node.js - 不使用 `--max-old-space-size` 标志时，可用内存的默认值是多少？

问题描述

节点：12.16.2

尝试找出为什么在具有内存限制的 docker 容器中运行的节点应用程序在on时512mb失败，以及如果将限制增加到大约时失败。看起来只有 50% 的空间分配给老一代对象，但我找不到任何关于这种行为的文档。JavaScript heap out of memory256mb1500mb700mb

将旧空间大小设置为总可用内存的 70% 左右是否正确（剩余空间是否足以用于其他 v8 内存部分）？

错误日志

<--- Last few GCs --->

[1:0x565508ac6740]    26332 ms: Mark-sweep 255.3 (257.9) -> 254.3 (257.3) MB, 85.7 / 0.0 ms  (+ 65.2 ms in 24 steps since start of marking, biggest step 6.6 ms, walltime since start of marking 162 ms) (average mu = 0.239, current mu = 0.259) allocation fa[1:0x565508ac6740]    26447 ms: Mark-sweep 255.6 (258.1) -> 253.6 (256.3) MB, 112.6 / 0.0 ms  (average mu = 0.159, current mu = 0.021) allocation failure scavenge might not succeed


<--- JS stacktrace --->

==== JS stack trace =========================================

    0: ExitFrame [pc: 0x565505bea959]
    1: StubFrame [pc: 0x565505beb82d]
Security context: 0x229e3f6008d1 <JSObject>
    2: /* anonymous */(aka /* anonymous */) [0x278bb3a93ad9] [/app/server.js:~1] [pc=0x180e9c58e6b7](this=0x3479357404b1 <undefined>,0x02f1a1a468a9 <String[30]:  defer="defer" charset="utf-8">,0x347935743389 <String[#9]: anonymous>,0x14f217f67ed9 <String[#11]: crossorigin>)
    3: /* anonymous */(aka /* anonymous */) [0x...

FATAL ERROR: Ineffective mark-compacts near heap limit Allocation failed - JavaScript heap out of memory

节点报告

{
  "header": {
    "reportVersion": 2,
    "event": "Allocation failed - JavaScript heap out of memory",
    "trigger": "FatalError",
    "filename": "report.20200929.110012.1.0.001.json",
    "dumpEventTime": "2020-09-29T11:00:12Z",
    "dumpEventTimeStamp": "1601377212975",
    "processId": 1,
    "threadId": null,
    "cwd": "/app",
    "commandLine": [
      "node",
      "--max-http-header-size=80000",
      "--inspect=0.0.0.0",
      "/app/server.js"
    ],
    "nodejsVersion": "v12.16.2",
    "wordSize": 64,
    "arch": "x64",
    "platform": "linux",
    "componentVersions": {
      "node": "12.16.2",
      "v8": "7.8.279.23-node.34",
      "uv": "1.34.2",
      "zlib": "1.2.11",
      "brotli": "1.0.7",
      "ares": "1.15.0",
      "modules": "72",
      "nghttp2": "1.40.0",
      "napi": "5",
      "llhttp": "2.0.4",
      "http_parser": "2.9.3",
      "openssl": "1.1.1e",
      "cldr": "36.0",
      "icu": "65.1",
      "tz": "2019c",
      "unicode": "12.1"
    },
    "release": {
      "name": "node",
      "lts": "Erbium",
      "headersUrl": "https://unofficial-builds.nodejs.org/download/release/v12.16.2/node-v12.16.2-headers.tar.gz",
      "sourceUrl": "https://unofficial-builds.nodejs.org/download/release/v12.16.2/node-v12.16.2.tar.gz"
    },
    "osName": "Linux",
    "osRelease": "4.19.76-linuxkit",
    "osVersion": "#1 SMP Tue May 26 11:42:35 UTC 2020",
    "osMachine": "x86_64",
    "cpus": [
      {
        "model": "Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz",
        "speed": 2208,
        "user": 7626100,
        "nice": 0,
        "sys": 3549100,
        "idle": 3029580300,
        "irq": 0
      },
      {
        "model": "Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz",
        "speed": 2208,
        "user": 7502400,
        "nice": 0,
        "sys": 3600100,
        "idle": 3030348500,
        "irq": 0
      }
    ],
    "networkInterfaces": [
      {
        "name": "lo",
        "internal": true,
        "mac": "00:00:00:00:00:00",
        "address": "127.0.0.1",
        "netmask": "255.0.0.0",
        "family": "IPv4"
      },
      {
        "name": "eth0",
        "internal": false,
        "mac": "02:42:ac:11:00:02",
        "address": "172.17.0.2",
        "netmask": "255.255.0.0",
        "family": "IPv4"
      }
    ],
    "host": "1fcf963ff82d"
  },
  "javascriptStack": {
    "message": "No stack.",
    "stack": [
      "Unavailable."
    ]
  },
  "nativeStack": [
  ],
  "javascriptHeap": {
    "totalMemory": 269869056,
    "totalCommittedMemory": 268494816,
    "usedMemory": 265315384,
    "availableMemory": 3780432,
    "memoryLimit": 271581184,
    "heapSpaces": {
      "read_only_space": {
        "memorySize": 262144,
        "committedMemory": 33088,
        "capacity": 32808,
        "used": 32808,
        "available": 0
      },
      "new_space": {
        "memorySize": 2097152,
        "committedMemory": 1043808,
        "capacity": 1047456,
        "used": 26608,
        "available": 1020848
      },
      "old_space": {
        "memorySize": 150872064,
        "committedMemory": 150868648,
        "capacity": 149710672,
        "used": 149710672,
        "available": 0
      },
      "code_space": {
        "memorySize": 2002944,
        "committedMemory": 1914816,
        "capacity": 1783680,
        "used": 1783680,
        "available": 0
      },
      "map_space": {
        "memorySize": 2625536,
        "committedMemory": 2625240,
        "capacity": 2217840,
        "used": 2217840,
        "available": 0
      },
      "large_object_space": {
        "memorySize": 111386624,
        "committedMemory": 111386624,
        "capacity": 110999232,
        "used": 110999232,
        "available": 0
      },
      "code_large_object_space": {
        "memorySize": 622592,
        "committedMemory": 622592,
        "capacity": 544544,
        "used": 544544,
        "available": 0
      },
      "new_large_object_space": {
        "memorySize": 0,
        "committedMemory": 0,
        "capacity": 1047456,
        "used": 0,
        "available": 1047456
      }
    }
  },
  "resourceUsage": {
    "userCpuSeconds": 14.3448,
    "kernelCpuSeconds": 0.727153,
    "cpuConsumptionPercent": 57.9692,
    "maxRss": 369463296,
    "pageFaults": {
      "IORequired": 35,
      "IONotRequired": 154703
    },
    "fsActivity": {
      "reads": 10272,
      "writes": 2976
    }
  },
  "uvthreadResourceUsage": {
    "userCpuSeconds": 9.15498,
    "kernelCpuSeconds": 0.423264,
    "cpuConsumptionPercent": 36.8394,
    "fsActivity": {
      "reads": 9192,
      "writes": 2976
    }
  },
  "libuv": [
  ],
  "workers": [
  ],
  "environmentVariables": {
    "STATIC_PREFIX": "http://localhost:4000/static/",
    "NODE_VERSION": "12.16.2",
    "HOSTNAME": "1fcf963ff82d",
    "YARN_VERSION": "1.22.4",
    "SHLVL": "1",
    "HOME": "/root",
    "PATH": "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
    "DEV_STATIC": "true",
    "PWD": "/app",
    "NODE_ENV": "production"
  },
  "userLimits": {
    "core_file_size_blocks": {
      "soft": 0,
      "hard": "unlimited"
    },
    "data_seg_size_kbytes": {
      "soft": "unlimited",
      "hard": "unlimited"
    },
    "file_size_blocks": {
      "soft": "unlimited",
      "hard": "unlimited"
    },
    "max_locked_memory_bytes": {
      "soft": 83968000,
      "hard": 83968000
    },
    "max_memory_size_kbytes": {
      "soft": "unlimited",
      "hard": "unlimited"
    },
    "open_files": {
      "soft": 1048576,
      "hard": 1048576
    },
    "stack_size_bytes": {
      "soft": 8388608,
      "hard": "unlimited"
    },
    "cpu_time_seconds": {
      "soft": "unlimited",
      "hard": "unlimited"
    },
    "max_user_processes": {
      "soft": "unlimited",
      "hard": "unlimited"
    },
    "virtual_memory_kbytes": {
      "soft": "unlimited",
      "hard": "unlimited"
    }
  },
  "sharedObjects": [
    "/usr/local/bin/node",
    "/usr/lib/libstdc++.so.6",
    "/usr/lib/libgcc_s.so.1",
    "/lib/ld-musl-x86_64.so.1"
  ]
}

标签： node.jsmemoryv8

node.js - 不使用 `--max-old-space-size` 标志时，可用内存的默认值是多少？

问题描述

解决方案

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