{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "server_mode": "lambda",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        }
      },
      "seconds": 2.2690839767456055,
      "total_seconds": 2.79484486579895,
      "stats": {
        "pings_per_sec": 440.7152266582074
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:47:46 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:47:46 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:47:46 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:47:46 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:47:46 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:47:46 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:47:46 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:47:46 remove worker.pid",
        "2021/03/12 21:47:46 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "server_mode": "lambda",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": false
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        }
      },
      "seconds": 14.590049743652344,
      "total_seconds": 14.826574325561523,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 564,
        "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": 562,
        "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": 3637,
        "Pause().cnt": 4,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 131,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 49,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1511,
        "web-request.cnt": 4,
        "web-request.ms-avg": 3637
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:48:01 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:01 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:01 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:01 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:01 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:01 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:01 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:48:01 remove worker.pid",
        "2021/03/12 21:48:01 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 8.514168500900269,
      "total_seconds": 8.751786708831787,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 94,
        "Create()/acquire-cgroup.cnt": 11,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 11,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 4,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 11,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 11,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 11,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 2120,
        "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": 1348,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2120
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:48:10 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:10 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:10 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:10 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:10 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:10 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:10 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:48:10 remove worker.pid",
        "2021/03/12 21:48:10 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "server_mode": "lambda",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10
        },
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": false
        },
        "sandbox": "docker",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        }
      },
      "seconds": 26.362993955612183,
      "total_seconds": 27.389320373535156,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 1427,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 355,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 6577,
        "Pause().cnt": 4,
        "Pause().ms-avg": 98,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 9,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2703,
        "web-request.cnt": 4,
        "web-request.ms-avg": 6577
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:48:36 Kill function: install",
        "2021/03/12 21:48:36 Destroy() [SB 6]",
        "2021/03/12 21:48:37 Kill function: install2",
        "2021/03/12 21:48:37 Destroy() [SB 7]",
        "2021/03/12 21:48:37 Kill function: install3",
        "2021/03/12 21:48:37 Destroy() [SB 9]",
        "2021/03/12 21:48:37 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:48:37 remove worker.pid",
        "2021/03/12 21:48:37 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 4.86362886428833,
      "total_seconds": 5.0922510623931885,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 2418,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 4820,
        "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": 4859,
        "Pause().cnt": 2,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 16,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 4859
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:48:42 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:42 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:42 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:42 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:42 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:42 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:42 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:48:42 remove worker.pid",
        "2021/03/12 21:48:42 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 0.9001317024230957,
      "total_seconds": 1.1335232257843018,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 80,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 9,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 142,
        "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": 896,
        "Pause().cnt": 2,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 729,
        "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": 896
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:48:43 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:43 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:43 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:43 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:43 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:43 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:48:43 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:48:43 remove worker.pid",
        "2021/03/12 21:48:43 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 42.4647581577301,
      "total_seconds": 42.690999031066895,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 13,
        "Channel().ms-avg": 0,
        "Create().cnt": 14,
        "Create().ms-avg": 166,
        "Create()/acquire-cgroup.cnt": 14,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 14,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 5,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 9,
        "Create()/fresh-proc.ms-avg": 142,
        "Create()/make-root-fs.cnt": 14,
        "Create()/make-root-fs.ms-avg": 72,
        "Destroy().cnt": 14,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 14,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 14,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 14,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 8489,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 425,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 31,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 5,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 5,
        "pull-lambda.ms-avg": 31,
        "pull-package.cnt": 8,
        "pull-package.ms-avg": 4944,
        "web-request.cnt": 5,
        "web-request.ms-avg": 8489
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:49:26 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:26 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:26 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:26 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:26 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:26 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:26 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:49:26 remove worker.pid",
        "2021/03/12 21:49:26 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 5,
        "procs": 1,
        "fork": false
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "sock",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 5.1626152992248535,
      "total_seconds": 5.286489725112915,
      "stats": {
        "sandboxes_per_sec": 4.2
      },
      "ol-stats": {
        "Create().cnt": 21,
        "Create().ms-avg": 218,
        "Create()/acquire-cgroup.cnt": 21,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 21,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 21,
        "Create()/fresh-proc.ms-avg": 213,
        "Create()/make-root-fs.cnt": 21,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 42,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 21,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 21,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 21,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 38,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:49:31 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:31 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:31 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:31 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:31 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:31 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:31 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:49:31 remove worker.pid",
        "2021/03/12 21:49:31 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 10,
        "procs": 1,
        "fork": true
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "sock",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 10.16446328163147,
      "total_seconds": 10.391699075698853,
      "stats": {
        "sandboxes_per_sec": 46.5
      },
      "ol-stats": {
        "Create().cnt": 466,
        "Create().ms-avg": 10,
        "Create()/acquire-cgroup.cnt": 466,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 466,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 465,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 135,
        "Create()/make-root-fs.cnt": 466,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 931,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 466,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 466,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 466,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 465,
        "childExit().ms-avg": 0,
        "fork().cnt": 465,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 465,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 483,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 465,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:49:42 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:42 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:42 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:42 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:42 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:42 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:42 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:49:42 remove worker.pid",
        "2021/03/12 21:49:42 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 10,
        "procs": 15,
        "fork": true
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "sock",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 10.479442119598389,
      "total_seconds": 10.717657804489136,
      "stats": {
        "sandboxes_per_sec": 48.0
      },
      "ol-stats": {
        "Create().cnt": 481,
        "Create().ms-avg": 63,
        "Create()/acquire-cgroup.cnt": 481,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 481,
        "Create()/acquire-mem.ms-avg": 26,
        "Create()/fork-proc.cnt": 480,
        "Create()/fork-proc.ms-avg": 35,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 137,
        "Create()/make-root-fs.cnt": 481,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 961,
        "Destroy().ms-avg": 53,
        "Destroy()/detach-root.cnt": 481,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 481,
        "Destroy()/kill-procs.ms-avg": 24,
        "Destroy()/remove-root.cnt": 481,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 480,
        "childExit().ms-avg": 31,
        "fork().cnt": 480,
        "fork().ms-avg": 35,
        "forkRequest.cnt": 480,
        "forkRequest.ms-avg": 7,
        "fresh-cgroup.cnt": 498,
        "fresh-cgroup.ms-avg": 1,
        "move-to-cg-after-fork.cnt": 480,
        "move-to-cg-after-fork.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:49:52 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:52 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:52 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:52 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:52 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:52 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:49:52 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:49:52 remove worker.pid",
        "2021/03/12 21:49:52 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "seconds": 10,
        "procs": 1,
        "fork": true
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "sock",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 10.801520586013794,
      "total_seconds": 11.153021812438965,
      "stats": {
        "sandboxes_per_sec": 43.7
      },
      "ol-stats": {
        "Create().cnt": 470,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 470,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 470,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 469,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 135,
        "Create()/make-root-fs.cnt": 470,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 907,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 470,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 470,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 470,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 469,
        "childExit().ms-avg": 0,
        "fork().cnt": 469,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 469,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 487,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 469,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:50:04 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:04 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:04 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:04 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:04 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:04 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:04 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:50:04 remove worker.pid",
        "2021/03/12 21:50:04 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "seconds": 10,
        "procs": 15,
        "fork": true
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "sock",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 11.089159488677979,
      "total_seconds": 11.552130699157715,
      "stats": {
        "sandboxes_per_sec": 37.3
      },
      "ol-stats": {
        "Create().cnt": 406,
        "Create().ms-avg": 150,
        "Create()/acquire-cgroup.cnt": 406,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 406,
        "Create()/acquire-mem.ms-avg": 87,
        "Create()/fork-proc.cnt": 405,
        "Create()/fork-proc.ms-avg": 59,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 167,
        "Create()/make-root-fs.cnt": 406,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 779,
        "Destroy().ms-avg": 56,
        "Destroy()/detach-root.cnt": 406,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 406,
        "Destroy()/kill-procs.ms-avg": 12,
        "Destroy()/remove-root.cnt": 406,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 405,
        "childExit().ms-avg": 63,
        "fork().cnt": 405,
        "fork().ms-avg": 59,
        "forkRequest.cnt": 405,
        "forkRequest.ms-avg": 12,
        "fresh-cgroup.cnt": 423,
        "fresh-cgroup.ms-avg": 4,
        "move-to-cg-after-fork.cnt": 405,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:50:15 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:15 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:15 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:15 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:15 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:15 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:15 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:50:15 remove worker.pid",
        "2021/03/12 21:50:15 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "server_mode": "lambda",
        "limits": {
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250
        },
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 3000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/tmp/tmp5gy54d9f",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        }
      },
      "seconds": 6.033435583114624,
      "total_seconds": 6.276131629943848,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 50,
        "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": 162,
        "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": 1675,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1678,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1675,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1674,
        "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": 1,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 4,
        "web-request.cnt": 1675,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:50:21 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:21 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:21 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:21 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:21 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:21 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:21 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:50:21 remove worker.pid",
        "2021/03/12 21:50:21 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 15.036893844604492,
      "total_seconds": 15.268435955047607,
      "stats": {
        "reqs_per_sec": 284.6
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4269,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4272,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4269,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4268,
        "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": 1,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4269,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:50:37 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:37 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:37 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:37 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:37 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:37 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:37 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:50:37 remove worker.pid",
        "2021/03/12 21:50:37 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 2
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 15.03841233253479,
      "total_seconds": 15.268781185150146,
      "stats": {
        "reqs_per_sec": 282.1333333333333
      },
      "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": 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": 4232,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3769,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4232,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3765,
        "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": 4232,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:50:52 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:52 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:52 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:52 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:52 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:52 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:50:52 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:50:52 remove worker.pid",
        "2021/03/12 21:50:52 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 8
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": false,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 15.061068058013916,
      "total_seconds": 15.292699575424194,
      "stats": {
        "reqs_per_sec": 249.86666666666667
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 45,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 8,
        "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": 5,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 1,
        "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": 3748,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2764,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3748,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2760,
        "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": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 3748,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:51:07 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:07 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:07 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:07 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:07 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:07 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:07 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:51:07 remove worker.pid",
        "2021/03/12 21:51:07 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "server_mode": "lambda",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "procs": 10,
          "mem_mb": 50
        },
        "pip_mirror": "",
        "import_cache_tree": "",
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": true,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/tmp/tmpkayckw7r",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        }
      },
      "seconds": 2.9987006187438965,
      "total_seconds": 3.4382846355438232,
      "stats": {
        "reqs_per_sec": 33.34809002600231
      },
      "ol-stats": {
        "Channel().cnt": 100,
        "Channel().ms-avg": 0,
        "Create().cnt": 101,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 101,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 101,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 100,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 155,
        "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": 25,
        "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": 54,
        "evict.ms-avg": 10,
        "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": 3,
        "web-request.cnt": 100,
        "web-request.ms-avg": 25
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:51:11 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:11 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:11 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:11 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:11 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:11 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:11 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:51:11 remove worker.pid",
        "2021/03/12 21:51:11 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "worker_port": "5000",
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "server_mode": "lambda",
        "import_cache_tree": "",
        "pip_mirror": "",
        "limits": {
          "swappiness": 0,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "procs": 10
        },
        "docker_runtime": "",
        "features": {
          "reuse_cgroups": true,
          "downsize_paused_mem": true,
          "import_cache": true
        },
        "sandbox": "sock",
        "registry_cache_ms": 5000,
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry": "/tmp/tmp7jlwcjwh",
        "storage": {
          "code": "",
          "root": "private",
          "scratch": ""
        },
        "mem_pool_mb": 500,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {}
      },
      "seconds": 45.89522409439087,
      "total_seconds": 46.4448721408844,
      "stats": {
        "reqs_per_sec": 21.788797758216774
      },
      "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": 451,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 1982,
        "Destroy().ms-avg": 5,
        "Destroy()/detach-root.cnt": 1001,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 1001,
        "Destroy()/kill-procs.ms-avg": 7,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 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": 981,
        "evict.ms-avg": 11,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 40,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1000,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1000,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 41
      },
      "errors": [],
      "worker_tail": [
        "2021/03/12 21:51:57 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:57 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:57 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:57 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:57 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:57 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2021/03/12 21:51:57 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2021/03/12 21:51:57 remove worker.pid",
        "2021/03/12 21:51:57 exiting",
        ""
      ]
    }
  ],
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}