{
  "runs": [
    {
      "test": "ping_test",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "swappiness": 0,
          "installer_mem_mb": 250
        },
        "import_cache_tree": "",
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "sandbox_config": {},
        "server_mode": "lambda",
        "sandbox": "sock",
        "docker_runtime": "",
        "mem_pool_mb": 500
      },
      "seconds": 2.227327823638916,
      "total_seconds": 2.660144090652466,
      "stats": {
        "pings_per_sec": 448.9730993190533
      },
      "ol-stats": {
        "fresh-cgroup.cnt": 17,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:44:21 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:21 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:21 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:21 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:21 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:21 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:21 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:44:21 remove worker.pid",
        "2020/04/15 21:44:21 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": false,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "swappiness": 0,
          "installer_mem_mb": 250
        },
        "import_cache_tree": "",
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "sandbox_config": {},
        "server_mode": "lambda",
        "sandbox": "sock",
        "docker_runtime": "",
        "mem_pool_mb": 500
      },
      "seconds": 11.941677331924438,
      "total_seconds": 12.18548321723938,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 271,
        "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": 269,
        "Create()/make-root-fs.cnt": 10,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 10,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 10,
        "Destroy()/kill-procs.ms-avg": 2,
        "Destroy()/remove-root.cnt": 10,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 2974,
        "Pause().cnt": 4,
        "Pause().ms-avg": 3,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 50,
        "fresh-cgroup.cnt": 27,
        "fresh-cgroup.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 13,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1637,
        "web-request.cnt": 4,
        "web-request.ms-avg": 2974
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:44:33 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:33 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:33 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:33 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:33 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:33 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:33 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:44:33 remove worker.pid",
        "2020/04/15 21:44:33 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 6.733956336975098,
      "total_seconds": 6.9803807735443115,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 11,
        "Create().ms-avg": 108,
        "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": 162,
        "Create()/make-root-fs.cnt": 11,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 11,
        "Destroy().ms-avg": 3,
        "Destroy()/detach-root.cnt": 11,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 11,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 11,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 1675,
        "Pause().cnt": 8,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 44,
        "Unpause().cnt": 3,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 4,
        "childExit().ms-avg": 0,
        "fork().cnt": 4,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 4,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 28,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 4,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 1024,
        "web-request.cnt": 4,
        "web-request.ms-avg": 1675
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:44:40 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:40 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:40 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:40 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:40 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:40 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:44:40 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:44:40 remove worker.pid",
        "2020/04/15 21:44:40 exiting",
        ""
      ]
    },
    {
      "test": "install_tests",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": false,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "swappiness": 0,
          "installer_mem_mb": 250
        },
        "import_cache_tree": "",
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "sandbox_config": {},
        "server_mode": "lambda",
        "sandbox": "docker",
        "docker_runtime": "",
        "mem_pool_mb": 500
      },
      "seconds": 20.92365312576294,
      "total_seconds": 22.356873750686646,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 10,
        "Channel().ms-avg": 0,
        "Create().cnt": 10,
        "Create().ms-avg": 864,
        "Destroy().cnt": 10,
        "Destroy().ms-avg": 374,
        "LambdaFunc.Invoke.cnt": 4,
        "LambdaFunc.Invoke.ms-avg": 5217,
        "Pause().cnt": 4,
        "Pause().ms-avg": 30,
        "ServeHTTP.cnt": 4,
        "ServeHTTP.ms-avg": 1,
        "pull-lambda.cnt": 4,
        "pull-lambda.ms-avg": 1,
        "pull-package.cnt": 6,
        "pull-package.ms-avg": 2572,
        "web-request.cnt": 4,
        "web-request.ms-avg": 5217
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:45:02 Kill function: install",
        "2020/04/15 21:45:02 Destroy() [SB 6]",
        "2020/04/15 21:45:02 Kill function: install2",
        "2020/04/15 21:45:02 Destroy() [SB 7]",
        "2020/04/15 21:45:03 Kill function: install3",
        "2020/04/15 21:45:03 Destroy() [SB 9]",
        "2020/04/15 21:45:03 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:45:03 remove worker.pid",
        "2020/04/15 21:45:03 exiting",
        ""
      ]
    },
    {
      "test": "fork_bomb",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 0.32845473289489746,
      "total_seconds": 0.5620670318603516,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 149,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 5,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 282,
        "Create()/make-root-fs.cnt": 2,
        "Create()/make-root-fs.ms-avg": 5,
        "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": 324,
        "Pause().cnt": 2,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 13,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 5,
        "forkRequest.cnt": 1,
        "forkRequest.ms-avg": 4,
        "fresh-cgroup.cnt": 19,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1,
        "move-to-cg-after-fork.ms-avg": 1,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 324
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:45:03 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:03 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:03 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:03 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:03 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:03 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:03 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:45:03 remove worker.pid",
        "2020/04/15 21:45:03 exiting",
        ""
      ]
    },
    {
      "test": "max_mem_alloc",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 0.9187881946563721,
      "total_seconds": 1.154038906097412,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 1,
        "Channel().ms-avg": 0,
        "Create().cnt": 2,
        "Create().ms-avg": 78,
        "Create()/acquire-cgroup.cnt": 2,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 2,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "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": 914,
        "Pause().cnt": 2,
        "Pause().ms-avg": 5,
        "ServeHTTP.cnt": 1,
        "ServeHTTP.ms-avg": 746,
        "childExit().cnt": 1,
        "childExit().ms-avg": 0,
        "fork().cnt": 1,
        "fork().ms-avg": 6,
        "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": 0,
        "pull-lambda.cnt": 1,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1,
        "web-request.ms-avg": 914
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:45:05 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:05 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:05 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:05 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:05 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:05 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:05 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:45:05 remove worker.pid",
        "2020/04/15 21:45:05 exiting",
        ""
      ]
    },
    {
      "test": "numpy_test",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 45.388049364089966,
      "total_seconds": 45.64988613128662,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 12,
        "Channel().ms-avg": 0,
        "Create().cnt": 13,
        "Create().ms-avg": 135,
        "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": 62,
        "Create()/fresh-proc.cnt": 8,
        "Create()/fresh-proc.ms-avg": 151,
        "Create()/make-root-fs.cnt": 13,
        "Create()/make-root-fs.ms-avg": 18,
        "Destroy().cnt": 13,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 13,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 13,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 13,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 5,
        "LambdaFunc.Invoke.ms-avg": 9073,
        "Pause().cnt": 10,
        "Pause().ms-avg": 4,
        "ServeHTTP.cnt": 5,
        "ServeHTTP.ms-avg": 519,
        "Unpause().cnt": 4,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 5,
        "childExit().ms-avg": 0,
        "fork().cnt": 5,
        "fork().ms-avg": 62,
        "forkRequest.cnt": 5,
        "forkRequest.ms-avg": 61,
        "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": 4,
        "pull-package.cnt": 7,
        "pull-package.ms-avg": 5999,
        "web-request.cnt": 5,
        "web-request.ms-avg": 9073
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:45:50 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:50 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:50 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:50 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:50 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:50 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:50 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:45:50 remove worker.pid",
        "2020/04/15 21:45:50 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 5,
        "fork": false,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "sock",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 5.146132707595825,
      "total_seconds": 5.3704352378845215,
      "stats": {
        "sandboxes_per_sec": 5.8
      },
      "ol-stats": {
        "Create().cnt": 29,
        "Create().ms-avg": 151,
        "Create()/acquire-cgroup.cnt": 29,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 29,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fresh-proc.cnt": 29,
        "Create()/fresh-proc.ms-avg": 146,
        "Create()/make-root-fs.cnt": 29,
        "Create()/make-root-fs.ms-avg": 4,
        "Destroy().cnt": 58,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 29,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 29,
        "Destroy()/kill-procs.ms-avg": 1,
        "Destroy()/remove-root.cnt": 29,
        "Destroy()/remove-root.ms-avg": 0,
        "fresh-cgroup.cnt": 46,
        "fresh-cgroup.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:45:56 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:56 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:56 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:56 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:56 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:56 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:45:56 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:45:56 remove worker.pid",
        "2020/04/15 21:45:56 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 10,
        "fork": true,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "sock",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 10.185230731964111,
      "total_seconds": 10.425715208053589,
      "stats": {
        "sandboxes_per_sec": 39.0
      },
      "ol-stats": {
        "Create().cnt": 391,
        "Create().ms-avg": 12,
        "Create()/acquire-cgroup.cnt": 391,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 391,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 390,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 137,
        "Create()/make-root-fs.cnt": 391,
        "Create()/make-root-fs.ms-avg": 3,
        "Destroy().cnt": 781,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 391,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 391,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 391,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 390,
        "childExit().ms-avg": 0,
        "fork().cnt": 390,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 390,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 408,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 390,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:46:06 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:06 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:06 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:06 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:06 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:06 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:06 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:46:06 remove worker.pid",
        "2020/04/15 21:46:06 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 0,
        "seconds": 10,
        "fork": true,
        "procs": 15
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "sock",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 10.29407000541687,
      "total_seconds": 10.537749290466309,
      "stats": {
        "sandboxes_per_sec": 39.2
      },
      "ol-stats": {
        "Create().cnt": 393,
        "Create().ms-avg": 94,
        "Create()/acquire-cgroup.cnt": 393,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 393,
        "Create()/acquire-mem.ms-avg": 17,
        "Create()/fork-proc.cnt": 392,
        "Create()/fork-proc.ms-avg": 73,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 393,
        "Create()/make-root-fs.ms-avg": 1,
        "Destroy().cnt": 785,
        "Destroy().ms-avg": 58,
        "Destroy()/detach-root.cnt": 393,
        "Destroy()/detach-root.ms-avg": 1,
        "Destroy()/kill-procs.cnt": 393,
        "Destroy()/kill-procs.ms-avg": 14,
        "Destroy()/remove-root.cnt": 393,
        "Destroy()/remove-root.ms-avg": 0,
        "childExit().cnt": 392,
        "childExit().ms-avg": 75,
        "fork().cnt": 392,
        "fork().ms-avg": 73,
        "forkRequest.cnt": 392,
        "forkRequest.ms-avg": 12,
        "fresh-cgroup.cnt": 410,
        "fresh-cgroup.ms-avg": 4,
        "move-to-cg-after-fork.cnt": 392,
        "move-to-cg-after-fork.ms-avg": 3
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:46:17 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:17 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:17 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:17 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:17 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:17 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:17 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:46:17 remove worker.pid",
        "2020/04/15 21:46:17 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "seconds": 10,
        "fork": true,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "sock",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 10.898685216903687,
      "total_seconds": 11.245591402053833,
      "stats": {
        "sandboxes_per_sec": 40.5
      },
      "ol-stats": {
        "Create().cnt": 438,
        "Create().ms-avg": 8,
        "Create()/acquire-cgroup.cnt": 438,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 438,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 437,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 139,
        "Create()/make-root-fs.cnt": 438,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 843,
        "Destroy().ms-avg": 1,
        "Destroy()/detach-root.cnt": 438,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 438,
        "Destroy()/kill-procs.ms-avg": 0,
        "Destroy()/remove-root.cnt": 438,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 0,
        "childExit().cnt": 437,
        "childExit().ms-avg": 0,
        "fork().cnt": 437,
        "fork().ms-avg": 7,
        "forkRequest.cnt": 437,
        "forkRequest.ms-avg": 6,
        "fresh-cgroup.cnt": 455,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 437,
        "move-to-cg-after-fork.ms-avg": 0
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:46:28 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:28 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:28 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:28 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:28 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:28 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:28 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:46:28 remove worker.pid",
        "2020/04/15 21:46:28 exiting",
        ""
      ]
    },
    {
      "test": "sock_churn",
      "params": {
        "baseline": 32,
        "seconds": 10,
        "fork": true,
        "procs": 15
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-dir/registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "sock",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 11.112459182739258,
      "total_seconds": 11.468605041503906,
      "stats": {
        "sandboxes_per_sec": 37.0
      },
      "ol-stats": {
        "Create().cnt": 403,
        "Create().ms-avg": 139,
        "Create()/acquire-cgroup.cnt": 403,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 403,
        "Create()/acquire-mem.ms-avg": 78,
        "Create()/fork-proc.cnt": 402,
        "Create()/fork-proc.ms-avg": 57,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 189,
        "Create()/make-root-fs.cnt": 403,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 773,
        "Destroy().ms-avg": 53,
        "Destroy()/detach-root.cnt": 403,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 403,
        "Destroy()/kill-procs.ms-avg": 14,
        "Destroy()/remove-root.cnt": 403,
        "Destroy()/remove-root.ms-avg": 0,
        "Pause().cnt": 32,
        "Pause().ms-avg": 1,
        "childExit().cnt": 402,
        "childExit().ms-avg": 61,
        "fork().cnt": 402,
        "fork().ms-avg": 57,
        "forkRequest.cnt": 402,
        "forkRequest.ms-avg": 11,
        "fresh-cgroup.cnt": 420,
        "fresh-cgroup.ms-avg": 3,
        "move-to-cg-after-fork.cnt": 402,
        "move-to-cg-after-fork.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:46:39 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:39 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:39 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:39 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:39 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:39 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:39 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:46:39 remove worker.pid",
        "2020/04/15 21:46:39 exiting",
        ""
      ]
    },
    {
      "test": "update_code",
      "params": {},
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 3000,
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "swappiness": 0,
          "installer_mem_mb": 250
        },
        "import_cache_tree": "",
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/tmp/tmp2r9iw_0x",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "sandbox_config": {},
        "server_mode": "lambda",
        "sandbox": "sock",
        "docker_runtime": "",
        "mem_pool_mb": 500
      },
      "seconds": 6.0432140827178955,
      "total_seconds": 6.289297580718994,
      "stats": null,
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 60,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 8,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 208,
        "Create()/make-root-fs.cnt": 4,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 4,
        "Destroy().ms-avg": 4,
        "Destroy()/detach-root.cnt": 4,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 4,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1656,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 1659,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 1656,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 1655,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 8,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 7,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 1656,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:46:46 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:46 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:46 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:46 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:46 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:46 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:46:46 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:46:46 remove worker.pid",
        "2020/04/15 21:46:46 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 1
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 15.043586492538452,
      "total_seconds": 15.27899432182312,
      "stats": {
        "reqs_per_sec": 283.2
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 45,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 142,
        "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": 4,
        "Destroy()/remove-root.cnt": 4,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 4248,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 4251,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4248,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 4247,
        "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": 4248,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:47:01 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:01 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:01 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:01 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:01 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:01 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:01 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:47:01 remove worker.pid",
        "2020/04/15 21:47:01 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 2
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 15.05255389213562,
      "total_seconds": 15.287608623504639,
      "stats": {
        "reqs_per_sec": 282.93333333333334
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 45,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 8,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "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": 4244,
        "LambdaFunc.Invoke.ms-avg": 1,
        "Pause().cnt": 3867,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 4244,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 3863,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 3,
        "childExit().ms-avg": 0,
        "fork().cnt": 3,
        "fork().ms-avg": 8,
        "forkRequest.cnt": 3,
        "forkRequest.ms-avg": 7,
        "fresh-cgroup.cnt": 21,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 3,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 3,
        "pull-lambda.ms-avg": 1,
        "web-request.cnt": 4244,
        "web-request.ms-avg": 1
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:47:16 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:16 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:16 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:16 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:16 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:16 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:16 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:47:16 remove worker.pid",
        "2020/04/15 21:47:16 exiting",
        ""
      ]
    },
    {
      "test": "stress_one_lambda",
      "params": {
        "seconds": 15,
        "procs": 8
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": false
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/root/open-lambda/test-registry",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 15.0767822265625,
      "total_seconds": 15.310773134231567,
      "stats": {
        "reqs_per_sec": 237.53333333333333
      },
      "ol-stats": {
        "Channel().cnt": 3,
        "Channel().ms-avg": 0,
        "Create().cnt": 4,
        "Create().ms-avg": 45,
        "Create()/acquire-cgroup.cnt": 4,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 4,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 3,
        "Create()/fork-proc.ms-avg": 7,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "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": 3563,
        "LambdaFunc.Invoke.ms-avg": 2,
        "Pause().cnt": 2854,
        "Pause().ms-avg": 0,
        "ServeHTTP.cnt": 3563,
        "ServeHTTP.ms-avg": 0,
        "Unpause().cnt": 2850,
        "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": 4,
        "web-request.cnt": 3563,
        "web-request.ms-avg": 2
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:47:31 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:31 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:31 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:31 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:31 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:31 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:31 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:47:31 remove worker.pid",
        "2020/04/15 21:47:31 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 1,
        "lambda_count": 100
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": true
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "limits": {
          "procs": 10,
          "mem_mb": 50,
          "swappiness": 0,
          "installer_mem_mb": 250
        },
        "import_cache_tree": "",
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/tmp/tmpy16v8_hn",
        "trace": {
          "cgroups": false,
          "evictor": false,
          "memory": false,
          "package": false
        },
        "sandbox_config": {},
        "server_mode": "lambda",
        "sandbox": "sock",
        "docker_runtime": "",
        "mem_pool_mb": 500
      },
      "seconds": 3.2062745094299316,
      "total_seconds": 3.64129900932312,
      "stats": {
        "reqs_per_sec": 31.18913530783282
      },
      "ol-stats": {
        "Channel().cnt": 100,
        "Channel().ms-avg": 0,
        "Create().cnt": 101,
        "Create().ms-avg": 8,
        "Create()/acquire-cgroup.cnt": 101,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 101,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 100,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 140,
        "Create()/make-root-fs.cnt": 101,
        "Create()/make-root-fs.ms-avg": 0,
        "Destroy().cnt": 154,
        "Destroy().ms-avg": 5,
        "Destroy()/detach-root.cnt": 101,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 101,
        "Destroy()/kill-procs.ms-avg": 3,
        "Destroy()/remove-root.cnt": 101,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 100,
        "LambdaFunc.Invoke.ms-avg": 27,
        "Pause().cnt": 200,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 100,
        "ServeHTTP.ms-avg": 7,
        "Unpause().cnt": 99,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 100,
        "childExit().ms-avg": 3,
        "evict.cnt": 53,
        "evict.ms-avg": 11,
        "fork().cnt": 100,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 100,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 70,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 100,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 100,
        "pull-lambda.ms-avg": 3,
        "web-request.cnt": 100,
        "web-request.ms-avg": 27
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:47:35 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:35 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:35 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:35 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:35 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:35 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:47:35 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:47:35 remove worker.pid",
        "2020/04/15 21:47:35 exiting",
        ""
      ]
    },
    {
      "test": "call_each_once_exec",
      "params": {
        "alloc_mb": 10,
        "lambda_count": 1000
      },
      "pass": true,
      "conf": {
        "features": {
          "import_cache": true,
          "downsize_paused_mem": true,
          "reuse_cgroups": true
        },
        "storage": {
          "root": "private",
          "scratch": "",
          "code": ""
        },
        "worker_dir": "/root/open-lambda/test-dir/worker",
        "registry_cache_ms": 5000,
        "pip_mirror": "",
        "docker_runtime": "",
        "limits": {
          "installer_mem_mb": 250,
          "swappiness": 0,
          "mem_mb": 50,
          "procs": 10
        },
        "worker_port": "5000",
        "SOCK_base_path": "/root/open-lambda/test-dir/lambda",
        "registry": "/tmp/tmp2nixvjff",
        "sandbox_config": {},
        "trace": {
          "evictor": false,
          "package": false,
          "memory": false,
          "cgroups": false
        },
        "import_cache_tree": "",
        "server_mode": "lambda",
        "sandbox": "sock",
        "Pkgs_dir": "/root/open-lambda/test-dir/lambda/packages",
        "mem_pool_mb": 500
      },
      "seconds": 49.805049657821655,
      "total_seconds": 50.380571365356445,
      "stats": {
        "reqs_per_sec": 20.078297002052654
      },
      "ol-stats": {
        "Channel().cnt": 1000,
        "Channel().ms-avg": 0,
        "Create().cnt": 1001,
        "Create().ms-avg": 9,
        "Create()/acquire-cgroup.cnt": 1001,
        "Create()/acquire-cgroup.ms-avg": 0,
        "Create()/acquire-mem.cnt": 1001,
        "Create()/acquire-mem.ms-avg": 0,
        "Create()/fork-proc.cnt": 1000,
        "Create()/fork-proc.ms-avg": 6,
        "Create()/fresh-proc.cnt": 1,
        "Create()/fresh-proc.ms-avg": 141,
        "Create()/make-root-fs.cnt": 1001,
        "Create()/make-root-fs.ms-avg": 2,
        "Destroy().cnt": 1981,
        "Destroy().ms-avg": 7,
        "Destroy()/detach-root.cnt": 1001,
        "Destroy()/detach-root.ms-avg": 0,
        "Destroy()/kill-procs.cnt": 1001,
        "Destroy()/kill-procs.ms-avg": 7,
        "Destroy()/remove-root.cnt": 1001,
        "Destroy()/remove-root.ms-avg": 0,
        "LambdaFunc.Invoke.cnt": 1000,
        "LambdaFunc.Invoke.ms-avg": 45,
        "Pause().cnt": 2000,
        "Pause().ms-avg": 9,
        "ServeHTTP.cnt": 1000,
        "ServeHTTP.ms-avg": 22,
        "Unpause().cnt": 999,
        "Unpause().ms-avg": 0,
        "childExit().cnt": 1000,
        "childExit().ms-avg": 6,
        "evict.cnt": 980,
        "evict.ms-avg": 14,
        "fork().cnt": 1000,
        "fork().ms-avg": 6,
        "forkRequest.cnt": 1000,
        "forkRequest.ms-avg": 5,
        "fresh-cgroup.cnt": 40,
        "fresh-cgroup.ms-avg": 0,
        "move-to-cg-after-fork.cnt": 1000,
        "move-to-cg-after-fork.ms-avg": 0,
        "pull-lambda.cnt": 1000,
        "pull-lambda.ms-avg": 2,
        "web-request.cnt": 1000,
        "web-request.ms-avg": 45
      },
      "errors": [],
      "worker_tail": [
        "2020/04/15 21:48:25 remove /sys/fs/cgroup/freezer/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:48:25 remove /sys/fs/cgroup/hugetlb/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:48:25 remove /sys/fs/cgroup/memory/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:48:25 remove /sys/fs/cgroup/perf_event/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:48:25 remove /sys/fs/cgroup/systemd/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:48:25 remove /sys/fs/cgroup/pids/test-dir-sandboxes [CGROUP POOL test-dir-sandboxes]",
        "2020/04/15 21:48:26 save stats to /root/open-lambda/test-dir/worker/stats.json",
        "2020/04/15 21:48:26 remove worker.pid",
        "2020/04/15 21:48:26 exiting",
        ""
      ]
    }
  ],
  "passed": 18,
  "failed": 0,
  "seconds": 331.6779487133026
}