{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000"
      },
      "seconds": 2.1424789428710938,
      "total_seconds": 2.268296241760254,
      "stats": {
        "pings_per_sec": 466.75320004344474
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:46:54 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:46:54 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:46:54 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:46:54 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:46:54 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:46:54 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:46:54 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:46:54 remove worker.pid",
        "2020/06/26 21:46:54 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": false
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000"
      },
      "seconds": 12.464289426803589,
      "total_seconds": 12.718824863433838,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 280,
        "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": 272,
        "Create()/make-root-fs.cnt": 10,
        "Create()/make-root-fs.ms-avg": 7,
        "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": 3103,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 112,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 43,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1641,
        "web-request.cnt": 4,
        "web-request.ms-avg": 3103
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:47:06 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:06 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:06 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:06 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:06 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:06 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:06 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:47:06 remove worker.pid",
        "2020/06/26 21:47:06 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 6.295661449432373,
      "total_seconds": 6.533843040466309,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 94,
        "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": 7,
        "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": 0,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 1566,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 42,
        "Unpause().cnt": 3,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 4,
        "childExit().ms-avg": 0,
        "fork().cnt": 4,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 4,
        "forkRequest.ms-avg": 6,
        "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": 980,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1566
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:47:13 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:13 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:13 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:13 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:13 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:13 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:13 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:47:13 remove worker.pid",
        "2020/06/26 21:47:13 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "docker",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": false
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000"
      },
      "seconds": 29.615939140319824,
      "total_seconds": 30.642055988311768,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 1271,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 487,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 7393,
        "Pause().cnt": 4,
        "Pause().ms-avg": 252,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 3606,
        "web-request.cnt": 4,
        "web-request.ms-avg": 7393
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:47:43 Kill function: install3",
        "2020/06/26 21:47:43 Destroy() [SB 9]",
        "2020/06/26 21:47:43 Kill function: echo",
        "2020/06/26 21:47:43 Destroy() [SB 0]",
        "2020/06/26 21:47:43 Kill function: install",
        "2020/06/26 21:47:43 Destroy() [SB 6]",
        "2020/06/26 21:47:44 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:47:44 remove worker.pid",
        "2020/06/26 21:47:44 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 0.1739211082458496,
      "total_seconds": 0.40628910064697266,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 72,
        "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": 137,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 2,
        "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": 170,
        "Pause().cnt": 2,
        "Pause().ms-avg": 6,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 11,
        "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": 170
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:47:44 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:44 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:44 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:44 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:44 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:44 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:44 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:47:44 remove worker.pid",
        "2020/06/26 21:47:44 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 0.8367471694946289,
      "total_seconds": 1.0716922283172607,
      "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": 8,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "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": 832,
        "Pause().cnt": 2,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 672,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 8,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 833
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:47:45 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:45 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:45 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:45 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:45 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:45 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:47:45 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:47:45 remove worker.pid",
        "2020/06/26 21:47:45 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 96.13458895683289,
      "total_seconds": 96.40045070648193,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 183,
        "Create()/acquire-cgroup.cnt": 13,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 13,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 5,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 8,
        "Create()/fresh-proc.ms-avg": 164,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 79,
        "Destroy().cnt": 13,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 13,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 13,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 13,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 19223,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 467,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 30,
        "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": 7,
        "pull-package.ms-avg": 13219,
        "web-request.cnt": 5,
        "web-request.ms-avg": 19223
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:49:22 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:22 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:22 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:22 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:22 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:22 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:22 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:49:22 remove worker.pid",
        "2020/06/26 21:49:22 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "procs": 1,
        "seconds": 5,
        "fork": false
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 5.08510947227478,
      "total_seconds": 5.307127952575684,
      "stats": {
        "sandboxes_per_sec": 6.4
      },
      "ol-stats": {
        "Create().cnt": 32,
        "Create().ms-avg": 141,
        "Create()/acquire-cgroup.cnt": 32,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 32,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 32,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 32,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 64,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 32,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 32,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 32,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 49,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:49:27 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:27 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:27 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:27 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:27 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:27 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:27 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:49:27 remove worker.pid",
        "2020/06/26 21:49:27 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "procs": 1,
        "seconds": 10,
        "fork": true
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 10.25313663482666,
      "total_seconds": 10.487062692642212,
      "stats": {
        "sandboxes_per_sec": 43.8
      },
      "ol-stats": {
        "Create().cnt": 439,
        "Create().ms-avg": 11,
        "Create()/acquire-cgroup.cnt": 439,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 439,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 438,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 132,
        "Create()/make-root-fs.cnt": 439,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 877,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 439,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 439,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 439,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 438,
        "childExit().ms-avg": 0,
        "fork().cnt": 438,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 438,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 456,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 438,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:49:37 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:37 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:37 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:37 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:37 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:37 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:37 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:49:37 remove worker.pid",
        "2020/06/26 21:49:37 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "procs": 15,
        "seconds": 10,
        "fork": true
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 10.449016809463501,
      "total_seconds": 10.696501731872559,
      "stats": {
        "sandboxes_per_sec": 47.2
      },
      "ol-stats": {
        "Create().cnt": 473,
        "Create().ms-avg": 72,
        "Create()/acquire-cgroup.cnt": 473,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 473,
        "Create()/acquire-mem.ms-avg": 16,
        "Create()/fork-proc.cnt": 472,
        "Create()/fork-proc.ms-avg": 52,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 133,
        "Create()/make-root-fs.cnt": 473,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 945,
        "Destroy().ms-avg": 46,
        "Destroy()/detach-root.cnt": 473,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 473,
        "Destroy()/kill-procs.ms-avg": 12,
        "Destroy()/remove-root.cnt": 473,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 472,
        "childExit().ms-avg": 51,
        "fork().cnt": 472,
        "fork().ms-avg": 52,
        "forkRequest.cnt": 472,
        "forkRequest.ms-avg": 9,
        "fresh-cgroup.cnt": 490,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 472,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:49:48 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:48 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:48 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:48 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:48 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:48 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:48 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:49:48 remove worker.pid",
        "2020/06/26 21:49:48 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "procs": 1,
        "seconds": 10,
        "fork": true
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 10.785258054733276,
      "total_seconds": 11.12496829032898,
      "stats": {
        "sandboxes_per_sec": 44.7
      },
      "ol-stats": {
        "Create().cnt": 480,
        "Create().ms-avg": 6,
        "Create()/acquire-cgroup.cnt": 480,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 480,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 479,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 135,
        "Create()/make-root-fs.cnt": 480,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 927,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 480,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 480,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 480,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 479,
        "childExit().ms-avg": 0,
        "fork().cnt": 479,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 479,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 497,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 479,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:49:59 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:59 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:59 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:59 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:59 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:59 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:49:59 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:49:59 remove worker.pid",
        "2020/06/26 21:49:59 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "procs": 15,
        "seconds": 10,
        "fork": true
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 11.05574917793274,
      "total_seconds": 12.124079704284668,
      "stats": {
        "sandboxes_per_sec": 42.0
      },
      "ol-stats": {
        "Create().cnt": 453,
        "Create().ms-avg": 126,
        "Create()/acquire-cgroup.cnt": 453,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 453,
        "Create()/acquire-mem.ms-avg": 73,
        "Create()/fork-proc.cnt": 452,
        "Create()/fork-proc.ms-avg": 49,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 134,
        "Create()/make-root-fs.cnt": 453,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 873,
        "Destroy().ms-avg": 48,
        "Destroy()/detach-root.cnt": 453,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 453,
        "Destroy()/kill-procs.ms-avg": 13,
        "Destroy()/remove-root.cnt": 453,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 452,
        "childExit().ms-avg": 54,
        "fork().cnt": 452,
        "fork().ms-avg": 49,
        "forkRequest.cnt": 452,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 470,
        "fresh-cgroup.ms-avg": 5,
        "move-to-cg-after-fork.cnt": 452,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:50:11 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:11 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:11 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:11 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:11 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:11 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:11 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:50:11 remove worker.pid",
        "2020/06/26 21:50:11 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "registry": "/tmp/tmpjz9y_3tu",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 3000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000"
      },
      "seconds": 6.034221649169922,
      "total_seconds": 6.287180185317993,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 60,
        "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": 206,
        "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": 1689,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1692,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1689,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1688,
        "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": 1,
        "web-request.cnt": 1689,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:50:18 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:18 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:18 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:18 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:18 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:18 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:18 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:50:18 remove worker.pid",
        "2020/06/26 21:50:18 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 1,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 15.039310693740845,
      "total_seconds": 15.267751455307007,
      "stats": {
        "reqs_per_sec": 291.26666666666665
      },
      "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": 133,
        "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": 4369,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4372,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4369,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4368,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 5,
        "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": 4369,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:50:33 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:33 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:33 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:33 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:33 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:33 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:33 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:50:33 remove worker.pid",
        "2020/06/26 21:50:33 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 2,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 15.049165487289429,
      "total_seconds": 15.279173135757446,
      "stats": {
        "reqs_per_sec": 282.06666666666666
      },
      "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": 6,
        "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": 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": 4231,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3785,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4231,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3781,
        "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": 1,
        "web-request.cnt": 4231,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:50:48 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:48 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:48 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:48 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:48 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:48 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:50:48 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:50:48 remove worker.pid",
        "2020/06/26 21:50:48 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 8,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 15.064540147781372,
      "total_seconds": 15.295339107513428,
      "stats": {
        "reqs_per_sec": 261.2
      },
      "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": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 3918,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2974,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3918,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2970,
        "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": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 3918,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:51:03 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:03 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:03 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:03 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:03 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:03 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:03 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:51:03 remove worker.pid",
        "2020/06/26 21:51:03 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": true,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "mem_pool_mb": 500,
        "registry": "/tmp/tmpfzun3qyy",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000"
      },
      "seconds": 2.733278274536133,
      "total_seconds": 3.1743597984313965,
      "stats": {
        "reqs_per_sec": 36.58642196072958
      },
      "ol-stats": {
        "Channel().cnt": 100,
        "Channel().ms-avg": 0,
        "Create().cnt": 101,
        "Create().ms-avg": 6,
        "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": 136,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 156,
        "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": 23,
        "Pause().cnt": 200,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 5,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 2,
        "evict.cnt": 55,
        "evict.ms-avg": 9,
        "fork().cnt": 100,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 67,
        "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": 3,
        "web-request.cnt": 100,
        "web-request.ms-avg": 23
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:51:07 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:07 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:07 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:07 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:07 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:07 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:07 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:51:07 remove worker.pid",
        "2020/06/26 21:51:07 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "sandbox_config": {},
        "sandbox": "sock",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "storage": {
          "scratch": "",
          "root": "private",
          "code": ""
        },
        "features": {
          "reuse_cgroups": true,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "import_cache_tree": "",
        "pip_mirror": "",
        "worker_port": "5000",
        "registry": "/tmp/tmpae7lr_7k",
        "docker_runtime": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500
      },
      "seconds": 42.75219202041626,
      "total_seconds": 43.70994472503662,
      "stats": {
        "reqs_per_sec": 23.390628896412856
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 8,
        "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": 135,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 1982,
        "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": 38,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 8,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 18,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 2,
        "evict.cnt": 981,
        "evict.ms-avg": 10,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 40,
        "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": 2,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 38
      },
      "errors": [],
      "worker_tail": [
        "2020/06/26 21:51:50 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:50 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:50 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:50 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:50 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:50 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/06/26 21:51:50 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/06/26 21:51:50 remove worker.pid",
        "2020/06/26 21:51:50 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 387.94344782829285
}