{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "evictor": false,
          "package": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 2.169708490371704,
      "total_seconds": 2.515606641769409,
      "stats": {
        "pings_per_sec": 460.8959149604278
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:45:42 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:42 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:42 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:42 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:42 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:42 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:42 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:45:42 remove worker.pid",
        "2020/01/20 21:45:42 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "evictor": false,
          "package": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 10.287331104278564,
      "total_seconds": 10.526546239852905,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 359,
        "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": 357,
        "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": 2555,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 51,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 8,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1213,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2555
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:45:52 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:52 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:52 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:52 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:52 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:52 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:52 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:45:52 remove worker.pid",
        "2020/01/20 21:45:52 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 6.254261016845703,
      "total_seconds": 6.491096496582031,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 103,
        "Create()/acquire-cgroup.cnt": 11,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 11,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 4,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 11,
        "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": 1555,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 44,
        "Unpause().cnt": 3,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 4,
        "childExit().ms-avg": 0,
        "fork().cnt": 4,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 4,
        "forkRequest.ms-avg": 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": 954,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1555
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:45:59 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:59 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:59 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:59 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:59 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:59 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:45:59 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:45:59 remove worker.pid",
        "2020/01/20 21:45:59 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "evictor": false,
          "package": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "docker",
        "mem_pool_mb": 500,
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 24.71176028251648,
      "total_seconds": 25.73520255088806,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 1091,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 295,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 6166,
        "Pause().cnt": 4,
        "Pause().ms-avg": 111,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2943,
        "web-request.cnt": 4,
        "web-request.ms-avg": 6166
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:46:24 Kill function: install",
        "2020/01/20 21:46:24 Destroy() [SB 6]",
        "2020/01/20 21:46:24 Kill function: install2",
        "2020/01/20 21:46:24 Destroy() [SB 7]",
        "2020/01/20 21:46:24 Kill function: install3",
        "2020/01/20 21:46:24 Destroy() [SB 9]",
        "2020/01/20 21:46:24 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:46:24 remove worker.pid",
        "2020/01/20 21:46:24 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 0.17693567276000977,
      "total_seconds": 0.4074211120605469,
      "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": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 173,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 11,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 6,
        "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": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 173
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:46:25 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:25 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:25 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:25 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:25 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:25 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:25 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:46:25 remove worker.pid",
        "2020/01/20 21:46:25 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 0.8389921188354492,
      "total_seconds": 1.071214199066162,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 74,
        "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": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 134,
        "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": 835,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 674,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 3,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 2,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 5,
        "web-request.cnt": 1,
        "web-request.ms-avg": 835
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:46:26 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:26 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:26 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:26 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:26 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:26 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:46:26 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:46:26 remove worker.pid",
        "2020/01/20 21:46:26 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 58.80282711982727,
      "total_seconds": 59.046788930892944,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 173,
        "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": 261,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 10,
        "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": 11756,
        "Pause().cnt": 10,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 378,
        "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": 4,
        "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": 13,
        "pull-package.cnt": 7,
        "pull-package.ms-avg": 8059,
        "web-request.cnt": 5,
        "web-request.ms-avg": 11756
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:47:25 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:25 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:25 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:25 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:25 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:25 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:25 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:47:25 remove worker.pid",
        "2020/01/20 21:47:25 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": false,
        "baseline": 0,
        "procs": 1,
        "seconds": 5
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-dir/registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "sock",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 5.215667247772217,
      "total_seconds": 5.3380818367004395,
      "stats": {
        "sandboxes_per_sec": 6.2
      },
      "ol-stats": {
        "Create().cnt": 31,
        "Create().ms-avg": 149,
        "Create()/acquire-cgroup.cnt": 31,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 31,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 31,
        "Create()/fresh-proc.ms-avg": 144,
        "Create()/make-root-fs.cnt": 31,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 62,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 31,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 31,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 31,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 48,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:47:30 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:30 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:30 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:30 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:30 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:30 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:30 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:47:30 remove worker.pid",
        "2020/01/20 21:47:30 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "baseline": 0,
        "procs": 1,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-dir/registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "sock",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 10.160105466842651,
      "total_seconds": 10.395135402679443,
      "stats": {
        "sandboxes_per_sec": 45.1
      },
      "ol-stats": {
        "Create().cnt": 452,
        "Create().ms-avg": 10,
        "Create()/acquire-cgroup.cnt": 452,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 452,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 451,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 132,
        "Create()/make-root-fs.cnt": 452,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 903,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 452,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 452,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 452,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 451,
        "childExit().ms-avg": 0,
        "fork().cnt": 451,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 451,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 469,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 451,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:47:41 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:41 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:41 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:41 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:41 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:41 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:41 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:47:41 remove worker.pid",
        "2020/01/20 21:47:41 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "baseline": 0,
        "procs": 15,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-dir/registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "sock",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 10.418002843856812,
      "total_seconds": 10.654184341430664,
      "stats": {
        "sandboxes_per_sec": 45.7
      },
      "ol-stats": {
        "Create().cnt": 458,
        "Create().ms-avg": 75,
        "Create()/acquire-cgroup.cnt": 458,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 458,
        "Create()/acquire-mem.ms-avg": 16,
        "Create()/fork-proc.cnt": 457,
        "Create()/fork-proc.ms-avg": 56,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 133,
        "Create()/make-root-fs.cnt": 458,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 915,
        "Destroy().ms-avg": 42,
        "Destroy()/detach-root.cnt": 458,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 458,
        "Destroy()/kill-procs.ms-avg": 9,
        "Destroy()/remove-root.cnt": 458,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 457,
        "childExit().ms-avg": 50,
        "fork().cnt": 457,
        "fork().ms-avg": 56,
        "forkRequest.cnt": 457,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 475,
        "fresh-cgroup.ms-avg": 5,
        "move-to-cg-after-fork.cnt": 457,
        "move-to-cg-after-fork.ms-avg": 3
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:47:51 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:51 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:51 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:51 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:51 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:51 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:47:51 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:47:51 remove worker.pid",
        "2020/01/20 21:47:51 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "baseline": 32,
        "procs": 1,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-dir/registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "sock",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 10.797977685928345,
      "total_seconds": 11.47358512878418,
      "stats": {
        "sandboxes_per_sec": 45.2
      },
      "ol-stats": {
        "Create().cnt": 485,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 485,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 485,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 484,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 485,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 937,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 485,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 485,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 485,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 484,
        "childExit().ms-avg": 0,
        "fork().cnt": 484,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 484,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 502,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 484,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:48:03 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:03 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:03 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:03 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:03 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:03 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:03 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:48:03 remove worker.pid",
        "2020/01/20 21:48:03 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "baseline": 32,
        "procs": 15,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-dir/registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "sock",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 11.01494026184082,
      "total_seconds": 11.493772268295288,
      "stats": {
        "sandboxes_per_sec": 40.7
      },
      "ol-stats": {
        "Create().cnt": 440,
        "Create().ms-avg": 127,
        "Create()/acquire-cgroup.cnt": 440,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 440,
        "Create()/acquire-mem.ms-avg": 72,
        "Create()/fork-proc.cnt": 439,
        "Create()/fork-proc.ms-avg": 51,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 154,
        "Create()/make-root-fs.cnt": 440,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 847,
        "Destroy().ms-avg": 45,
        "Destroy()/detach-root.cnt": 440,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 440,
        "Destroy()/kill-procs.ms-avg": 10,
        "Destroy()/remove-root.cnt": 440,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 439,
        "childExit().ms-avg": 52,
        "fork().cnt": 439,
        "fork().ms-avg": 51,
        "forkRequest.cnt": 439,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 457,
        "fresh-cgroup.ms-avg": 4,
        "move-to-cg-after-fork.cnt": 439,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:48:14 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:14 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:14 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:14 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:14 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:14 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:14 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:48:14 remove worker.pid",
        "2020/01/20 21:48:14 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "evictor": false,
          "package": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 3000,
        "registry": "/tmp/tmpz1tomlry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 6.034993886947632,
      "total_seconds": 6.276993989944458,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 51,
        "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": 175,
        "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": 1692,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1695,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1692,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1691,
        "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": 3,
        "web-request.cnt": 1692,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:48:21 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:21 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:21 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:21 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:21 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:21 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:21 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:48:21 remove worker.pid",
        "2020/01/20 21:48:21 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 1,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 15.039911985397339,
      "total_seconds": 15.271251678466797,
      "stats": {
        "reqs_per_sec": 287.0
      },
      "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": 138,
        "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": 4305,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4308,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4305,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4304,
        "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": 1,
        "web-request.cnt": 4305,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:48:36 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:36 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:36 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:36 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:36 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:36 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:36 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:48:36 remove worker.pid",
        "2020/01/20 21:48:36 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 2,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 15.050014019012451,
      "total_seconds": 15.281826257705688,
      "stats": {
        "reqs_per_sec": 290.8
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 4,
        "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": 4362,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3903,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4362,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3899,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 6,
        "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": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 4362,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:48:51 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:51 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:51 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:51 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:51 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:51 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:48:51 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:48:51 remove worker.pid",
        "2020/01/20 21:48:51 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 8,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/root/open-lambda/test-registry",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 15.061589479446411,
      "total_seconds": 15.295516729354858,
      "stats": {
        "reqs_per_sec": 260.6666666666667
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 3910,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 3027,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3910,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3023,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 1,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 7,
        "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": 3910,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:49:06 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:06 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:06 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:06 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:06 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:06 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:06 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:49:06 remove worker.pid",
        "2020/01/20 21:49:06 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 1,
        "lambda_count": 100
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "evictor": false,
          "package": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/tmp/tmpxxsz9m9x",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 2.8882791996002197,
      "total_seconds": 3.4847424030303955,
      "stats": {
        "reqs_per_sec": 34.62299169834845
      },
      "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": 140,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 157,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 101,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 101,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 101,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 100,
        "LambdaFunc.Invoke.ms-avg": 24,
        "Pause().cnt": 200,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 6,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 3,
        "evict.cnt": 56,
        "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": [
        "2020/01/20 21:49:10 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:10 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:10 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:10 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:10 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:10 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:10 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:49:10 remove worker.pid",
        "2020/01/20 21:49:10 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 10,
        "lambda_count": 1000
      },
      "pass": true,
      "conf": {
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "cgroups": false,
          "package": false,
          "evictor": false
        },
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "registry_cache_ms": 5000,
        "registry": "/tmp/tmptouhlyxc",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "worker_port": "5000",
        "pip_mirror": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": "",
        "docker_runtime": "",
        "server_mode": "lambda",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        }
      },
      "seconds": 45.53394389152527,
      "total_seconds": 46.069098711013794,
      "stats": {
        "reqs_per_sec": 21.961652999678915
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 1001,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 1001,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1000,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 1980,
        "Destroy().ms-avg": 5,
        "Destroy()/detach-root.cnt": 1001,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 1001,
        "Destroy()/kill-procs.ms-avg": 7,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 41,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 8,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 19,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 3,
        "evict.cnt": 979,
        "evict.ms-avg": 11,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 41,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1000,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1000,
        "pull-lambda.ms-avg": 5,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 41
      },
      "errors": [],
      "worker_tail": [
        "2020/01/20 21:49:56 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:56 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:56 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:56 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:56 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:56 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/01/20 21:49:56 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/01/20 21:49:56 remove worker.pid",
        "2020/01/20 21:49:56 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 353.28007340431213
}