{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0
        },
        "sandbox": "sock",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 2.2841835021972656,
      "total_seconds": 2.784980297088623,
      "stats": {
        "pings_per_sec": 437.79735626721407
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:46:39 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:39 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:39 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:39 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:39 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:39 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:39 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:46:39 remove worker.pid",
        "2021/02/22 21:46:39 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0
        },
        "sandbox": "sock",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 15.138740539550781,
      "total_seconds": 15.377798318862915,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 680,
        "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": 678,
        "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": 3760,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 180,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 34,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1372,
        "web-request.cnt": 4,
        "web-request.ms-avg": 3760
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:46:54 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:54 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:54 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:54 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:54 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:54 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:46:54 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:46:54 remove worker.pid",
        "2021/02/22 21:46:54 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 6.2793052196502686,
      "total_seconds": 6.516709327697754,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 95,
        "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": 142,
        "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": 1562,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 45,
        "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": 975,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1562
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:47:01 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:01 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:01 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:01 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:01 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:01 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:01 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:47:01 remove worker.pid",
        "2021/02/22 21:47:01 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0
        },
        "sandbox": "docker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 25.420514822006226,
      "total_seconds": 27.14686918258667,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 1396,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 428,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 6344,
        "Pause().cnt": 4,
        "Pause().ms-avg": 97,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 2,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2644,
        "web-request.cnt": 4,
        "web-request.ms-avg": 6344
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:47:27 Kill function: install",
        "2021/02/22 21:47:27 Destroy() [SB 6]",
        "2021/02/22 21:47:27 Kill function: install2",
        "2021/02/22 21:47:27 Destroy() [SB 7]",
        "2021/02/22 21:47:27 Kill function: install3",
        "2021/02/22 21:47:27 Destroy() [SB 9]",
        "2021/02/22 21:47:28 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:47:28 remove worker.pid",
        "2021/02/22 21:47:28 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 0.18642067909240723,
      "total_seconds": 0.41779446601867676,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 79,
        "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": 145,
        "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": 182,
        "Pause().cnt": 2,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 12,
        "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": 182
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:47:28 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:28 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:28 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:28 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:28 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:28 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:28 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:47:28 remove worker.pid",
        "2021/02/22 21:47:28 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 0.874220609664917,
      "total_seconds": 1.1083941459655762,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 80,
        "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": 146,
        "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": 870,
        "Pause().cnt": 2,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 666,
        "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": 35,
        "web-request.cnt": 1,
        "web-request.ms-avg": 870
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:47:29 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:29 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:29 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:29 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:29 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:29 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:47:29 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:47:29 remove worker.pid",
        "2021/02/22 21:47:29 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 50.57470631599426,
      "total_seconds": 50.85457515716553,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 13,
        "Channel().ms-avg": 0,
        "Create().cnt": 14,
        "Create().ms-avg": 141,
        "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": 6,
        "Create()/fresh-proc.cnt": 9,
        "Create()/fresh-proc.ms-avg": 186,
        "Create()/make-root-fs.cnt": 14,
        "Create()/make-root-fs.ms-avg": 18,
        "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": 2,
        "Destroy()/remove-root.cnt": 14,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 10111,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 449,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 5,
        "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": 2,
        "pull-package.cnt": 8,
        "pull-package.ms-avg": 6008,
        "web-request.cnt": 5,
        "web-request.ms-avg": 10111
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:48:20 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:20 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:20 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:20 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:20 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:20 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:20 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:48:20 remove worker.pid",
        "2021/02/22 21:48:20 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 5,
        "fork": false,
        "baseline": 0,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "sock",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 5.947897911071777,
      "total_seconds": 6.0712151527404785,
      "stats": {
        "sandboxes_per_sec": 5.0
      },
      "ol-stats": {
        "Create().cnt": 25,
        "Create().ms-avg": 212,
        "Create()/acquire-cgroup.cnt": 25,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 25,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 25,
        "Create()/fresh-proc.ms-avg": 145,
        "Create()/make-root-fs.cnt": 25,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 50,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 25,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 25,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 25,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 42,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:48:26 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:26 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:26 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:26 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:26 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:26 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:26 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:48:26 remove worker.pid",
        "2021/02/22 21:48:26 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "fork": true,
        "baseline": 0,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "sock",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 10.193492889404297,
      "total_seconds": 10.421273708343506,
      "stats": {
        "sandboxes_per_sec": 47.9
      },
      "ol-stats": {
        "Create().cnt": 480,
        "Create().ms-avg": 9,
        "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": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 480,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 959,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 480,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 480,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 480,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 479,
        "childExit().ms-avg": 0,
        "fork().cnt": 479,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 479,
        "forkRequest.ms-avg": 5,
        "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": [
        "2021/02/22 21:48:37 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:37 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:37 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:37 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:37 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:37 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:37 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:48:37 remove worker.pid",
        "2021/02/22 21:48:37 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "fork": true,
        "baseline": 0,
        "procs": 15
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "sock",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 10.360970497131348,
      "total_seconds": 10.597395896911621,
      "stats": {
        "sandboxes_per_sec": 46.5
      },
      "ol-stats": {
        "Create().cnt": 466,
        "Create().ms-avg": 77,
        "Create()/acquire-cgroup.cnt": 466,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 466,
        "Create()/acquire-mem.ms-avg": 13,
        "Create()/fork-proc.cnt": 465,
        "Create()/fork-proc.ms-avg": 58,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 466,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 931,
        "Destroy().ms-avg": 42,
        "Destroy()/detach-root.cnt": 466,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 466,
        "Destroy()/kill-procs.ms-avg": 10,
        "Destroy()/remove-root.cnt": 466,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 465,
        "childExit().ms-avg": 52,
        "fork().cnt": 465,
        "fork().ms-avg": 58,
        "forkRequest.cnt": 465,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 483,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 465,
        "move-to-cg-after-fork.ms-avg": 3
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:48:47 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:47 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:47 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:47 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:47 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:47 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:47 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:48:47 remove worker.pid",
        "2021/02/22 21:48:47 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "fork": true,
        "baseline": 32,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "sock",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 10.770736455917358,
      "total_seconds": 11.223198890686035,
      "stats": {
        "sandboxes_per_sec": 44.9
      },
      "ol-stats": {
        "Create().cnt": 482,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 482,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 482,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 481,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 134,
        "Create()/make-root-fs.cnt": 482,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 931,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 482,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 482,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 482,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 481,
        "childExit().ms-avg": 0,
        "fork().cnt": 481,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 481,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 499,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 481,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:48:58 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:58 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:58 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:58 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:58 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:58 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:48:58 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:48:58 remove worker.pid",
        "2021/02/22 21:48:58 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "fork": true,
        "baseline": 32,
        "procs": 15
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "sock",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 11.16818642616272,
      "total_seconds": 11.520152807235718,
      "stats": {
        "sandboxes_per_sec": 41.6
      },
      "ol-stats": {
        "Create().cnt": 449,
        "Create().ms-avg": 103,
        "Create()/acquire-cgroup.cnt": 449,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 449,
        "Create()/acquire-mem.ms-avg": 69,
        "Create()/fork-proc.cnt": 448,
        "Create()/fork-proc.ms-avg": 31,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 143,
        "Create()/make-root-fs.cnt": 449,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 865,
        "Destroy().ms-avg": 45,
        "Destroy()/detach-root.cnt": 449,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 449,
        "Destroy()/kill-procs.ms-avg": 10,
        "Destroy()/remove-root.cnt": 449,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 448,
        "childExit().ms-avg": 32,
        "fork().cnt": 448,
        "fork().ms-avg": 31,
        "forkRequest.cnt": 448,
        "forkRequest.ms-avg": 8,
        "fresh-cgroup.cnt": 466,
        "fresh-cgroup.ms-avg": 2,
        "move-to-cg-after-fork.cnt": 448,
        "move-to-cg-after-fork.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:49:10 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:10 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:10 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:10 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:10 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:10 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:10 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:49:10 remove worker.pid",
        "2021/02/22 21:49:10 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/tmp/tmp8iia4x65",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 3000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0
        },
        "sandbox": "sock",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 6.032191514968872,
      "total_seconds": 6.280471563339233,
      "stats": null,
      "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": 144,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 2,
        "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": 1610,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1613,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1610,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1609,
        "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": 38,
        "web-request.cnt": 1610,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:49:16 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:16 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:16 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:16 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:16 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:16 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:16 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:49:16 remove worker.pid",
        "2021/02/22 21:49:16 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 15.043226957321167,
      "total_seconds": 15.27589464187622,
      "stats": {
        "reqs_per_sec": 275.8666666666667
      },
      "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": 139,
        "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": 4138,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4141,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4138,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4137,
        "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": 4138,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:49:32 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:32 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:32 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:32 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:32 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:32 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:32 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:49:32 remove worker.pid",
        "2021/02/22 21:49:32 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 2
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 15.048742532730103,
      "total_seconds": 15.280636310577393,
      "stats": {
        "reqs_per_sec": 273.3333333333333
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 45,
        "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": 142,
        "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": 4100,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3736,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4100,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3732,
        "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": 4100,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:49:47 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:47 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:47 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:47 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:47 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:47 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:49:47 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:49:47 remove worker.pid",
        "2021/02/22 21:49:47 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 8
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 15.068039655685425,
      "total_seconds": 15.300208806991577,
      "stats": {
        "reqs_per_sec": 269.6
      },
      "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": 139,
        "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": 4044,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2949,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4044,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2945,
        "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": 4,
        "web-request.cnt": 4044,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:50:02 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:02 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:02 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:02 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:02 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:02 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:02 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:50:02 remove worker.pid",
        "2021/02/22 21:50:02 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 1,
        "lambda_count": 100
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/tmp/tmp8m55j9ml",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0
        },
        "sandbox": "sock",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 2.814065456390381,
      "total_seconds": 3.2758591175079346,
      "stats": {
        "reqs_per_sec": 35.5361133087756
      },
      "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": 138,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 159,
        "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": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 6,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 3,
        "evict.cnt": 58,
        "evict.ms-avg": 11,
        "fork().cnt": 100,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 70,
        "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": [
        "2021/02/22 21:50:05 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:05 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:05 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:05 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:05 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:05 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:05 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:50:05 remove worker.pid",
        "2021/02/22 21:50:05 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 10,
        "lambda_count": 1000
      },
      "pass": true,
      "conf": {
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/tmp/tmpz2nw03h9",
        "docker_runtime": "",
        "import_cache_tree": "",
        "server_mode": "lambda",
        "mem_pool_mb": 500,
        "trace": {
          "evictor": false,
          "package": false,
          "cgroups": false,
          "memory": false
        },
        "sandbox_config": {},
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "limits": {
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages"
      },
      "seconds": 44.499574422836304,
      "total_seconds": 45.03752064704895,
      "stats": {
        "reqs_per_sec": 22.472139834515456
      },
      "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": 138,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 1981,
        "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": 6,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 40,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 10,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 20,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 4,
        "evict.cnt": 980,
        "evict.ms-avg": 11,
        "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": 40
      },
      "errors": [],
      "worker_tail": [
        "2021/02/22 21:50:50 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:50 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:50 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:50 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:50 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:50 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/02/22 21:50:51 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/02/22 21:50:51 remove worker.pid",
        "2021/02/22 21:50:51 exiting",
        ""
      ]
    }
  ],
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