{"id":18,"date":"2026-01-27T14:21:55","date_gmt":"2026-01-27T06:21:55","guid":{"rendered":"https:\/\/www.9ili.cn\/?p=18"},"modified":"2026-01-27T14:21:55","modified_gmt":"2026-01-27T06:21:55","slug":"%e5%ae%9e%e6%88%98%ef%bc%81%e4%bd%bf%e7%94%a8-%e9%98%bf%e9%87%8c-arthas-%e5%b7%a5%e5%85%b7%e5%88%86%e6%9e%90-cpu-%e9%a3%99%e9%ab%98","status":"publish","type":"post","link":"https:\/\/www.9ili.cn\/index.php\/2026\/01\/27\/%e5%ae%9e%e6%88%98%ef%bc%81%e4%bd%bf%e7%94%a8-%e9%98%bf%e9%87%8c-arthas-%e5%b7%a5%e5%85%b7%e5%88%86%e6%9e%90-cpu-%e9%a3%99%e9%ab%98\/","title":{"rendered":"\u5b9e\u6218\uff01\u4f7f\u7528 \u963f\u91cc Arthas \u5de5\u5177\u5206\u6790 CPU \u98d9\u9ad8"},"content":{"rendered":"

Arthas \u662f\u963f\u91cc\u5f00\u6e90\u7684 Java \u8bca\u65ad\u5de5\u5177\uff0c\u76f8\u6bd4 JDK \u5185\u7f6e\u7684\u8bca\u65ad\u5de5\u5177\uff0c\u8981\u66f4\u4eba\u6027\u5316\uff0c\u5e76\u4e14\u529f\u80fd\u5f3a\u5927\uff0c\u53ef\u4ee5\u5b9e\u73b0\u8bb8\u591a\u95ee\u9898\u7684\u4e00\u952e\u5b9a\u4f4d\uff0c\u800c\u4e14\u53ef\u4ee5\u4e00\u952e\u53cd\u7f16\u8bd1\u67e5\u770b\u6e90\u7801\uff0c\u751a\u81f3\u662f\u76f4\u63a5\u8fdb\u884c\u751f\u4ea7\u4ee3\u7801\u70ed\u4fee\u590d\uff0c\u5b9e\u73b0\u5728\u4e00\u4e2a\u5de5\u5177\u5185\u5feb\u901f\u5b9a\u4f4d\u548c\u4fee\u590d\u95ee\u9898\u7684\u4e00\u7ad9\u5f0f\u670d\u52a1\u3002<\/p>\n

\u4eca\u5929\uff0c\u6211\u5c31\u5e26\u4f60\u4f7f\u7528 Arthas \u5b9a\u4f4d\u4e00\u4e2a CPU \u4f7f\u7528\u9ad8\u7684\u95ee\u9898\uff0c\u7cfb\u7edf\u5b66\u4e60\u4e0b\u8fd9\u4e2a\u5de5\u5177\u7684\u4f7f\u7528\u3002<\/p>\n

\u9996\u5148\uff0c\u4e0b\u8f7d\u5e76\u542f\u52a8 Arthas\uff1a<\/p>\n

curl -O https:\/\/alibaba.github.io\/arthas\/arthas-boot.jar\njava -jar arthas-boot.jar\n<\/code><\/pre>\n
\u542f\u52a8\u540e\uff0c\u76f4\u63a5\u627e\u5230\u6211\u4eec\u8981\u6392\u67e5\u7684\u5730\u65b9 JVM \u8fdb\u7a0b\uff0c\u7136\u540e\u53ef\u4ee5\u770b\u5230 Arthas \u9644\u52a0\u8fdb\u7a0b\u6210\u529f\uff1a<\/p>\n
[INFO] arthas-boot version: 3.1.7\n[INFO] Found existing java process, please choose one and hit RETURN.\n* [1]: 12707\n  [2]: 30724 org.jetbrains.jps.cmdline.Launcher\n  [3]: 30725 org.geekbang.time.commonmistakes.troubleshootingtools.highcpu.HighCPUApplication\n  [4]: 24312 sun.tools.jconsole.JConsole\n  [5]: 26328 org.jetbrains.jps.cmdline.Launcher\n  [6]: 24106 org.netbeans.lib.profiler.server.ProfilerServer\n3\n[INFO] arthas home: \/Users\/zhuye\/.arthas\/lib\/3.1.7\/arthas\n[INFO] Try to attach process 30725\n[INFO] Attach process 30725 success.\n[INFO] arthas-client connect 127.0.0.1 3658\n  ,---.  ,------. ,--------.,--.  ,--.  ,---.   ,---.\n \/  O   |  .--. ''--.  .--'|  '--'  | \/  O   '   .-'\n|  .-.  ||  '--'.'   |  |   |  .--.  ||  .-.  |`.  `-.\n|  | |  ||  |      |  |   |  |  |  ||  | |  |.-'    |\n`--' `--'`--' '--'   `--'   `--'  `--'`--' `--'`-----'\n\nwiki      https:\/\/alibaba.github.io\/arthas\ntutorials https:\/\/alibaba.github.io\/arthas\/arthas-tutorials\nversion   3.1.7\npid       30725\ntime      2020-01-30 15:48:33\n<\/code><\/pre>\n
\u8f93\u51fa help \u547d\u4ee4\uff0c\u53ef\u4ee5\u770b\u5230\u6240\u6709\u652f\u6301\u7684\u547d\u4ee4\u5217\u8868\u3002\u4eca\u5929\uff0c\u6211\u4eec\u4f1a\u7528\u5230 dashboard \u3001thread \u3001jad \u3001watch \u3001ognl \u547d\u4ee4\uff0c\u6765\u5b9a\u4f4d\u8fd9\u4e2a HighCPUApplication \u8fdb\u7a0b\u3002<\/p>\n
\u4f60\u53ef\u4ee5\u901a\u8fc7\u5b98\u65b9\u6587\u6863:https:\/\/arthas.aliyun.com\/doc\/commands.html\uff0c\u67e5\u770b\u8fd9\u4e9b\u547d\u4ee4\u7684\u5b8c\u6574\u4ecb\u7ecd\uff1a<\/p>\n
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dashboard \u547d\u4ee4\u7528\u4e8e\u6574\u4f53\u5c55\u793a\u8fdb\u7a0b\u6240\u6709\u7ebf\u7a0b\u3001\u5185\u5b58\u3001GC \u7b49\u60c5\u51b5\uff0c\u5176\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n
[\u56fe\u7247\u4e0a\u4f20\u5931\u8d25…(image-ecf6af-1650028676968)]<\/p>\n
\u53ef\u4ee5\u770b\u5230\uff0cCPU \u9ad8\u5e76\u4e0d\u662f GC \u5f15\u8d77\u7684\uff0c\u5360\u7528 CPU \u8f83\u591a\u7684\u7ebf\u7a0b\u6709 8 \u4e2a\uff0c\u5176\u4e2d 7 \u4e2a\u662f ForkJoinPool.commonPool\u3002<\/p>\n
ForkJoinPool.commonPool \u662f\u5e76\u884c\u6d41\u7a0b\u9ed8\u8ba4\u4f7f\u7528\u7684\u7ebf\u7a0b\u6c60\u3002<\/p>\n
\u6240\u4ee5\uff0c\u6b64\u6b21 CPU \u9ad8\u7684\u95ee\u9898\uff0c\u5e94\u8be5\u51fa\u73b0\u5728\u67d0\u6bb5\u5e76\u884c\u6d41\u7684\u4ee3\u7801\u4e0a\u3002<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u8981\u67e5\u770b\u6700\u7e41\u5fd9\u7684\u7ebf\u7a0b\u5728\u6267\u884c\u7684\u7ebf\u7a0b\u6808\uff0c\u53ef\u4ee5\u4f7f\u7528 thread -n \u547d\u4ee4\u3002\u8fd9\u91cc\uff0c\u6211\u4eec\u67e5\u770b\u4e0b\u6700\u5fd9\u7684 8 \u4e2a\u7ebf\u7a0b\uff1a<\/p>\n
thread -n 8\n<\/code><\/pre>\n
\u8f93\u51fa\u5982\u4e0b\uff1a<\/p>\n
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\u53ef\u4ee5\u770b\u5230\uff0c\u7531\u4e8e\u8fd9\u4e9b\u7ebf\u7a0b\u90fd\u5728\u5904\u7406 MD5 \u7684\u64cd\u4f5c\uff0c\u6240\u4ee5\u5360\u7528\u4e86\u5927\u91cf\u65f6\u95f4 CPU \u8d44\u6e90\u3002\u6211\u4eec\u5e0c\u671b\u5206\u6790\u51fa\u4ee3\u7801\u4e2d\u54ea\u4e9b\u903b\u8f91\u53ef\u80fd\u4f1a\u6267\u884c\u8fd9\u4e2a\u64cd\u4f5c\uff0c\u6240\u4ee5\u9700\u8981\u4ece\u65b9\u6cd5\u6808\u4e0a\u627e\u51fa\u6211\u4eec\u81ea\u5df1\u5199\u7684\u7c7b\uff0c\u5e76\u91cd\u70b9\u5173\u6ce8\u3002<\/p>\n
\u7531\u4e8e\u4e3b\u7ebf\u7a0b\u4e5f\u53c2\u4e0e\u4e86 ForkJoinPool \u7684\u4efb\u52a1\u5904\u7406\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4e3b\u7ebf\u7a0b\u7684\u6808\u770b\u5230\u9700\u8981\u91cd\u70b9\u5173\u6ce8 org.geekbang.time.commonmistakes.troubleshootingtools.highcpu.HighCPUApplication \u7c7b\u7684 doTask \u65b9\u6cd5\u3002<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u4f7f\u7528 jad \u547d\u4ee4\u76f4\u63a5\u5bf9 HighCPUApplication \u7c7b\u53cd\u7f16\u8bd1\uff1a<\/p>\n
jad org.geekbang.time.commonmistakes.troubleshootingtools.highcpu.HighCPUApplication\n<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u8c03\u7528\u7684\u8def\u5f84\u662f main->task()->doTask()\uff0c\u5f53 doTask \u65b9\u6cd5\u63a5\u6536\u5230\u7684 int \u53c2\u6570\u7b49\u4e8e\u67d0\u4e2a\u5e38\u91cf\u7684\u65f6\u5019\uff0c\u4f1a\u8fdb\u884c 1 \u4e07\u6b21\u7684 MD5 \u64cd\u4f5c\uff0c\u8fd9\u5c31\u662f\u8017\u8d39 CPU \u7684\u6765\u6e90\u3002\u90a3\u4e48\uff0c\u8fd9\u4e2a\u9b54\u6cd5\u503c\u5230\u5e95\u662f\u591a\u5c11\u5462\uff1f<\/p>\n
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image.png<\/div>\n<\/div>\n
\u4f60\u53ef\u80fd\u60f3\u5230\u4e86\uff0c\u901a\u8fc7 jad \u547d\u4ee4\u7ee7\u7eed\u67e5\u770b User \u7c7b\u5373\u53ef\u3002\u8fd9\u91cc\u56e0\u4e3a\u662f Demo\uff0c\u6240\u4ee5\u6211\u6ca1\u6709\u7ed9\u51fa\u5f88\u590d\u6742\u7684\u903b\u8f91\u3002\u5728\u4e1a\u52a1\u903b\u8f91\u5f88\u590d\u6742\u7684\u4ee3\u7801\u4e2d\uff0c\u5224\u65ad\u903b\u8f91\u4e0d\u53ef\u80fd\u8fd9\u4e48\u76f4\u767d\uff0c\u6211\u4eec\u53ef\u80fd\u8fd8\u9700\u8981\u5206\u6790\u51fa doTask \u7684\u201c\u6162\u201d\u4f1a\u6162\u5728\u4ec0\u4e48\u5165\u53c2\u4e0a\u3002<\/p>\n
\u8fd9\u65f6\uff0c\u6211\u4eec\u5c31\u53ef\u4ee5\u4f7f\u7528 watch \u547d\u4ee4\u6765\u89c2\u5bdf\u65b9\u6cd5\u5165\u53c2\u3002\u5982\u4e0b\u547d\u4ee4\uff0c\u8868\u793a\u9700\u8981\u76d1\u63a7\u8017\u65f6\u8d85\u8fc7 100 \u6beb\u79d2\u7684 doTask \u65b9\u6cd5\u7684\u5165\u53c2\uff0c\u5e76\u4e14\u8f93\u51fa\u5165\u53c2\uff0c\u5c55\u5f00 2 \u5c42\u5165\u53c2\u53c2\u6570\uff1a<\/p>\n
watch org.geekbang.time.commonmistakes.troubleshootingtools.highcpu.HighCPUApplication doTask '{params}' '#cost>100' -x 2\n<\/code><\/pre>\n
\u53ef\u4ee5\u770b\u5230\uff0c\u6240\u6709\u8017\u65f6\u8f83\u4e45\u7684 doTask \u65b9\u6cd5\u7684\u5165\u53e3\u90fd\u662f 0\uff0c\u610f\u5473\u7740 User.ADMN_ID \u5e38\u91cf\u5e94\u8be5\u662f 0\u3002<\/p>\n
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\u6700\u540e\uff0c\u6211\u4eec\u4f7f\u7528 ognl \u547d\u4ee4\u6765\u8fd0\u884c\u4e00\u4e2a\u8868\u8fbe\u5f0f\uff0c\u76f4\u63a5\u67e5\u8be2 User \u7c7b\u7684 ADMIN_ID \u9759\u6001\u5b57\u6bb5\u6765\u9a8c\u8bc1\u662f\u4e0d\u662f\u8fd9\u6837\uff0c\u5f97\u5230\u7684\u7ed3\u679c\u679c\u7136\u662f\u8fd9\u6837 0\uff1a<\/p>\n
[arthas@31126]$ ognl '@org.geekbang.time.commonmistakes.troubleshootingtools.highcpu.User@ADMIN_ID'\n@Integer[0]\n<\/code><\/pre>\n
\u9700\u8981\u989d\u5916\u8bf4\u660e\u7684\u662f\uff0c\u7531\u4e8e monitor\u3001trace\u3001watch \u7b49\u547d\u4ee4\u662f\u901a\u8fc7\u5b57\u8282\u7801\u589e\u5f3a\u6280\u672f\u6765\u5b9e\u73b0\u7684\uff0c\u4f1a\u5728\u6307\u5b9a\u7c7b\u7684\u65b9\u6cd5\u4e2d\u63d2\u5165\u4e00\u4e9b\u5207\u9762\u6765\u5b9e\u73b0\u6570\u636e\u7edf\u8ba1\u548c\u89c2\u6d4b\uff0c\u56e0\u6b64\u8bca\u65ad\u7ed3\u675f\u8981\u6267\u884c shutdown \u6765\u8fd8\u539f\u7c7b\u6216\u65b9\u6cd5\u5b57\u8282\u7801\uff0c\u7136\u540e\u9000\u51fa Arthas\u3002<\/p>\n
\u5728\u8fd9\u4e2a\u6848\u4f8b\u4e2d\uff0c\u6211\u4eec\u901a\u8fc7 Arthas \u5de5\u5177\u6392\u67e5\u4e86\u9ad8 CPU \u7684\u95ee\u9898\uff1a<\/p>\n
    \n
  • \u9996\u5148\uff0c\u901a\u8fc7 dashboard + thread \u547d\u4ee4\uff0c\u57fa\u672c\u53ef\u4ee5\u5728\u51e0\u79d2\u949f\u5185\u4e00\u952e\u5b9a\u4f4d\u95ee\u9898\uff0c\u627e\u51fa\u6d88\u8017 CPU \u6700\u591a\u7684\u7ebf\u7a0b\u548c\u65b9\u6cd5\u6808\uff1b<\/li>\n
  • \u7136\u540e\uff0c\u76f4\u63a5 jad \u53cd\u590d\u7f16\u8bd1\u76f8\u5173\u4ee3\u7801\uff0c\u6765\u786e\u8ba4\u6839\u56e0\uff1b<\/li>\n
  • \u6b64\u5916\uff0c\u5982\u679c\u8c03\u7528\u5165\u53c2\u4e0d\u660e\u786e\u7684\u8bdd\uff0c\u53ef\u4ee5\u4f7f\u7528 watch \u89c2\u5bdf\u65b9\u6cd5\u5165\u53c2\uff0c\u5e76\u6839\u636e\u65b9\u6cd5\u6267\u884c\u65f6\u95f4\u6765\u8fc7\u6ee4\u6162\u8bf7\u6c42\u7684\u5165\u53c2\u3002<\/li>\n<\/ul>\n
    \u53ef\u89c1\uff0c\u4f7f\u7528 Arthas \u6765\u5b9a\u4f4d\u751f\u4ea7\u95ee\u9898\u6839\u672c\u7528\u4e0d\u7740\u539f\u59cb\u4ee3\u7801\uff0c\u4e5f\u7528\u4e0d\u7740\u901a\u8fc7\u589e\u52a0\u65e5\u5fd7\u6765\u5e2e\u52a9\u6211\u4eec\u5206\u6790\u5165\u53c2\uff0c\u4e00\u4e2a\u5de5\u5177\u5373\u53ef\u5b8c\u6210\u5b9a\u4f4d\u95ee\u9898\u3001\u5206\u6790\u95ee\u9898\u7684\u5168\u5957\u6d41\u7a0b\u3002<\/p>\n
    \u5bf9\u4e8e\u5e94\u7528\u6545\u969c\u5206\u6790\uff0c\u9664\u4e86\u963f\u91cc Arthas \u4e4b\u5916\uff0c\u8fd8\u53ef\u4ee5\u5173\u6ce8\u53bb\u54ea\u513f\u7684Bistoury \uff1ahttps:\/\/github.com\/qunarcorp\/bistoury\u5de5\u5177\uff0c\u5176\u63d0\u4f9b\u4e86\u53ef\u89c6\u5316\u754c\u9762\uff0c\u5e76\u4e14\u53ef\u4ee5\u9488\u5bf9\u591a\u53f0\u673a\u5668\u8fdb\u884c\u7ba1\u7406\uff0c\u751a\u81f3\u63d0\u4f9b\u4e86\u5728\u7ebf\u65ad\u70b9\u8c03\u8bd5\u7b49\u529f\u80fd\uff0c\u6a21\u62df IDE \u7684\u8c03\u8bd5\u4f53\u9a8c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Arthas \u662f\u963f\u91cc\u5f00\u6e90\u7684 Java \u8bca\u65ad\u5de5\u5177\uff0c\u76f8\u6bd4 JDK \u5185\u7f6e\u7684\u8bca\u65ad\u5de5\u5177\uff0c\u8981\u66f4\u4eba\u6027\u5316\uff0c\u5e76\u4e14\u529f\u80fd\u5f3a\u5927\uff0c\u53ef\u4ee5\u5b9e […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-18","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/posts\/18","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/comments?post=18"}],"version-history":[{"count":1,"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/posts\/18\/revisions"}],"predecessor-version":[{"id":24,"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/posts\/18\/revisions\/24"}],"wp:attachment":[{"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/media?parent=18"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/categories?post=18"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.9ili.cn\/index.php\/wp-json\/wp\/v2\/tags?post=18"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}