{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "server_mode": "lambda",
        "import_cache_tree": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "pip_mirror": ""
      },
      "seconds": 2.311887502670288,
      "total_seconds": 2.6086831092834473,
      "stats": {
        "pings_per_sec": 432.5512361777205
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:46:08 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:08 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:08 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:08 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:08 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:08 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:08 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:46:08 remove worker.pid",
        "2019/11/14 21:46:08 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "server_mode": "lambda",
        "import_cache_tree": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": false,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "pip_mirror": ""
      },
      "seconds": 10.666775465011597,
      "total_seconds": 10.909791231155396,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 303,
        "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": 301,
        "Create()/make-root-fs.cnt": 10,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 10,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 10,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 10,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 2651,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 104,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 11,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1328,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2651
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:46:19 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:19 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:19 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:19 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:19 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:19 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:19 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:46:19 remove worker.pid",
        "2019/11/14 21:46:19 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 6.162340879440308,
      "total_seconds": 6.402610778808594,
      "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": 2,
        "Destroy().cnt": 11,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 11,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 11,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 1532,
        "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": 955,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1532
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:46:26 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:26 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:26 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:26 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:26 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:26 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:26 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:46:26 remove worker.pid",
        "2019/11/14 21:46:26 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "server_mode": "lambda",
        "import_cache_tree": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "docker",
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": false,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "pip_mirror": ""
      },
      "seconds": 20.544100046157837,
      "total_seconds": 21.67389488220215,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 927,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 242,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 5123,
        "Pause().cnt": 4,
        "Pause().ms-avg": 174,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 2,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2514,
        "web-request.cnt": 4,
        "web-request.ms-avg": 5123
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:46:47 Kill function: echo",
        "2019/11/14 21:46:47 Destroy() [SB 0]",
        "2019/11/14 21:46:47 Kill function: install",
        "2019/11/14 21:46:47 Destroy() [SB 6]",
        "2019/11/14 21:46:47 Kill function: install2",
        "2019/11/14 21:46:47 Destroy() [SB 7]",
        "2019/11/14 21:46:47 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:46:47 remove worker.pid",
        "2019/11/14 21:46:47 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 0.19201016426086426,
      "total_seconds": 0.42817211151123047,
      "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": 187,
        "Pause().cnt": 2,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 15,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 6,
        "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": 1,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 187
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:46:48 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:48 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:48 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:48 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:48 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:48 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:48 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:46:48 remove worker.pid",
        "2019/11/14 21:46:48 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 0.93662428855896,
      "total_seconds": 1.1752920150756836,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 79,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 8,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "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": 932,
        "Pause().cnt": 2,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 762,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 8,
        "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": 2,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 5,
        "web-request.cnt": 1,
        "web-request.ms-avg": 932
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:46:49 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:49 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:49 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:49 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:49 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:49 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:46:49 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:46:49 remove worker.pid",
        "2019/11/14 21:46:49 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 39.13355803489685,
      "total_seconds": 39.37004804611206,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 99,
        "Create()/acquire-cgroup.cnt": 13,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 13,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 5,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 8,
        "Create()/fresh-proc.ms-avg": 153,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 13,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 13,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 13,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 13,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 7822,
        "Pause().cnt": 10,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 310,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 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": 2,
        "pull-package.cnt": 7,
        "pull-package.ms-avg": 5331,
        "web-request.cnt": 5,
        "web-request.ms-avg": 7822
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:47:28 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:28 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:28 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:28 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:28 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:28 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:28 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:47:28 remove worker.pid",
        "2019/11/14 21:47:28 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 5,
        "fork": false,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 5.163365125656128,
      "total_seconds": 5.289653778076172,
      "stats": {
        "sandboxes_per_sec": 6.0
      },
      "ol-stats": {
        "Create().cnt": 30,
        "Create().ms-avg": 149,
        "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": 5,
        "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": 1,
        "Destroy()/remove-root.cnt": 30,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 47,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:47:34 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:34 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:34 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:34 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:34 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:34 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:34 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:47:34 remove worker.pid",
        "2019/11/14 21:47:34 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 10,
        "fork": true,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 10.186229467391968,
      "total_seconds": 10.416766881942749,
      "stats": {
        "sandboxes_per_sec": 36.6
      },
      "ol-stats": {
        "Create().cnt": 367,
        "Create().ms-avg": 12,
        "Create()/acquire-cgroup.cnt": 367,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 367,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 366,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 367,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 733,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 367,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 367,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 367,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 366,
        "childExit().ms-avg": 0,
        "fork().cnt": 366,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 366,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 384,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 366,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:47:44 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:44 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:44 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:44 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:44 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:44 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:44 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:47:44 remove worker.pid",
        "2019/11/14 21:47:44 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 10,
        "fork": true,
        "procs": 15
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 10.429150104522705,
      "total_seconds": 10.658994913101196,
      "stats": {
        "sandboxes_per_sec": 39.2
      },
      "ol-stats": {
        "Create().cnt": 393,
        "Create().ms-avg": 98,
        "Create()/acquire-cgroup.cnt": 393,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 393,
        "Create()/acquire-mem.ms-avg": 21,
        "Create()/fork-proc.cnt": 392,
        "Create()/fork-proc.ms-avg": 72,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 393,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 785,
        "Destroy().ms-avg": 65,
        "Destroy()/detach-root.cnt": 393,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 393,
        "Destroy()/kill-procs.ms-avg": 21,
        "Destroy()/remove-root.cnt": 393,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 392,
        "childExit().ms-avg": 72,
        "fork().cnt": 392,
        "fork().ms-avg": 72,
        "forkRequest.cnt": 392,
        "forkRequest.ms-avg": 11,
        "fresh-cgroup.cnt": 410,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 392,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:47:55 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:55 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:55 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:55 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:55 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:55 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:47:55 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:47:55 remove worker.pid",
        "2019/11/14 21:47:55 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "seconds": 10,
        "fork": true,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 10.937916994094849,
      "total_seconds": 11.295602560043335,
      "stats": {
        "sandboxes_per_sec": 36.0
      },
      "ol-stats": {
        "Create().cnt": 393,
        "Create().ms-avg": 8,
        "Create()/acquire-cgroup.cnt": 393,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 393,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 392,
        "Create()/fork-proc.ms-avg": 8,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 393,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 753,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 393,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 393,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 393,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 1,
        "childExit().cnt": 392,
        "childExit().ms-avg": 0,
        "fork().cnt": 392,
        "fork().ms-avg": 8,
        "forkRequest.cnt": 392,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 410,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 392,
        "move-to-cg-after-fork.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:48:06 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:06 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:06 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:06 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:06 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:06 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:06 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:48:06 remove worker.pid",
        "2019/11/14 21:48:06 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "seconds": 10,
        "fork": true,
        "procs": 15
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-dir/registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 11.160465002059937,
      "total_seconds": 11.627326726913452,
      "stats": {
        "sandboxes_per_sec": 36.3
      },
      "ol-stats": {
        "Create().cnt": 396,
        "Create().ms-avg": 150,
        "Create()/acquire-cgroup.cnt": 396,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 396,
        "Create()/acquire-mem.ms-avg": 92,
        "Create()/fork-proc.cnt": 395,
        "Create()/fork-proc.ms-avg": 55,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 143,
        "Create()/make-root-fs.cnt": 396,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 759,
        "Destroy().ms-avg": 59,
        "Destroy()/detach-root.cnt": 396,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 396,
        "Destroy()/kill-procs.ms-avg": 18,
        "Destroy()/remove-root.cnt": 396,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 1,
        "childExit().cnt": 395,
        "childExit().ms-avg": 60,
        "fork().cnt": 395,
        "fork().ms-avg": 55,
        "forkRequest.cnt": 395,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 413,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 395,
        "move-to-cg-after-fork.ms-avg": 3
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:48:18 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:18 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:18 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:18 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:18 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:18 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:18 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:48:18 remove worker.pid",
        "2019/11/14 21:48:18 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "server_mode": "lambda",
        "import_cache_tree": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/tmp/tmpii9xnh5i",
        "mem_pool_mb": 500,
        "registry_cache_ms": 3000,
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "pip_mirror": ""
      },
      "seconds": 6.038209438323975,
      "total_seconds": 6.286025524139404,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 53,
        "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": 176,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1570,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1573,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1570,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1569,
        "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": 4,
        "web-request.cnt": 1570,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:48:24 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:24 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:24 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:24 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:24 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:24 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:24 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:48:24 remove worker.pid",
        "2019/11/14 21:48:24 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 15.047371625900269,
      "total_seconds": 15.283472061157227,
      "stats": {
        "reqs_per_sec": 270.26666666666665
      },
      "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": 140,
        "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": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 4,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4054,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4057,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4054,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4053,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "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": 1,
        "web-request.cnt": 4054,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:48:39 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:39 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:39 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:39 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:39 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:39 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:39 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:48:39 remove worker.pid",
        "2019/11/14 21:48:39 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 2
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 15.053975582122803,
      "total_seconds": 15.286855220794678,
      "stats": {
        "reqs_per_sec": 267.06666666666666
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4006,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3556,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4006,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3552,
        "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": 2,
        "web-request.cnt": 4006,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:48:54 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:54 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:54 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:54 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:54 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:54 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:48:54 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:48:54 remove worker.pid",
        "2019/11/14 21:48:54 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 8
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/root/open-lambda/test-registry",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": false
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 15.074591159820557,
      "total_seconds": 15.309139490127563,
      "stats": {
        "reqs_per_sec": 227.93333333333334
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 3419,
        "LambdaFunc.Invoke.ms-avg": 3,
        "Pause().cnt": 2490,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3419,
        "ServeHTTP.ms-avg": 1,
        "Unpause().cnt": 2486,
        "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": 5,
        "web-request.cnt": 3419,
        "web-request.ms-avg": 3
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:49:10 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:10 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:10 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:10 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:10 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:10 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:10 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:49:10 remove worker.pid",
        "2019/11/14 21:49:10 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "server_mode": "lambda",
        "import_cache_tree": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/tmp/tmpockdgjhr",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": true
        },
        "worker_port": "5000",
        "docker_runtime": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "pip_mirror": ""
      },
      "seconds": 3.3689043521881104,
      "total_seconds": 3.9459807872772217,
      "stats": {
        "reqs_per_sec": 29.683484744226384
      },
      "ol-stats": {
        "Channel().cnt": 100,
        "Channel().ms-avg": 0,
        "Create().cnt": 101,
        "Create().ms-avg": 9,
        "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": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 143,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 150,
        "Destroy().ms-avg": 5,
        "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": 29,
        "Pause().cnt": 200,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 7,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 3,
        "evict.cnt": 49,
        "evict.ms-avg": 13,
        "fork().cnt": 100,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 5,
        "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": 29
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:49:14 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:14 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:14 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:14 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:14 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:14 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:49:14 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:49:14 remove worker.pid",
        "2019/11/14 21:49:14 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "import_cache_tree": "",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "sandbox": "sock",
        "registry": "/tmp/tmp173sort5",
        "storage": {
          "code": "",
          "scratch": "",
          "root": "private"
        },
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "sandbox_config": {},
        "limits": {
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50,
          "procs": 10
        },
        "trace": {
          "evictor": false,
          "cgroups": false,
          "package": false,
          "memory": false
        },
        "features": {
          "downsize_paused_mem": true,
          "import_cache": true,
          "reuse_cgroups": true
        },
        "worker_port": "5000",
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500,
        "worker_dir": "/root/open-lambda/test-dir/worker"
      },
      "seconds": 53.64836072921753,
      "total_seconds": 54.20285725593567,
      "stats": {
        "reqs_per_sec": 18.63991161287029
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 9,
        "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": 148,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 1981,
        "Destroy().ms-avg": 7,
        "Destroy()/detach-root.cnt": 1001,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 1001,
        "Destroy()/kill-procs.ms-avg": 8,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 48,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 21,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 5,
        "evict.cnt": 980,
        "evict.ms-avg": 14,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 41,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1000,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1000,
        "pull-lambda.ms-avg": 7,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 49
      },
      "errors": [],
      "worker_tail": [
        "2019/11/14 21:50:08 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:50:08 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:50:08 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:50:08 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:50:08 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:50:08 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/11/14 21:50:08 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/11/14 21:50:08 remove worker.pid",
        "2019/11/14 21:50:08 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 318.1109209060669
}