{"id":10797,"date":"2023-11-28T21:43:57","date_gmt":"2023-11-28T13:43:57","guid":{"rendered":"https:\/\/wx.kaifamiao.info\/?p=10797"},"modified":"2023-12-07T14:57:44","modified_gmt":"2023-12-07T06:57:44","slug":"jvm-zhong-jia-ru-sheng-chan-huan-jingcpu-zhan-yong","status":"publish","type":"post","link":"http:\/\/wx.kaifamiao.info\/index.php\/2023\/11\/28\/jvm-zhong-jia-ru-sheng-chan-huan-jingcpu-zhan-yong\/","title":{"rendered":"JVM\u4e2d\u5047\u5982\u751f\u4ea7\u73af\u5883CPU\u5360\u7528\u8fc7\u9ad8\uff0c\u8bf7\u8c08\u8c08\u4f60\u7684\u5206\u6790\u601d\u8def\u548c\u5b9a\u4f4d\uff1f"},"content":{"rendered":"

\u9ad8CPU\u5360\u7528\u662f\u751f\u4ea7\u73af\u5883\u4e2d\u5e38\u89c1\u7684\u6027\u80fd\u95ee\u9898\u4e4b\u4e00\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5206\u6790\u601d\u8def\u548c\u5b9a\u4f4d\u65b9\u6cd5\uff0c\u5e2e\u52a9\u4f60\u8bca\u65ad\u548c\u89e3\u51b3\u9ad8CPU\u5360\u7528\u7684\u95ee\u9898\uff1a<\/p>\n

    \n
  1. \n\u6536\u96c6\u7ebf\u7a0b\u6808\u4fe1\u606f\uff1a<\/strong> \u4f7f\u7528\u5de5\u5177\u5982jstack\u3001VisualVM\u7b49\uff0c\u6536\u96c6Java\u8fdb\u7a0b\u4e2d\u5404\u4e2a\u7ebf\u7a0b\u7684\u5806\u6808\u4fe1\u606f\u3002\u901a\u8fc7\u5206\u6790\u7ebf\u7a0b\u7684\u72b6\u6001\u548c\u8c03\u7528\u6808\uff0c\u53ef\u4ee5\u627e\u5230\u54ea\u4e9b\u7ebf\u7a0b\u6b63\u5728\u6267\u884c\uff0c\u4ee5\u53ca\u5b83\u4eec\u7684\u6267\u884c\u8def\u5f84\u3002<\/p>\n
    jstack <pid> > thread_dump.txt\n<\/code><\/pre>\n<\/li>\n
  2. \n\u67e5\u770bGC\u65e5\u5fd7\uff1a<\/strong> \u5982\u679c\u9ad8CPU\u5360\u7528\u4e0e\u5783\u573e\u56de\u6536\u6709\u5173\uff0c\u53ef\u4ee5\u67e5\u770bGC\u65e5\u5fd7\uff0c\u4e86\u89e3GC\u7684\u9891\u7387\u548c\u505c\u987f\u65f6\u95f4\u3002\u901a\u8fc7\u8c03\u6574\u5783\u573e\u56de\u6536\u7b56\u7565\u6216\u8c03\u4f18\u5783\u573e\u56de\u6536\u53c2\u6570\uff0c\u53ef\u80fd\u80fd\u591f\u51cf\u5c11\u5bf9CPU\u7684\u5f71\u54cd\u3002<\/p>\n
    -XX:+PrintGCDetails -XX:+PrintGCDateStamps -Xloggc:<gc_log_file>\n<\/code><\/pre>\n<\/li>\n
  3. \n\u6027\u80fd\u5206\u6790\u5de5\u5177\uff1a<\/strong> \u4f7f\u7528\u6027\u80fd\u5206\u6790\u5de5\u5177\u5982VisualVM\u3001YourKit\u3001AsyncProfiler\u7b49\uff0c\u5bf9\u5e94\u7528\u8fdb\u884c\u6027\u80fd\u5206\u6790\u3002\u8fd9\u4e9b\u5de5\u5177\u53ef\u4ee5\u63d0\u4f9b\u65b9\u6cd5\u7ea7\u522b\u7684\u6027\u80fd\u5206\u6790\uff0c\u5e2e\u52a9\u627e\u5230\u70ed\u70b9\u4ee3\u7801\u548c\u8017\u65f6\u64cd\u4f5c\u3002\n<\/li>\n
  4. \n\u68c0\u67e5\u7b2c\u4e09\u65b9\u5e93\uff1a<\/strong> \u5982\u679c\u5e94\u7528\u4f7f\u7528\u4e86\u7b2c\u4e09\u65b9\u5e93\uff0c\u7279\u522b\u662f\u4e00\u4e9b\u53ef\u80fd\u5b58\u5728\u6027\u80fd\u95ee\u9898\u7684\u5e93\uff0c\u53ef\u4ee5\u8003\u8651\u66f4\u65b0\u5230\u6700\u65b0\u7248\u672c\u6216\u8005\u5c1d\u8bd5\u66ff\u6362\u4e3a\u5176\u4ed6\u5e93\uff0c\u4ee5\u89e3\u51b3\u6f5c\u5728\u7684\u6027\u80fd\u74f6\u9888\u3002\n<\/li>\n
  5. \n\u68c0\u67e5\u6570\u636e\u5e93\u8bbf\u95ee\uff1a<\/strong> \u5982\u679c\u5e94\u7528\u6d89\u53ca\u6570\u636e\u5e93\u64cd\u4f5c\uff0c\u9ad8CPU\u5360\u7528\u53ef\u80fd\u4e0e\u6570\u636e\u5e93\u67e5\u8be2\u6216\u66f4\u65b0\u64cd\u4f5c\u6709\u5173\u3002\u68c0\u67e5\u6570\u636e\u5e93\u8fde\u63a5\u6c60\u7684\u914d\u7f6e\u3001\u6162\u67e5\u8be2\u65e5\u5fd7\u7b49\uff0c\u786e\u4fdd\u6570\u636e\u5e93\u8bbf\u95ee\u662f\u9ad8\u6548\u7684\u3002\n<\/li>\n
  6. \n\u68c0\u67e5\u9501\u7ade\u4e89\uff1a<\/strong> \u9ad8CPU\u5360\u7528\u53ef\u80fd\u4e0e\u9501\u7ade\u4e89\u6709\u5173\u3002\u4f7f\u7528\u5de5\u5177\u5982jstack\u3001VisualVM\u7b49\uff0c\u67e5\u770b\u7ebf\u7a0b\u5806\u6808\u4e2d\u662f\u5426\u6709\u9501\u7ade\u4e89\u7684\u8ff9\u8c61\uff0c\u68c0\u67e5\u662f\u5426\u5b58\u5728\u6b7b\u9501\u6216\u957f\u65f6\u95f4\u7684\u9501\u7b49\u5f85\u3002\n<\/li>\n
  7. \n\u76d1\u63a7\u7cfb\u7edf\u8d44\u6e90\uff1a<\/strong> \u4f7f\u7528\u7cfb\u7edf\u76d1\u63a7\u5de5\u5177\uff08\u5982top\u3001htop\uff09\u76d1\u63a7\u7cfb\u7edf\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\uff0c\u68c0\u67e5CPU\u4f7f\u7528\u7387\u662f\u5426\u4e0e\u5e94\u7528\u7684\u9ad8CPU\u5360\u7528\u76f8\u5173\u3002\u5982\u679c\u662fIO\u5bc6\u96c6\u578b\u5e94\u7528\uff0c\u53ef\u80fd\u8fd8\u9700\u8981\u68c0\u67e5\u78c1\u76d8\u548c\u7f51\u7edc\u7684\u60c5\u51b5\u3002\n<\/li>\n
  8. \n\u5e94\u7528\u65e5\u5fd7\uff1a<\/strong> \u67e5\u770b\u5e94\u7528\u65e5\u5fd7\uff0c\u7279\u522b\u662f\u5f02\u5e38\u65e5\u5fd7\uff0c\u4ee5\u6392\u67e5\u662f\u5426\u6709\u5f02\u5e38\u60c5\u51b5\u5bfc\u81f4\u4e86\u9ad8CPU\u5360\u7528\u3002\n<\/li>\n<\/ol>\n
    \u7efc\u5408\u4ee5\u4e0a\u65b9\u6cd5\uff0c\u901a\u5e38\u80fd\u591f\u5b9a\u4f4d\u548c\u89e3\u51b3\u9ad8CPU\u5360\u7528\u7684\u95ee\u9898\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d\uff0c\u53ef\u80fd\u9700\u8981\u591a\u4e2a\u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\uff0c\u9010\u6b65\u6df1\u5165\u5206\u6790\uff0c\u627e\u5230\u95ee\u9898\u7684\u6839\u672c\u539f\u56e0\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u9ad8CPU\u5360\u7528\u662f\u751f\u4ea7\u73af\u5883\u4e2d\u5e38\u89c1\u7684\u6027\u80fd\u95ee\u9898\u4e4b\u4e00\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u5206\u6790\u601d\u8def\u548c\u5b9a\u4f4d\u65b9\u6cd5\uff0c\u5e2e\u52a9\u4f60\u8bca\u65ad\u548c\u89e3\u51b3\u9ad8CPU\u5360\u7528\u7684\u95ee\u9898\uff1a […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[119],"tags":[],"class_list":["post-10797","post","type-post","status-publish","format-standard","hentry","category-jvm"],"_links":{"self":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10797","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/comments?post=10797"}],"version-history":[{"count":2,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10797\/revisions"}],"predecessor-version":[{"id":16898,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/posts\/10797\/revisions\/16898"}],"wp:attachment":[{"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/media?parent=10797"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/categories?post=10797"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/wx.kaifamiao.info\/index.php\/wp-json\/wp\/v2\/tags?post=10797"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}