{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 2.4504783153533936,
      "total_seconds": 2.6210777759552,
      "stats": {
        "pings_per_sec": 408.0873270826099
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:47:38 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:38 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:38 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:38 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:38 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:38 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:38 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:47:38 remove worker.pid",
        "2021/03/21 21:47:38 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": false,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 16.38984179496765,
      "total_seconds": 16.62831163406372,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 673,
        "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": 671,
        "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": 4088,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 136,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 35,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1631,
        "web-request.cnt": 4,
        "web-request.ms-avg": 4088
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:47:55 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:55 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:55 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:55 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:55 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:55 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:47:55 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:47:55 remove worker.pid",
        "2021/03/21 21:47:55 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 9.125625848770142,
      "total_seconds": 9.364405870437622,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 94,
        "Create()/acquire-cgroup.cnt": 11,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 11,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 4,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 141,
        "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": 2273,
        "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": 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": 1380,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2273
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:48:04 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:04 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:04 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:04 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:04 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:04 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:04 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:48:04 remove worker.pid",
        "2021/03/21 21:48:04 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "docker",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": false,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 35.29097628593445,
      "total_seconds": 36.387858152389526,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 1682,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 445,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 8809,
        "Pause().cnt": 4,
        "Pause().ms-avg": 86,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 3872,
        "web-request.cnt": 4,
        "web-request.ms-avg": 8809
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:48:40 Kill function: install",
        "2021/03/21 21:48:40 Destroy() [SB 6]",
        "2021/03/21 21:48:40 Kill function: install2",
        "2021/03/21 21:48:40 Destroy() [SB 7]",
        "2021/03/21 21:48:40 Kill function: install3",
        "2021/03/21 21:48:40 Destroy() [SB 9]",
        "2021/03/21 21:48:41 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:48:41 remove worker.pid",
        "2021/03/21 21:48:41 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 3.52996826171875,
      "total_seconds": 3.762512445449829,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 1752,
        "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": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 3489,
        "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": 3526,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 13,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 3526
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:48:44 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:44 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:44 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:44 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:44 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:44 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:44 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:48:44 remove worker.pid",
        "2021/03/21 21:48:44 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 0.9188666343688965,
      "total_seconds": 1.1503195762634277,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 78,
        "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": 9,
        "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": 915,
        "Pause().cnt": 2,
        "Pause().ms-avg": 2,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 753,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 9,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 8,
        "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": 915
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:48:46 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:46 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:46 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:46 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:46 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:46 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:48:46 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:48:46 remove worker.pid",
        "2021/03/21 21:48:46 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 56.42782688140869,
      "total_seconds": 56.80691933631897,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 13,
        "Channel().ms-avg": 0,
        "Create().cnt": 14,
        "Create().ms-avg": 198,
        "Create()/acquire-cgroup.cnt": 14,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 14,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 5,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 9,
        "Create()/fresh-proc.ms-avg": 142,
        "Create()/make-root-fs.cnt": 14,
        "Create()/make-root-fs.ms-avg": 104,
        "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": 11281,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 857,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 7,
        "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": 19,
        "pull-package.cnt": 8,
        "pull-package.ms-avg": 6295,
        "web-request.cnt": 5,
        "web-request.ms-avg": 11281
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:49:42 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:42 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:42 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:42 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:42 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:42 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:42 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:49:42 remove worker.pid",
        "2021/03/21 21:49:42 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": false,
        "seconds": 5,
        "procs": 1,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 5.0734992027282715,
      "total_seconds": 5.195862054824829,
      "stats": {
        "sandboxes_per_sec": 0.2
      },
      "ol-stats": {
        "Create().cnt": 1,
        "Create().ms-avg": 4890,
        "Create()/acquire-cgroup.cnt": 1,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 1,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 4883,
        "Create()/make-root-fs.cnt": 1,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 1,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 1,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 1,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 18,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:49:48 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:48 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:48 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:48 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:48 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:48 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:48 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:49:48 remove worker.pid",
        "2021/03/21 21:49:48 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 1,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 10.246127605438232,
      "total_seconds": 10.86613917350769,
      "stats": {
        "sandboxes_per_sec": 45.7
      },
      "ol-stats": {
        "Create().cnt": 458,
        "Create().ms-avg": 10,
        "Create()/acquire-cgroup.cnt": 458,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 458,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 457,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 134,
        "Create()/make-root-fs.cnt": 458,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 915,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 458,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 458,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 458,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 457,
        "childExit().ms-avg": 0,
        "fork().cnt": 457,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 457,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 475,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 457,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:49:58 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:58 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:58 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:58 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:58 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:58 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:49:58 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:49:58 remove worker.pid",
        "2021/03/21 21:49:58 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 15,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 10.279551029205322,
      "total_seconds": 10.510306596755981,
      "stats": {
        "sandboxes_per_sec": 43.6
      },
      "ol-stats": {
        "Create().cnt": 437,
        "Create().ms-avg": 79,
        "Create()/acquire-cgroup.cnt": 437,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 437,
        "Create()/acquire-mem.ms-avg": 20,
        "Create()/fork-proc.cnt": 436,
        "Create()/fork-proc.ms-avg": 54,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 437,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 873,
        "Destroy().ms-avg": 57,
        "Destroy()/detach-root.cnt": 437,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 437,
        "Destroy()/kill-procs.ms-avg": 20,
        "Destroy()/remove-root.cnt": 437,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 436,
        "childExit().ms-avg": 53,
        "fork().cnt": 436,
        "fork().ms-avg": 54,
        "forkRequest.cnt": 436,
        "forkRequest.ms-avg": 9,
        "fresh-cgroup.cnt": 454,
        "fresh-cgroup.ms-avg": 2,
        "move-to-cg-after-fork.cnt": 436,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:50:09 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:09 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:09 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:09 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:09 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:09 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:09 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:50:09 remove worker.pid",
        "2021/03/21 21:50:09 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 1,
        "baseline": 32
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 10.85266923904419,
      "total_seconds": 11.248189210891724,
      "stats": {
        "sandboxes_per_sec": 43.5
      },
      "ol-stats": {
        "Create().cnt": 468,
        "Create().ms-avg": 6,
        "Create()/acquire-cgroup.cnt": 468,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 468,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 467,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 468,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 903,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 468,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 468,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 468,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 467,
        "childExit().ms-avg": 0,
        "fork().cnt": 467,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 467,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 485,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 467,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:50:20 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:20 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:20 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:20 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:20 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:20 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:20 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:50:20 remove worker.pid",
        "2021/03/21 21:50:20 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "seconds": 10,
        "procs": 15,
        "baseline": 32
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox": "sock",
        "server_mode": "sock",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 11.533469438552856,
      "total_seconds": 11.906150579452515,
      "stats": {
        "sandboxes_per_sec": 38.1
      },
      "ol-stats": {
        "Create().cnt": 414,
        "Create().ms-avg": 136,
        "Create()/acquire-cgroup.cnt": 414,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 414,
        "Create()/acquire-mem.ms-avg": 87,
        "Create()/fork-proc.cnt": 413,
        "Create()/fork-proc.ms-avg": 43,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 640,
        "Create()/make-root-fs.cnt": 414,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 795,
        "Destroy().ms-avg": 49,
        "Destroy()/detach-root.cnt": 414,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 414,
        "Destroy()/kill-procs.ms-avg": 11,
        "Destroy()/remove-root.cnt": 414,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 413,
        "childExit().ms-avg": 44,
        "fork().cnt": 413,
        "fork().ms-avg": 43,
        "forkRequest.cnt": 413,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 431,
        "fresh-cgroup.ms-avg": 7,
        "move-to-cg-after-fork.cnt": 413,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:50:32 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:32 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:32 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:32 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:32 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:32 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:32 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:50:32 remove worker.pid",
        "2021/03/21 21:50:32 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "registry": "/tmp/tmpp48conen",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 3000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 6.028457880020142,
      "total_seconds": 6.274067401885986,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 106,
        "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": 390,
        "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": 1598,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1601,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1598,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1597,
        "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": 5,
        "web-request.cnt": 1598,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:50:38 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:38 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:38 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:38 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:38 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:38 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:38 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:50:38 remove worker.pid",
        "2021/03/21 21:50:38 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 1,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 15.040846586227417,
      "total_seconds": 15.273074626922607,
      "stats": {
        "reqs_per_sec": 278.3333333333333
      },
      "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": 4175,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4178,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4175,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4174,
        "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": 4175,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:50:54 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:54 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:54 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:54 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:54 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:54 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:50:54 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:50:54 remove worker.pid",
        "2021/03/21 21:50:54 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 2,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 15.039778709411621,
      "total_seconds": 15.268951892852783,
      "stats": {
        "reqs_per_sec": 280.46666666666664
      },
      "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": 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": 2,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4207,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3736,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4207,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3732,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4207,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:51:09 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:09 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:09 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:09 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:09 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:09 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:09 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:51:09 remove worker.pid",
        "2021/03/21 21:51:09 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 8,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/root/open-lambda/test-registry",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 15.061466217041016,
      "total_seconds": 15.291650533676147,
      "stats": {
        "reqs_per_sec": 254.8
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 46,
        "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": 9,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 5,
        "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": 3822,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2810,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3822,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2806,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 4,
        "fork().cnt": 3,
        "fork().ms-avg": 8,
        "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": 1,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 4,
        "web-request.cnt": 3822,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:51:24 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:24 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:24 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:24 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:24 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:24 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:24 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:51:24 remove worker.pid",
        "2021/03/21 21:51:24 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "registry": "/tmp/tmpxv7knt_v",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": true
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 3.099900960922241,
      "total_seconds": 3.5249409675598145,
      "stats": {
        "reqs_per_sec": 32.25938790517535
      },
      "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": 158,
        "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": 2,
        "Destroy()/remove-root.cnt": 101,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 100,
        "LambdaFunc.Invoke.ms-avg": 27,
        "Pause().cnt": 200,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 8,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 3,
        "evict.cnt": 57,
        "evict.ms-avg": 10,
        "fork().cnt": 100,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 69,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 100,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 100,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 100,
        "web-request.ms-avg": 27
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:51:28 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:28 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:28 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:28 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:28 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:28 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:51:28 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:51:28 remove worker.pid",
        "2021/03/21 21:51:28 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10,
          "installer_mem_mb": 250
        },
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry": "/tmp/tmpp9p9ar8q",
        "sandbox": "sock",
        "server_mode": "lambda",
        "registry_cache_ms": 5000,
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": true
        },
        "mem_pool_mb": 500,
        "worker_port": "5000"
      },
      "seconds": 45.51256442070007,
      "total_seconds": 46.14854907989502,
      "stats": {
        "reqs_per_sec": 21.971980976053313
      },
      "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": 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": 9,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 20,
        "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": 3,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 41
      },
      "errors": [],
      "worker_tail": [
        "2021/03/21 21:52:14 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:52:14 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:52:14 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:52:14 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:52:14 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:52:14 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/21 21:52:14 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/21 21:52:14 remove worker.pid",
        "2021/03/21 21:52:14 exiting",
        ""
      ]
    }
  ],
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