{"id":39958,"date":"2025-05-26T20:31:15","date_gmt":"2025-05-26T12:31:15","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/39958.html"},"modified":"2025-05-26T20:31:15","modified_gmt":"2025-05-26T12:31:15","slug":"horain%e4%ba%91-%e6%9c%8d%e5%8a%a1%e5%99%a8docker-oom-rss%e9%ab%98%e9%97%ae%e9%a2%98%e6%8e%92%e6%9f%a5%e6%80%9d%e8%b7%af","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/39958.html","title":{"rendered":"HoRain\u4e91--\u670d\u52a1\u5668Docker OOM RSS\u9ad8\u95ee\u9898\u6392\u67e5\u601d\u8def"},"content":{"rendered":"<\/p>\n

\u00a0\u00a0\"\"<\/p>\n

🎬 HoRain \u4e91\u5c0f\u52a9\u624b：\u4e2a\u4eba\u4e3b\u9875<\/p>\n

\u26fa\ufe0f\u751f\u6d3b\u7684\u7406\u60f3，\u5c31\u662f\u4e3a\u4e86\u7406\u60f3\u7684\u751f\u6d3b!<\/p>\n

\n

\u26f3\ufe0f \u63a8\u8350<\/h4>\n

\u524d\u4e9b\u5929\u53d1\u73b0\u4e86\u4e00\u4e2a\u8d85\u68d2\u7684\u670d\u52a1\u5668\u8d2d\u4e70\u7f51\u7ad9，\u6027\u4ef7\u6bd4\u8d85\u9ad8，\u5927\u5185\u5b58\u8d85\u5212\u7b97！\u5fcd\u4e0d\u4f4f\u5206\u4eab\u4e00\u4e0b\u7ed9\u5927\u5bb6\u3002\u70b9\u51fb\u8df3\u8f6c\u5230\u7f51\u7ad9\u3002<\/p>\n

\u76ee\u5f55<\/p>\n

\u26f3\ufe0f \u63a8\u8350<\/p>\n

1. \u5b9e\u65f6\u8d44\u6e90\u76d1\u63a7<\/p>\n

2. \u5b9a\u4f4d\u95ee\u9898\u5bb9\u5668<\/p>\n

2.1 \u67e5\u770b\u5bb9\u5668\u5185\u5b58\u4f7f\u7528\u8be6\u60c5<\/p>\n

2.2 \u68c0\u67e5OOM\u4e8b\u4ef6\u8bb0\u5f55<\/p>\n

3. \u5bb9\u5668\u5185\u8fdb\u7a0b\u5206\u6790<\/p>\n

3.1 \u8fdb\u5165\u5bb9\u5668\u67e5\u770b\u8fdb\u7a0b<\/p>\n

3.2 \u4f7f\u7528nsenter\u76f4\u63a5\u5206\u6790<\/p>\n

4. \u9ad8\u7ea7\u5185\u5b58\u5206\u6790\u5de5\u5177<\/p>\n

4.1 \u4f7f\u7528ebpf\u5de5\u5177<\/p>\n

4.2 Java\u5e94\u7528\u4e13\u9879\u68c0\u67e5<\/p>\n

5. \u914d\u7f6e\u4f18\u5316\u5efa\u8bae<\/p>\n

5.1 \u5185\u5b58\u9650\u5236\u7b56\u7565<\/p>\n

5.2 \u5e94\u7528\u5c42\u4f18\u5316<\/p>\n

6. \u76d1\u63a7\u65b9\u6848\u90e8\u7f72<\/p>\n

7. \u5178\u578b\u95ee\u9898\u5904\u7406\u6d41\u7a0b<\/p>\n

8. \u5185\u6838\u53c2\u6570\u8c03\u4f18<\/p>\n

\n

\"\"<\/p>\n

\u00a0 <\/p>\n

\n

1. \u5b9e\u65f6\u8d44\u6e90\u76d1\u63a7<\/h4>\n

# \u67e5\u770b\u6240\u6709\u5bb9\u5668\u5b9e\u65f6\u8d44\u6e90\u5360\u7528
\ndocker stats –no-stream –format "table {{.Name}}\\\\t{{.CPUPerc}}\\\\t{{.MemUsage}}\\\\t{{.MemPerc}}"<\/p>\n

# \u663e\u793a\u5bb9\u5668\u5185\u5b58\u9650\u5236
\ndocker inspect –format='{{.Name}} {{.HostConfig.Memory}}' $(docker ps -q)<\/p>\n

\n

2. \u5b9a\u4f4d\u95ee\u9898\u5bb9\u5668<\/h4>\n

2.1 \u67e5\u770b\u5bb9\u5668\u5185\u5b58\u4f7f\u7528\u8be6\u60c5<\/h5>\n

# \u83b7\u53d6\u5bb9\u5668\u5185\u5b58\u8be6\u60c5（\u9700cgroup\u652f\u6301）
\ncat \/sys\/fs\/cgroup\/memory\/docker\/<container-id>\/memory.stat<\/p>\n

\u5173\u6ce8\u5173\u952e\u6307\u6807：<\/p>\n

rss # \u7269\u7406\u5185\u5b58\u5360\u7528
\nswap # \u4ea4\u6362\u5206\u533a\u4f7f\u7528
\ncache # \u9875\u9762\u7f13\u5b58
\nhierarchical_memory_limit # \u5185\u5b58\u9650\u5236\u503c
\noom # OOM\u53d1\u751f\u6b21\u6570<\/p>\n

2.2 \u68c0\u67e5OOM\u4e8b\u4ef6\u8bb0\u5f55<\/h5>\n

# \u67e5\u770b\u5185\u6838\u65e5\u5fd7
\ndmesg -T | grep -i 'killed process'<\/p>\n

# \u67e5\u770b\u7cfb\u7edf\u65e5\u5fd7
\njournalctl -k –since "1 hour ago" | grep -E 'oom|kill'<\/p>\n

\n

3. \u5bb9\u5668\u5185\u8fdb\u7a0b\u5206\u6790<\/h4>\n

3.1 \u8fdb\u5165\u5bb9\u5668\u67e5\u770b\u8fdb\u7a0b<\/h5>\n

docker exec -it <container-name> sh<\/p>\n

# \u5b89\u88c5procps（\u5982\u5bb9\u5668\u65e0top\u547d\u4ee4）
\napt-get update && apt-get install procps<\/p>\n

# \u67e5\u770b\u8fdb\u7a0b\u5185\u5b58\u6392\u884c
\nps -eo pid,rss,cmd –sort -rss | head -n 10<\/p>\n

3.2 \u4f7f\u7528nsenter\u76f4\u63a5\u5206\u6790<\/h5>\n

# \u83b7\u53d6\u5bb9\u5668PID
\ndocker inspect -f '{{.State.Pid}}' <container-name><\/p>\n

# \u8fdb\u5165\u5bb9\u5668\u547d\u540d\u7a7a\u95f4
\nnsenter -t <pid> -m -p<\/p>\n

# \u73b0\u5728\u53ef\u8fd0\u884c\u5bbf\u4e3b\u673a\u7684top\/htop\u5de5\u5177
\nhtop –filter=UID:<container-user-id><\/p>\n

\n

4. \u9ad8\u7ea7\u5185\u5b58\u5206\u6790\u5de5\u5177<\/h4>\n

4.1 \u4f7f\u7528ebpf\u5de5\u5177<\/h5>\n

# \u8ffd\u8e2a\u5bb9\u5668\u5185\u5b58\u5206\u914d（\u9700Linux 4.9+）
\nsudo \/usr\/share\/bcc\/tools\/memleak -c <container-id><\/p>\n

4.2 Java\u5e94\u7528\u4e13\u9879\u68c0\u67e5<\/h5>\n

# \u68c0\u67e5JVM\u5806\u914d\u7f6e
\ndocker exec <container> jcmd 1 VM.flags | grep MaxHeapSize<\/p>\n

# \u751f\u6210\u5806\u8f6c\u50a8
\ndocker exec <container> jmap -dump:live,format=b,file=\/tmp\/heap.hprof 1
\ndocker cp <container>:\/tmp\/heap.hprof .<\/p>\n

\n

5. \u914d\u7f6e\u4f18\u5316\u5efa\u8bae<\/h4>\n

5.1 \u5185\u5b58\u9650\u5236\u7b56\u7565<\/h5>\n

# \u542f\u52a8\u5bb9\u5668\u65f6\u8bbe\u7f6e\u786c\u9650\u5236
\ndocker run -m 2g –memory-swap 2g –oom-kill-disable=false …<\/p>\n

# \u8c03\u6574Swappiness（0-100，\u8d8a\u4f4e\u8d8a\u5c11\u7528swap）
\necho 10 > \/sys\/fs\/cgroup\/memory\/docker\/<container-id>\/memory.swappiness<\/p>\n

5.2 \u5e94\u7528\u5c42\u4f18\u5316<\/h5>\n\n\u5e94\u7528\u7c7b\u578b\u5173\u952e\u53c2\u6570\u63a8\u8350\u914d\u7f6e\u793a\u4f8b<\/tr>\n\n\n\n\n\n
Java<\/td>\n-Xmx, -XX:MaxMetaspaceSize<\/td>\n-Xmx1g -XX:MaxMetaspaceSize=256m<\/td>\n<\/tr>\n
Node.js<\/td>\n–max-old-space-size<\/td>\nnode –max-old-space-size=2048<\/td>\n<\/tr>\n
Python<\/td>\n\u5bf9\u8c61\u7f13\u5b58\u673a\u5236\u4f18\u5316<\/td>\n\u4f7f\u7528__slots__\u51cf\u5c11\u5185\u5b58\u5360\u7528<\/td>\n<\/tr>\n
MySQL<\/td>\ninnodb_buffer_pool_size<\/td>\n\u8bbe\u7f6e\u4e3a\u7269\u7406\u5185\u5b58\u768450-70%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n
\n

6. \u76d1\u63a7\u65b9\u6848\u90e8\u7f72<\/h4>\n

# Prometheus + Grafana\u76d1\u63a7\u914d\u7f6e\u793a\u4f8b
\n– job_name: 'docker'
\n static_configs:
\n – targets: ['docker-host:9323']
\n metrics_path: \/metrics<\/p>\n

\u5173\u952e\u76d1\u63a7\u6307\u6807：<\/p>\n

container_memory_usage_bytes{container_label_com_docker_compose_service="app"}
\ncontainer_memory_failcnt # \u5185\u5b58\u8d85\u9650\u6b21\u6570
\ncontainer_memory_swap # Swap\u4f7f\u7528\u91cf<\/p>\n

\n

7. \u5178\u578b\u95ee\u9898\u5904\u7406\u6d41\u7a0b<\/h4>\n
  • \u7a81\u53d1OOM：\u68c0\u67e5\u5185\u5b58\u9650\u5236\u662f\u5426\u8fc7\u5c0f \u2192 \u5206\u6790\u5e94\u7528\u5185\u5b58\u9700\u6c42 \u2192 \u8c03\u6574-m\u53c2\u6570<\/li>\n
  • \u6e10\u8fdb\u5f0fRSS\u589e\u957f：\u4f7f\u7528valgrind\u68c0\u6d4b\u5185\u5b58\u6cc4\u6f0f \u2192 \u4f18\u5316\u4ee3\u7801\/\u914d\u7f6e<\/li>\n
  • Swap\u6ee5\u7528：\u964d\u4f4ememory.swappiness \u2192 \u589e\u52a0\u7269\u7406\u5185\u5b58 \u2192 \u4f18\u5316\u5e94\u7528\u7f13\u5b58\u673a\u5236<\/li>\n
  • \u7f13\u5b58\u5806\u79ef：\u8c03\u6574\u5e94\u7528\u7f13\u5b58\u7b56\u7565 \u2192 \u589e\u52a0\u5185\u5b58 \u2192 \u4f7f\u7528echo 3 > \/proc\/sys\/vm\/drop_caches\u5b9a\u671f\u6e05\u7406<\/li>\n
    \n

    8. \u5185\u6838\u53c2\u6570\u8c03\u4f18<\/h4>\n

    # \u9632\u6b62\u7cfb\u7edf\u5185\u5b58\u8017\u5c3d（\u5efa\u8bae\u503c：0-100）
    \nsysctl -w vm.overcommit_memory=1<\/p>\n

    # \u8c03\u6574OOM Killer\u6743\u91cd（-1000\u52301000，\u503c\u8d8a\u4f4e\u8d8a\u4e0d\u6613\u88ab\u6740）
    \necho -500 > \/proc\/<pid>\/oom_score_adj<\/p>\n

    \n

    \u901a\u8fc7\u4ee5\u4e0a\u6b65\u9aa4\u53ef\u7cfb\u7edf\u5316\u8bca\u65ad\u5185\u5b58\u95ee\u9898，\u5efa\u8bae\u7ed3\u5408\u76d1\u63a7\u7cfb\u7edf\u5efa\u7acb\u957f\u671f\u8d8b\u52bf\u89c2\u5bdf\u3002\u5bf9\u4e8e\u5173\u952e\u4e1a\u52a1\u5bb9\u5668，\u5efa\u8bae\u914d\u7f6e–oom-kill-disable\u65f6\u540c\u65f6\u8bbe\u7f6e\u5408\u7406\u7684-m\u9650\u5236\u3002<\/p>\n

    \"\"<\/p>\n

    \u2764\ufe0f\u2764\ufe0f\u2764\ufe0f\u672c\u4eba\u6c34\u5e73\u6709\u9650，\u5982\u6709\u7eb0\u6f0f，\u6b22\u8fce\u5404\u4f4d\u5927\u4f6c\u8bc4\u8bba\u6279\u8bc4\u6307\u6b63！😄😄😄<\/p>\n

    💘💘💘\u5982\u679c\u89c9\u5f97\u8fd9\u7bc7\u6587\u5bf9\u4f60\u6709\u5e2e\u52a9\u7684\u8bdd，\u4e5f\u8bf7\u7ed9\u4e2a\u70b9\u8d5e\u3001\u6536\u85cf\u4e0b\u5427，\u975e\u5e38\u611f\u8c22!👍 👍 👍<\/p>\n

    🔥🔥🔥Stay Hungry Stay Foolish \u9053\u963b\u4e14\u957f,\u884c\u5219\u5c06\u81f3,\u8ba9\u6211\u4eec\u4e00\u8d77\u52a0\u6cb9\u5427！🌙🌙🌙<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

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