{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "registry_cache_ms": 5000
      },
      "seconds": 2.276085615158081,
      "total_seconds": 3.004690170288086,
      "stats": {
        "pings_per_sec": 439.3551563400199
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:47:08 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:08 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:08 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:08 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:08 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:08 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:08 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:47:08 remove worker.pid",
        "2021/02/23 21:47:08 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "registry_cache_ms": 5000
      },
      "seconds": 13.250785827636719,
      "total_seconds": 13.492965698242188,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 440,
        "Create()/acquire-cgroup.cnt": 10,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 10,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 10,
        "Create()/fresh-proc.ms-avg": 438,
        "Create()/make-root-fs.cnt": 10,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 10,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 10,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 10,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 3270,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 162,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 6,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1475,
        "web-request.cnt": 4,
        "web-request.ms-avg": 3270
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:47:21 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:21 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:21 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:21 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:21 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:21 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:21 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:47:21 remove worker.pid",
        "2021/02/23 21:47:21 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 6.0612218379974365,
      "total_seconds": 6.301476955413818,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 93,
        "Create()/acquire-cgroup.cnt": 11,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 11,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 4,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 11,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 11,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 11,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 1507,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 44,
        "Unpause().cnt": 3,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 4,
        "childExit().ms-avg": 0,
        "fork().cnt": 4,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 4,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 28,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 4,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 940,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1507
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:47:28 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:28 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:28 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:28 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:28 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:28 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:28 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:47:28 remove worker.pid",
        "2021/02/23 21:47:28 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "sandbox": "docker",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "registry_cache_ms": 5000
      },
      "seconds": 26.238487243652344,
      "total_seconds": 28.56711220741272,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 1569,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 593,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 6548,
        "Pause().cnt": 4,
        "Pause().ms-avg": 30,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2288,
        "web-request.cnt": 4,
        "web-request.ms-avg": 6548
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:47:55 Kill function: install",
        "2021/02/23 21:47:55 Destroy() [SB 6]",
        "2021/02/23 21:47:56 Kill function: install2",
        "2021/02/23 21:47:56 Destroy() [SB 7]",
        "2021/02/23 21:47:56 Kill function: install3",
        "2021/02/23 21:47:56 Destroy() [SB 9]",
        "2021/02/23 21:47:56 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:47:56 remove worker.pid",
        "2021/02/23 21:47:56 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 0.18254852294921875,
      "total_seconds": 0.41402745246887207,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 77,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 178,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 11,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 2,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 5,
        "web-request.cnt": 1,
        "web-request.ms-avg": 178
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:47:57 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:57 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:57 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:57 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:57 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:57 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:57 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:47:57 remove worker.pid",
        "2021/02/23 21:47:57 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 0.8463819026947021,
      "total_seconds": 1.078789472579956,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 76,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 4,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 842,
        "Pause().cnt": 2,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 677,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 4,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 842
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:47:58 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:58 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:58 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:58 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:58 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:58 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:47:58 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:47:58 remove worker.pid",
        "2021/02/23 21:47:58 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 53.92440724372864,
      "total_seconds": 54.24130296707153,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 13,
        "Channel().ms-avg": 0,
        "Create().cnt": 14,
        "Create().ms-avg": 108,
        "Create()/acquire-cgroup.cnt": 14,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 14,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 5,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 9,
        "Create()/fresh-proc.ms-avg": 161,
        "Create()/make-root-fs.cnt": 14,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 14,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 14,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 14,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 14,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 10781,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 805,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 31,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 5,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 5,
        "pull-lambda.ms-avg": 7,
        "pull-package.cnt": 8,
        "pull-package.ms-avg": 6202,
        "web-request.cnt": 5,
        "web-request.ms-avg": 10781
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:48:52 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:52 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:52 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:52 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:52 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:52 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:52 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:48:52 remove worker.pid",
        "2021/02/23 21:48:52 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 1,
        "baseline": 0,
        "fork": false,
        "seconds": 5
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "sock",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 5.233536720275879,
      "total_seconds": 5.457989454269409,
      "stats": {
        "sandboxes_per_sec": 6.2
      },
      "ol-stats": {
        "Create().cnt": 31,
        "Create().ms-avg": 143,
        "Create()/acquire-cgroup.cnt": 31,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 31,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 31,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 31,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 62,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 31,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 31,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 31,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 48,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:48:57 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:57 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:57 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:57 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:57 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:57 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:48:57 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:48:57 remove worker.pid",
        "2021/02/23 21:48:57 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 1,
        "baseline": 0,
        "fork": true,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "sock",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 10.248587369918823,
      "total_seconds": 10.488648176193237,
      "stats": {
        "sandboxes_per_sec": 41.4
      },
      "ol-stats": {
        "Create().cnt": 415,
        "Create().ms-avg": 11,
        "Create()/acquire-cgroup.cnt": 415,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 415,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 414,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 132,
        "Create()/make-root-fs.cnt": 415,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 829,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 415,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 415,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 415,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 414,
        "childExit().ms-avg": 0,
        "fork().cnt": 414,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 414,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 432,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 414,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:49:08 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:08 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:08 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:08 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:08 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:08 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:08 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:49:08 remove worker.pid",
        "2021/02/23 21:49:08 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 15,
        "baseline": 0,
        "fork": true,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "sock",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 10.362344741821289,
      "total_seconds": 10.59089970588684,
      "stats": {
        "sandboxes_per_sec": 46.1
      },
      "ol-stats": {
        "Create().cnt": 462,
        "Create().ms-avg": 84,
        "Create()/acquire-cgroup.cnt": 462,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 462,
        "Create()/acquire-mem.ms-avg": 21,
        "Create()/fork-proc.cnt": 461,
        "Create()/fork-proc.ms-avg": 60,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 462,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 923,
        "Destroy().ms-avg": 47,
        "Destroy()/detach-root.cnt": 462,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 462,
        "Destroy()/kill-procs.ms-avg": 11,
        "Destroy()/remove-root.cnt": 462,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 461,
        "childExit().ms-avg": 58,
        "fork().cnt": 461,
        "fork().ms-avg": 60,
        "forkRequest.cnt": 461,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 479,
        "fresh-cgroup.ms-avg": 4,
        "move-to-cg-after-fork.cnt": 461,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:49:19 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:19 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:19 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:19 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:19 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:19 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:19 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:49:19 remove worker.pid",
        "2021/02/23 21:49:19 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 1,
        "baseline": 32,
        "fork": true,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "sock",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 11.78996467590332,
      "total_seconds": 12.121398687362671,
      "stats": {
        "sandboxes_per_sec": 43.9
      },
      "ol-stats": {
        "Create().cnt": 472,
        "Create().ms-avg": 9,
        "Create()/acquire-cgroup.cnt": 472,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 472,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 471,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 472,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 911,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 472,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 472,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 472,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 471,
        "childExit().ms-avg": 0,
        "fork().cnt": 471,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 471,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 489,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 471,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:49:31 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:31 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:31 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:31 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:31 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:31 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:31 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:49:31 remove worker.pid",
        "2021/02/23 21:49:31 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 15,
        "baseline": 32,
        "fork": true,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "sock",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 11.082066535949707,
      "total_seconds": 11.428076982498169,
      "stats": {
        "sandboxes_per_sec": 41.4
      },
      "ol-stats": {
        "Create().cnt": 447,
        "Create().ms-avg": 132,
        "Create()/acquire-cgroup.cnt": 447,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 447,
        "Create()/acquire-mem.ms-avg": 78,
        "Create()/fork-proc.cnt": 446,
        "Create()/fork-proc.ms-avg": 50,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 142,
        "Create()/make-root-fs.cnt": 447,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 861,
        "Destroy().ms-avg": 48,
        "Destroy()/detach-root.cnt": 447,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 447,
        "Destroy()/kill-procs.ms-avg": 10,
        "Destroy()/remove-root.cnt": 447,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 446,
        "childExit().ms-avg": 55,
        "fork().cnt": 446,
        "fork().ms-avg": 50,
        "forkRequest.cnt": 446,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 464,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 446,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:49:42 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:42 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:42 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:42 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:42 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:42 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:42 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:49:42 remove worker.pid",
        "2021/02/23 21:49:42 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/tmp/tmp8z_0q9uj",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "registry_cache_ms": 3000
      },
      "seconds": 6.027288913726807,
      "total_seconds": 6.27295446395874,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 47,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 157,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1723,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1726,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1723,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1722,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1723,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:49:48 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:48 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:48 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:48 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:48 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:48 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:49:48 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:49:48 remove worker.pid",
        "2021/02/23 21:49:48 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 1,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 15.04398775100708,
      "total_seconds": 15.273581743240356,
      "stats": {
        "reqs_per_sec": 287.8
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4317,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4320,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4317,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4316,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 1,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4317,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:50:04 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:04 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:04 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:04 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:04 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:04 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:04 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:50:04 remove worker.pid",
        "2021/02/23 21:50:04 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 2,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 15.046607255935669,
      "total_seconds": 15.27639389038086,
      "stats": {
        "reqs_per_sec": 290.26666666666665
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 43,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 137,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4354,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3892,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4354,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3888,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 4354,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:50:19 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:19 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:19 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:19 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:19 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:19 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:19 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:50:19 remove worker.pid",
        "2021/02/23 21:50:19 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 8,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 15.063932418823242,
      "total_seconds": 15.294093132019043,
      "stats": {
        "reqs_per_sec": 259.26666666666665
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 43,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 137,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 3889,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2957,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3889,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2953,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 5,
        "web-request.cnt": 3889,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:50:34 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:34 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:34 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:34 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:34 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:34 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:34 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:50:34 remove worker.pid",
        "2021/02/23 21:50:34 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/tmp/tmpk9oy0yc7",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_port": "5000",
        "import_cache_tree": "",
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "registry_cache_ms": 5000
      },
      "seconds": 2.813628673553467,
      "total_seconds": 3.274317979812622,
      "stats": {
        "reqs_per_sec": 35.541629925747614
      },
      "ol-stats": {
        "Channel().cnt": 100,
        "Channel().ms-avg": 0,
        "Create().cnt": 101,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 101,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 101,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 100,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 157,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 101,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 101,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 101,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 100,
        "LambdaFunc.Invoke.ms-avg": 24,
        "Pause().cnt": 200,
        "Pause().ms-avg": 8,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 5,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 3,
        "evict.cnt": 56,
        "evict.ms-avg": 10,
        "fork().cnt": 100,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 69,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 100,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 100,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 100,
        "web-request.ms-avg": 24
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:50:37 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:37 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:37 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:37 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:37 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:37 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:50:38 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:50:38 remove worker.pid",
        "2021/02/23 21:50:38 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "registry": "/tmp/tmpexgf715g",
        "pip_mirror": "",
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "worker_port": "5000",
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "docker_runtime": "",
        "registry_cache_ms": 5000
      },
      "seconds": 43.96156573295593,
      "total_seconds": 44.51164245605469,
      "stats": {
        "reqs_per_sec": 22.747159025289694
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 1001,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 1001,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1000,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 179,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 1980,
        "Destroy().ms-avg": 5,
        "Destroy()/detach-root.cnt": 1001,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 1001,
        "Destroy()/kill-procs.ms-avg": 7,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 39,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 8,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 19,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 3,
        "evict.cnt": 979,
        "evict.ms-avg": 10,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 41,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1000,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1000,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 40
      },
      "errors": [],
      "worker_tail": [
        "2021/02/23 21:51:22 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:51:22 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:51:22 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:51:22 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:51:22 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:51:22 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/23 21:51:22 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/23 21:51:22 remove worker.pid",
        "2021/02/23 21:51:22 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
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