{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "worker_port": "5000",
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox_config": {},
        "pip_mirror": ""
      },
      "seconds": 2.165379285812378,
      "total_seconds": 2.4613773822784424,
      "stats": {
        "pings_per_sec": 461.8172325059212
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:43:42 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:42 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:42 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:42 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:42 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:42 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:42 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:43:42 remove worker.pid",
        "2019/08/02 21:43:42 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "worker_port": "5000",
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "features": {
          "import_cache": false,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox_config": {},
        "pip_mirror": ""
      },
      "seconds": 10.501572608947754,
      "total_seconds": 10.739111185073853,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 292,
        "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": 291,
        "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": 2616,
        "Pause().cnt": 4,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 65,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 43,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1323,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2616
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:43:52 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:52 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:52 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:52 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:52 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:52 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:52 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:43:52 remove worker.pid",
        "2019/08/02 21:43:52 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 6.89134669303894,
      "total_seconds": 7.128593921661377,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 103,
        "Create()/acquire-cgroup.cnt": 11,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 11,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 4,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 12,
        "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": 1715,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 60,
        "Unpause().cnt": 3,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 4,
        "childExit().ms-avg": 0,
        "fork().cnt": 4,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 4,
        "forkRequest.ms-avg": 5,
        "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": 1048,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1715
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:43:59 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:59 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:59 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:59 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:59 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:59 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:43:59 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:43:59 remove worker.pid",
        "2019/08/02 21:43:59 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "worker_port": "5000",
        "sandbox": "docker",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "features": {
          "import_cache": false,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox_config": {},
        "pip_mirror": ""
      },
      "seconds": 19.421924114227295,
      "total_seconds": 20.445956707000732,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 885,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 240,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 4843,
        "Pause().cnt": 4,
        "Pause().ms-avg": 31,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 2,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2278,
        "web-request.cnt": 4,
        "web-request.ms-avg": 4843
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:44:19 Kill function: install",
        "2019/08/02 21:44:19 Destroy() [SB 6]",
        "2019/08/02 21:44:20 Kill function: install2",
        "2019/08/02 21:44:20 Destroy() [SB 7]",
        "2019/08/02 21:44:20 Kill function: install3",
        "2019/08/02 21:44:20 Destroy() [SB 9]",
        "2019/08/02 21:44:20 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:44:20 remove worker.pid",
        "2019/08/02 21:44:20 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 0.18469500541687012,
      "total_seconds": 0.4169449806213379,
      "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": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 145,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 180,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 11,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 180
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:44:20 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:20 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:20 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:20 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:20 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:20 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:20 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:44:20 remove worker.pid",
        "2019/08/02 21:44:20 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 0.8358209133148193,
      "total_seconds": 1.065561294555664,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 76,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 137,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 832,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 669,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 832
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:44:21 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:21 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:21 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:21 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:21 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:21 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:21 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:44:21 remove worker.pid",
        "2019/08/02 21:44:21 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 27.74052906036377,
      "total_seconds": 27.995439052581787,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 116,
        "Create()/acquire-cgroup.cnt": 13,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 13,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 5,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 8,
        "Create()/fresh-proc.ms-avg": 163,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 12,
        "Destroy().cnt": 13,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 13,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 13,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 13,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 5544,
        "Pause().cnt": 10,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 416,
        "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": 30,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 5,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 5,
        "pull-lambda.ms-avg": 7,
        "pull-package.cnt": 7,
        "pull-package.ms-avg": 3604,
        "web-request.cnt": 5,
        "web-request.ms-avg": 5544
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:44:49 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:49 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:49 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:49 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:49 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:49 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:49 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:44:49 remove worker.pid",
        "2019/08/02 21:44:49 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 5,
        "baseline": 0,
        "procs": 1,
        "fork": false
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "sock"
      },
      "seconds": 5.236392974853516,
      "total_seconds": 5.35841965675354,
      "stats": {
        "sandboxes_per_sec": 6.0
      },
      "ol-stats": {
        "Create().cnt": 30,
        "Create().ms-avg": 154,
        "Create()/acquire-cgroup.cnt": 30,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 30,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 30,
        "Create()/fresh-proc.ms-avg": 143,
        "Create()/make-root-fs.cnt": 30,
        "Create()/make-root-fs.ms-avg": 10,
        "Destroy().cnt": 60,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 30,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 30,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 30,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 47,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:44:55 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:55 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:55 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:55 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:55 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:55 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:44:55 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:44:55 remove worker.pid",
        "2019/08/02 21:44:55 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "baseline": 0,
        "procs": 1,
        "fork": true
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "sock"
      },
      "seconds": 10.2494056224823,
      "total_seconds": 10.476167917251587,
      "stats": {
        "sandboxes_per_sec": 44.5
      },
      "ol-stats": {
        "Create().cnt": 446,
        "Create().ms-avg": 10,
        "Create()/acquire-cgroup.cnt": 446,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 446,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 445,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 135,
        "Create()/make-root-fs.cnt": 446,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 891,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 446,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 446,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 446,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 445,
        "childExit().ms-avg": 0,
        "fork().cnt": 445,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 445,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 463,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 445,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:45:05 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:05 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:05 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:05 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:05 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:05 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:05 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:45:05 remove worker.pid",
        "2019/08/02 21:45:05 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "baseline": 0,
        "procs": 15,
        "fork": true
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "sock"
      },
      "seconds": 10.293017148971558,
      "total_seconds": 10.52707552909851,
      "stats": {
        "sandboxes_per_sec": 44.9
      },
      "ol-stats": {
        "Create().cnt": 450,
        "Create().ms-avg": 84,
        "Create()/acquire-cgroup.cnt": 450,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 450,
        "Create()/acquire-mem.ms-avg": 16,
        "Create()/fork-proc.cnt": 449,
        "Create()/fork-proc.ms-avg": 64,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 450,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 899,
        "Destroy().ms-avg": 48,
        "Destroy()/detach-root.cnt": 450,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 450,
        "Destroy()/kill-procs.ms-avg": 11,
        "Destroy()/remove-root.cnt": 450,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 449,
        "childExit().ms-avg": 60,
        "fork().cnt": 449,
        "fork().ms-avg": 64,
        "forkRequest.cnt": 449,
        "forkRequest.ms-avg": 11,
        "fresh-cgroup.cnt": 467,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 449,
        "move-to-cg-after-fork.ms-avg": 3
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:45:16 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:16 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:16 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:16 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:16 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:16 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:16 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:45:16 remove worker.pid",
        "2019/08/02 21:45:16 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "baseline": 32,
        "procs": 1,
        "fork": true
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "sock"
      },
      "seconds": 10.820292234420776,
      "total_seconds": 11.159255027770996,
      "stats": {
        "sandboxes_per_sec": 45.0
      },
      "ol-stats": {
        "Create().cnt": 483,
        "Create().ms-avg": 6,
        "Create()/acquire-cgroup.cnt": 483,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 483,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 482,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 483,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 933,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 483,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 483,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 483,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 482,
        "childExit().ms-avg": 0,
        "fork().cnt": 482,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 482,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 500,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 482,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:45:27 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:27 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:27 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:27 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:27 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:27 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:27 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:45:27 remove worker.pid",
        "2019/08/02 21:45:27 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "seconds": 10,
        "baseline": 32,
        "procs": 15,
        "fork": true
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-dir/registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "sock"
      },
      "seconds": 10.935986757278442,
      "total_seconds": 11.385845184326172,
      "stats": {
        "sandboxes_per_sec": 41.5
      },
      "ol-stats": {
        "Create().cnt": 448,
        "Create().ms-avg": 122,
        "Create()/acquire-cgroup.cnt": 448,
        "Create()/acquire-cgroup.ms-avg": 1,
        "Create()/acquire-mem.cnt": 448,
        "Create()/acquire-mem.ms-avg": 69,
        "Create()/fork-proc.cnt": 447,
        "Create()/fork-proc.ms-avg": 49,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 135,
        "Create()/make-root-fs.cnt": 448,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 863,
        "Destroy().ms-avg": 48,
        "Destroy()/detach-root.cnt": 448,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 448,
        "Destroy()/kill-procs.ms-avg": 10,
        "Destroy()/remove-root.cnt": 448,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 447,
        "childExit().ms-avg": 57,
        "fork().cnt": 447,
        "fork().ms-avg": 49,
        "forkRequest.cnt": 447,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 465,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 447,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:45:38 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:38 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:38 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:38 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:38 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:38 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:38 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:45:38 remove worker.pid",
        "2019/08/02 21:45:38 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "registry_cache_ms": 3000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/tmp/tmp0ulwp9j9",
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "worker_port": "5000",
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox_config": {},
        "pip_mirror": ""
      },
      "seconds": 6.0361151695251465,
      "total_seconds": 6.278556823730469,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 48,
        "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": 161,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1691,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1694,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1691,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1690,
        "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": 3,
        "web-request.cnt": 1691,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:45:45 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:45 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:45 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:45 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:45 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:45 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:45:45 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:45:45 remove worker.pid",
        "2019/08/02 21:45:45 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 15.049560546875,
      "total_seconds": 15.280629873275757,
      "stats": {
        "reqs_per_sec": 288.93333333333334
      },
      "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": 135,
        "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": 4334,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4337,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4334,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4333,
        "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": 4334,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:46:00 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:00 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:00 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:00 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:00 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:00 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:00 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:46:00 remove worker.pid",
        "2019/08/02 21:46:00 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 2
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 15.047166585922241,
      "total_seconds": 15.278217315673828,
      "stats": {
        "reqs_per_sec": 288.53333333333336
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 136,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4328,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3901,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4328,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3897,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4328,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:46:15 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:15 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:15 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:15 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:15 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:15 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:15 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:46:15 remove worker.pid",
        "2019/08/02 21:46:15 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 8
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/root/open-lambda/test-registry",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 15.064526319503784,
      "total_seconds": 15.29530143737793,
      "stats": {
        "reqs_per_sec": 263.26666666666665
      },
      "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": 5,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 1,
        "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": 3949,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2959,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3949,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2955,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 2,
        "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": 2,
        "web-request.cnt": 3949,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:46:30 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:30 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:30 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:30 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:30 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:30 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:30 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:46:30 remove worker.pid",
        "2019/08/02 21:46:30 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/tmp/tmpbrt47m9_",
        "mem_pool_mb": 500,
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "worker_port": "5000",
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": true
        },
        "docker_runtime": "",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox_config": {},
        "pip_mirror": ""
      },
      "seconds": 2.7447752952575684,
      "total_seconds": 3.1938204765319824,
      "stats": {
        "reqs_per_sec": 36.43317134458192
      },
      "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": 137,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 157,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 101,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 101,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 101,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 100,
        "LambdaFunc.Invoke.ms-avg": 23,
        "Pause().cnt": 200,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 5,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 2,
        "evict.cnt": 56,
        "evict.ms-avg": 9,
        "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": 23
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:46:34 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:34 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:34 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:34 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:34 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:34 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:46:34 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:46:34 remove worker.pid",
        "2019/08/02 21:46:34 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "pip_mirror": "",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "mem_pool_mb": 500,
        "registry": "/tmp/tmp4oop5dl9",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": true
        },
        "sandbox": "sock",
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "trace": {
          "memory": false,
          "package": false,
          "evictor": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "registry_cache_ms": 5000,
        "worker_port": "5000",
        "storage": {
          "root": "private",
          "code": "",
          "scratch": ""
        },
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox_config": {},
        "server_mode": "lambda"
      },
      "seconds": 42.11795401573181,
      "total_seconds": 42.66635203361511,
      "stats": {
        "reqs_per_sec": 23.742865224291574
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 6,
        "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": 136,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 0,
        "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": 6,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 38,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 19,
        "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": 2,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 38
      },
      "errors": [],
      "worker_tail": [
        "2019/08/02 21:47:16 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:47:16 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:47:16 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:47:16 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:47:16 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:47:16 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/02 21:47:16 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/02 21:47:16 remove worker.pid",
        "2019/08/02 21:47:16 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 284.8190948963165
}