{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": ""
      },
      "seconds": 2.115649700164795,
      "total_seconds": 2.3217694759368896,
      "stats": {
        "pings_per_sec": 472.6726223157432
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:43:27 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:27 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:27 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:27 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:27 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:27 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:27 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:43:27 remove worker.pid",
        "2019/08/18 21:43:27 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": ""
      },
      "seconds": 9.929356336593628,
      "total_seconds": 10.168857097625732,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 297,
        "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": 295,
        "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": 2472,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 91,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 7,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1253,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2472
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:43:37 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:37 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:37 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:37 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:37 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:37 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:37 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:43:37 remove worker.pid",
        "2019/08/18 21:43:37 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 6.2607338428497314,
      "total_seconds": 6.497747421264648,
      "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": 5,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 11,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 11,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 11,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 1557,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 62,
        "Unpause().cnt": 3,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 4,
        "childExit().ms-avg": 0,
        "fork().cnt": 4,
        "fork().ms-avg": 5,
        "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": 961,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1557
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:43:44 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:44 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:44 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:44 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:44 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:44 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:43:44 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:43:44 remove worker.pid",
        "2019/08/18 21:43:44 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": false,
          "downsize_paused_mem": true
        },
        "sandbox": "docker",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": ""
      },
      "seconds": 20.254761695861816,
      "total_seconds": 21.378751277923584,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 965,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 283,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 5051,
        "Pause().cnt": 4,
        "Pause().ms-avg": 49,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2361,
        "web-request.cnt": 4,
        "web-request.ms-avg": 5051
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:44:04 Kill function: install",
        "2019/08/18 21:44:04 Destroy() [SB 6]",
        "2019/08/18 21:44:05 Kill function: install2",
        "2019/08/18 21:44:05 Destroy() [SB 7]",
        "2019/08/18 21:44:05 Kill function: install3",
        "2019/08/18 21:44:05 Destroy() [SB 9]",
        "2019/08/18 21:44:05 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:44:05 remove worker.pid",
        "2019/08/18 21:44:05 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 0.17869853973388672,
      "total_seconds": 0.4120047092437744,
      "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": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 174,
        "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": 7,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 174
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:44:05 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:05 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:05 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:05 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:05 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:05 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:05 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:44:05 remove worker.pid",
        "2019/08/18 21:44:05 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 0.8803362846374512,
      "total_seconds": 1.109802007675171,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 77,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 2,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 2,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 2,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 2,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1,
        "LambdaFunc.Invoke.ms-avg": 876,
        "Pause().cnt": 2,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 713,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 2,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 1,
        "web-request.ms-avg": 876
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:44:07 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:07 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:07 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:07 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:07 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:07 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:07 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:44:07 remove worker.pid",
        "2019/08/18 21:44:07 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 33.71641659736633,
      "total_seconds": 33.95419979095459,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 131,
        "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": 147,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 38,
        "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": 6739,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 374,
        "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": 6,
        "pull-package.cnt": 7,
        "pull-package.ms-avg": 4442,
        "web-request.cnt": 5,
        "web-request.ms-avg": 6739
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:44:41 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:41 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:41 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:41 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:41 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:41 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:41 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:44:41 remove worker.pid",
        "2019/08/18 21:44:41 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": false,
        "procs": 1,
        "seconds": 5,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 5.128493785858154,
      "total_seconds": 5.352856874465942,
      "stats": {
        "sandboxes_per_sec": 6.0
      },
      "ol-stats": {
        "Create().cnt": 30,
        "Create().ms-avg": 151,
        "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": 146,
        "Create()/make-root-fs.cnt": 30,
        "Create()/make-root-fs.ms-avg": 4,
        "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": [
        "2019/08/18 21:44:46 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:46 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:46 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:46 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:46 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:46 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:46 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:44:46 remove worker.pid",
        "2019/08/18 21:44:46 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "procs": 1,
        "seconds": 10,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 10.183647632598877,
      "total_seconds": 10.421361684799194,
      "stats": {
        "sandboxes_per_sec": 43.6
      },
      "ol-stats": {
        "Create().cnt": 437,
        "Create().ms-avg": 10,
        "Create()/acquire-cgroup.cnt": 437,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 437,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 436,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 437,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 873,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 437,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 437,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 437,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 436,
        "childExit().ms-avg": 0,
        "fork().cnt": 436,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 436,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 454,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 436,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:44:56 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:56 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:56 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:56 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:56 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:56 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:44:56 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:44:56 remove worker.pid",
        "2019/08/18 21:44:56 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "procs": 15,
        "seconds": 10,
        "baseline": 0
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 10.383361339569092,
      "total_seconds": 10.61915373802185,
      "stats": {
        "sandboxes_per_sec": 44.2
      },
      "ol-stats": {
        "Create().cnt": 443,
        "Create().ms-avg": 89,
        "Create()/acquire-cgroup.cnt": 443,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 443,
        "Create()/acquire-mem.ms-avg": 17,
        "Create()/fork-proc.cnt": 442,
        "Create()/fork-proc.ms-avg": 68,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 443,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 885,
        "Destroy().ms-avg": 55,
        "Destroy()/detach-root.cnt": 443,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 443,
        "Destroy()/kill-procs.ms-avg": 15,
        "Destroy()/remove-root.cnt": 443,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 442,
        "childExit().ms-avg": 68,
        "fork().cnt": 442,
        "fork().ms-avg": 67,
        "forkRequest.cnt": 442,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 460,
        "fresh-cgroup.ms-avg": 5,
        "move-to-cg-after-fork.cnt": 442,
        "move-to-cg-after-fork.ms-avg": 3
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:45:07 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:07 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:07 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:07 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:07 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:07 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:07 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:45:07 remove worker.pid",
        "2019/08/18 21:45:07 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "procs": 1,
        "seconds": 10,
        "baseline": 32
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 10.838209629058838,
      "total_seconds": 11.426544904708862,
      "stats": {
        "sandboxes_per_sec": 39.9
      },
      "ol-stats": {
        "Create().cnt": 432,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 432,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 432,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 431,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 432,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 831,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 432,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 432,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 432,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 431,
        "childExit().ms-avg": 0,
        "fork().cnt": 431,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 431,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 449,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 431,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:45:18 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:18 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:18 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:18 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:18 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:18 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:18 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:45:18 remove worker.pid",
        "2019/08/18 21:45:18 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "fork": true,
        "procs": 15,
        "seconds": 10,
        "baseline": 32
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 11.141629934310913,
      "total_seconds": 11.499754428863525,
      "stats": {
        "sandboxes_per_sec": 40.5
      },
      "ol-stats": {
        "Create().cnt": 438,
        "Create().ms-avg": 134,
        "Create()/acquire-cgroup.cnt": 438,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 438,
        "Create()/acquire-mem.ms-avg": 77,
        "Create()/fork-proc.cnt": 437,
        "Create()/fork-proc.ms-avg": 51,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 184,
        "Create()/make-root-fs.cnt": 438,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 843,
        "Destroy().ms-avg": 52,
        "Destroy()/detach-root.cnt": 438,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 438,
        "Destroy()/kill-procs.ms-avg": 14,
        "Destroy()/remove-root.cnt": 438,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 437,
        "childExit().ms-avg": 59,
        "fork().cnt": 437,
        "fork().ms-avg": 51,
        "forkRequest.cnt": 437,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 455,
        "fresh-cgroup.ms-avg": 4,
        "move-to-cg-after-fork.cnt": 437,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:45:30 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:30 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:30 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:30 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:30 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:30 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:30 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:45:30 remove worker.pid",
        "2019/08/18 21:45:30 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/tmp/tmpoy_mwmgf",
        "mem_pool_mb": 500,
        "registry_cache_ms": 3000,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": ""
      },
      "seconds": 6.030986547470093,
      "total_seconds": 6.278604745864868,
      "stats": null,
      "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": 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": 1720,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1723,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1720,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1719,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 7,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 6,
        "web-request.cnt": 1720,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:45:36 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:36 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:36 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:36 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:36 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:36 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:36 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:45:36 remove worker.pid",
        "2019/08/18 21:45:36 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 1,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 15.042677879333496,
      "total_seconds": 15.272785663604736,
      "stats": {
        "reqs_per_sec": 288.0
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 43,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4320,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4323,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4320,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4319,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4320,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:45:51 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:51 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:51 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:51 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:51 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:51 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:45:51 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:45:51 remove worker.pid",
        "2019/08/18 21:45:51 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 2,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 15.043481826782227,
      "total_seconds": 15.410110235214233,
      "stats": {
        "reqs_per_sec": 284.1333333333333
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 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": 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": 4262,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3789,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4262,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3785,
        "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": 4262,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:46:07 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:07 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:07 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:07 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:07 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:07 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:07 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:46:07 remove worker.pid",
        "2019/08/18 21:46:07 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 8,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": false,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/root/open-lambda/test-registry",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 15.065850734710693,
      "total_seconds": 15.298074007034302,
      "stats": {
        "reqs_per_sec": 257.06666666666666
      },
      "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": 137,
        "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": 3856,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2914,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3856,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2910,
        "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": 3856,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:46:22 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:22 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:22 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:22 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:22 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:22 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:22 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:46:22 remove worker.pid",
        "2019/08/18 21:46:22 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/tmp/tmp50gywzlg",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "import_cache_tree": ""
      },
      "seconds": 2.8766422271728516,
      "total_seconds": 3.336470603942871,
      "stats": {
        "reqs_per_sec": 34.76401099868836
      },
      "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": 156,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 101,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 101,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 101,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 100,
        "LambdaFunc.Invoke.ms-avg": 24,
        "Pause().cnt": 200,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 5,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 3,
        "evict.cnt": 55,
        "evict.ms-avg": 11,
        "fork().cnt": 100,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 70,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 100,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 100,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 100,
        "web-request.ms-avg": 24
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:46:25 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:25 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:25 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:25 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:25 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:25 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:46:26 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:46:26 remove worker.pid",
        "2019/08/18 21:46:26 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "storage": {
          "scratch": "",
          "code": "",
          "root": "private"
        },
        "sandbox_config": {},
        "limits": {
          "installer_mem_mb": 250,
          "procs": 10,
          "swappiness": 0,
          "mem_mb": 50
        },
        "server_mode": "lambda",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "docker_runtime": "",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "features": {
          "reuse_cgroups": true,
          "import_cache": true,
          "downsize_paused_mem": true
        },
        "sandbox": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "worker_port": "5000",
        "pip_mirror": "",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "registry": "/tmp/tmp7na26ux5",
        "mem_pool_mb": 500,
        "registry_cache_ms": 5000,
        "import_cache_tree": ""
      },
      "seconds": 46.54845428466797,
      "total_seconds": 47.09609889984131,
      "stats": {
        "reqs_per_sec": 21.483005549256387
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 1001,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 1001,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1000,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 137,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 1982,
        "Destroy().ms-avg": 6,
        "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": 42,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 8,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 19,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 3,
        "evict.cnt": 981,
        "evict.ms-avg": 12,
        "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": 6,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 42
      },
      "errors": [],
      "worker_tail": [
        "2019/08/18 21:47:13 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:47:13 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:47:13 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:47:13 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:47:13 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:47:13 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/08/18 21:47:13 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/08/18 21:47:13 remove worker.pid",
        "2019/08/18 21:47:13 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 309.68899416923523
}