{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "reuse_cgroups": false,
          "downsize_paused_mem": true
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 2.2190756797790527,
      "total_seconds": 2.460447072982788,
      "stats": {
        "pings_per_sec": 450.6423390445657
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:45:21 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:21 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:21 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:21 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:21 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:21 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:21 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:45:21 remove worker.pid",
        "2019/09/30 21:45:21 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "features": {
          "import_cache": false,
          "reuse_cgroups": false,
          "downsize_paused_mem": true
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 11.510236740112305,
      "total_seconds": 11.747573137283325,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 307,
        "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": 306,
        "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": 2849,
        "Pause().cnt": 4,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 46,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 10,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1499,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2849
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:45:32 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:32 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:32 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:32 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:32 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:32 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:32 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:45:32 remove worker.pid",
        "2019/09/30 21:45:32 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 6.108504772186279,
      "total_seconds": 6.34798264503479,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 94,
        "Create()/acquire-cgroup.cnt": 11,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 11,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 4,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 7,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 11,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 11,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 11,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 1519,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 43,
        "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": 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": 949,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1519
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:45:39 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:39 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:39 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:39 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:39 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:39 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:45:39 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:45:39 remove worker.pid",
        "2019/09/30 21:45:39 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "docker",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "features": {
          "import_cache": false,
          "reuse_cgroups": false,
          "downsize_paused_mem": true
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 19.646085262298584,
      "total_seconds": 20.969337224960327,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 903,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 265,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 4899,
        "Pause().cnt": 4,
        "Pause().ms-avg": 31,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 2,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2268,
        "web-request.cnt": 4,
        "web-request.ms-avg": 4899
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:45:59 Kill function: install",
        "2019/09/30 21:45:59 Destroy() [SB 6]",
        "2019/09/30 21:45:59 Kill function: install2",
        "2019/09/30 21:45:59 Destroy() [SB 7]",
        "2019/09/30 21:46:00 Kill function: install3",
        "2019/09/30 21:46:00 Destroy() [SB 9]",
        "2019/09/30 21:46:00 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:46:00 remove worker.pid",
        "2019/09/30 21:46:00 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 0.18154239654541016,
      "total_seconds": 0.41205644607543945,
      "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": 12,
        "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": 177,
        "Pause().cnt": 2,
        "Pause().ms-avg": 1,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 13,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 12,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 12,
        "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": 177
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:46:00 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:00 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:00 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:00 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:00 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:00 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:00 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:46:00 remove worker.pid",
        "2019/09/30 21:46:00 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 1.2535326480865479,
      "total_seconds": 1.4852023124694824,
      "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": 136,
        "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": 1249,
        "Pause().cnt": 2,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 684,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 408,
        "web-request.cnt": 1,
        "web-request.ms-avg": 1249
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:46:02 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:02 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:02 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:02 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:02 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:02 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:02 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:46:02 remove worker.pid",
        "2019/09/30 21:46:02 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 49.00316572189331,
      "total_seconds": 49.24868583679199,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 112,
        "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": 165,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 7,
        "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": 9796,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 305,
        "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": 4,
        "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": 5,
        "pull-package.cnt": 7,
        "pull-package.ms-avg": 6733,
        "web-request.cnt": 5,
        "web-request.ms-avg": 9796
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:46:51 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:51 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:51 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:51 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:51 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:51 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:51 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:46:51 remove worker.pid",
        "2019/09/30 21:46:51 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 1,
        "fork": false,
        "baseline": 0,
        "seconds": 5
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 5.143450975418091,
      "total_seconds": 5.366847276687622,
      "stats": {
        "sandboxes_per_sec": 6.2
      },
      "ol-stats": {
        "Create().cnt": 31,
        "Create().ms-avg": 145,
        "Create()/acquire-cgroup.cnt": 31,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 31,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 31,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 31,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 62,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 31,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 31,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 31,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 48,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:46:56 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:56 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:56 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:56 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:56 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:56 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:46:56 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:46:56 remove worker.pid",
        "2019/09/30 21:46:56 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 1,
        "fork": true,
        "baseline": 0,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 10.1531822681427,
      "total_seconds": 10.387295007705688,
      "stats": {
        "sandboxes_per_sec": 44.9
      },
      "ol-stats": {
        "Create().cnt": 450,
        "Create().ms-avg": 10,
        "Create()/acquire-cgroup.cnt": 450,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 450,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 449,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 134,
        "Create()/make-root-fs.cnt": 450,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 899,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 450,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 450,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 450,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 449,
        "childExit().ms-avg": 0,
        "fork().cnt": 449,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 449,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 467,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 449,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:47:07 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:07 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:07 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:07 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:07 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:07 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:07 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:47:07 remove worker.pid",
        "2019/09/30 21:47:07 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 15,
        "fork": true,
        "baseline": 0,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 10.392404794692993,
      "total_seconds": 10.636817216873169,
      "stats": {
        "sandboxes_per_sec": 46.0
      },
      "ol-stats": {
        "Create().cnt": 461,
        "Create().ms-avg": 69,
        "Create()/acquire-cgroup.cnt": 461,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 461,
        "Create()/acquire-mem.ms-avg": 18,
        "Create()/fork-proc.cnt": 460,
        "Create()/fork-proc.ms-avg": 48,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "Create()/make-root-fs.cnt": 461,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 921,
        "Destroy().ms-avg": 47,
        "Destroy()/detach-root.cnt": 461,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 461,
        "Destroy()/kill-procs.ms-avg": 13,
        "Destroy()/remove-root.cnt": 461,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 460,
        "childExit().ms-avg": 48,
        "fork().cnt": 460,
        "fork().ms-avg": 47,
        "forkRequest.cnt": 460,
        "forkRequest.ms-avg": 9,
        "fresh-cgroup.cnt": 478,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 460,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:47:17 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:17 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:17 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:17 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:17 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:17 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:17 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:47:17 remove worker.pid",
        "2019/09/30 21:47:17 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 1,
        "fork": true,
        "baseline": 32,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 10.823987007141113,
      "total_seconds": 11.305708408355713,
      "stats": {
        "sandboxes_per_sec": 43.2
      },
      "ol-stats": {
        "Create().cnt": 465,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 465,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 465,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 464,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 465,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 897,
        "Destroy().ms-avg": 0,
        "Destroy()/detach-root.cnt": 465,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 465,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 465,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 464,
        "childExit().ms-avg": 0,
        "fork().cnt": 464,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 464,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 482,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 464,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:47:29 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:29 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:29 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:29 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:29 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:29 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:29 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:47:29 remove worker.pid",
        "2019/09/30 21:47:29 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "procs": 15,
        "fork": true,
        "baseline": 32,
        "seconds": 10
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "sock",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-dir/registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 11.022768259048462,
      "total_seconds": 11.378188848495483,
      "stats": {
        "sandboxes_per_sec": 42.2
      },
      "ol-stats": {
        "Create().cnt": 455,
        "Create().ms-avg": 122,
        "Create()/acquire-cgroup.cnt": 455,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 455,
        "Create()/acquire-mem.ms-avg": 70,
        "Create()/fork-proc.cnt": 454,
        "Create()/fork-proc.ms-avg": 48,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 164,
        "Create()/make-root-fs.cnt": 455,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 877,
        "Destroy().ms-avg": 46,
        "Destroy()/detach-root.cnt": 455,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 455,
        "Destroy()/kill-procs.ms-avg": 11,
        "Destroy()/remove-root.cnt": 455,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 454,
        "childExit().ms-avg": 54,
        "fork().cnt": 454,
        "fork().ms-avg": 48,
        "forkRequest.cnt": 454,
        "forkRequest.ms-avg": 10,
        "fresh-cgroup.cnt": 472,
        "fresh-cgroup.ms-avg": 4,
        "move-to-cg-after-fork.cnt": 454,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:47:40 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:40 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:40 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:40 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:40 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:40 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:40 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:47:40 remove worker.pid",
        "2019/09/30 21:47:40 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/tmp/tmpdgcplbij",
        "pip_mirror": "",
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "reuse_cgroups": false,
          "downsize_paused_mem": true
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 3000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 6.031432151794434,
      "total_seconds": 6.276498317718506,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 54,
        "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": 183,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1664,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1667,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1664,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1663,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1664,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:47:46 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:46 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:46 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:46 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:46 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:46 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:47:46 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:47:46 remove worker.pid",
        "2019/09/30 21:47:46 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 1,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 15.043436288833618,
      "total_seconds": 15.26980996131897,
      "stats": {
        "reqs_per_sec": 285.8
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 137,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 2,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4287,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4290,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4287,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4286,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4287,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:48:02 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:02 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:02 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:02 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:02 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:02 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:02 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:48:02 remove worker.pid",
        "2019/09/30 21:48:02 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 2,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 15.047695636749268,
      "total_seconds": 15.343571662902832,
      "stats": {
        "reqs_per_sec": 283.8
      },
      "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": 134,
        "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": 4257,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3930,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4257,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3926,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 4257,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:48:17 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:17 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:17 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:17 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:17 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:17 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:17 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:48:17 remove worker.pid",
        "2019/09/30 21:48:17 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "procs": 8,
        "seconds": 15
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/root/open-lambda/test-registry",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 15.0631103515625,
      "total_seconds": 15.296502590179443,
      "stats": {
        "reqs_per_sec": 255.6
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 44,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 138,
        "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": 1,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 3834,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2984,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3834,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2980,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 1,
        "fork().cnt": 3,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 3834,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:48:32 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:32 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:32 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:32 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:32 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:32 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:32 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:48:32 remove worker.pid",
        "2019/09/30 21:48:32 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 100,
        "alloc_mb": 1
      },
      "pass": true,
      "conf": {
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "installer_mem_mb": 250,
          "swappiness": 0
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/tmp/tmp3wg7cxfq",
        "pip_mirror": "",
        "docker_runtime": "",
        "features": {
          "import_cache": true,
          "reuse_cgroups": true,
          "downsize_paused_mem": true
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 2.8242604732513428,
      "total_seconds": 3.2619738578796387,
      "stats": {
        "reqs_per_sec": 35.40778300198418
      },
      "ol-stats": {
        "Channel().cnt": 100,
        "Channel().ms-avg": 0,
        "Create().cnt": 101,
        "Create().ms-avg": 7,
        "Create()/acquire-cgroup.cnt": 101,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 101,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 100,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 154,
        "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": 53,
        "evict.ms-avg": 11,
        "fork().cnt": 100,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 67,
        "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": [
        "2019/09/30 21:48:35 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:35 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:35 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:35 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:35 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:35 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:48:36 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:48:36 remove worker.pid",
        "2019/09/30 21:48:36 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "lambda_count": 1000,
        "alloc_mb": 10
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": true
        },
        "server_mode": "lambda",
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "sandbox": "sock",
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "registry": "/tmp/tmprioflap2",
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "procs": 10,
          "swappiness": 0,
          "installer_mem_mb": 250,
          "mem_mb": 50
        },
        "import_cache_tree": "",
        "sandbox_config": {},
        "mem_pool_mb": 500,
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "registry_cache_ms": 5000,
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "trace": {
          "cgroups": false,
          "memory": false,
          "package": false,
          "evictor": false
        },
        "worker_port": "5000"
      },
      "seconds": 42.70755195617676,
      "total_seconds": 43.28608536720276,
      "stats": {
        "reqs_per_sec": 23.415075481320915
      },
      "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": 141,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 1980,
        "Destroy().ms-avg": 5,
        "Destroy()/detach-root.cnt": 1001,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 1001,
        "Destroy()/kill-procs.ms-avg": 7,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 38,
        "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": 2,
        "evict.cnt": 979,
        "evict.ms-avg": 10,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 40,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1000,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1000,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 38
      },
      "errors": [],
      "worker_tail": [
        "2019/09/30 21:49:19 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:49:19 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:49:19 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:49:19 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:49:19 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:49:19 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2019/09/30 21:49:19 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2019/09/30 21:49:19 remove worker.pid",
        "2019/09/30 21:49:19 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 337.57529497146606
}