{"id":99,"date":"2019-11-26T03:26:25","date_gmt":"2019-11-26T03:26:25","guid":{"rendered":"http:\/\/www.betterit360.com\/?p=99"},"modified":"2019-11-26T03:26:25","modified_gmt":"2019-11-26T03:26:25","slug":"java%e8%bf%9b%e7%a8%8bcpu%e4%bd%bf%e7%94%a8%e7%8e%87%e9%ab%98%e9%97%ae%e9%a2%98%e6%8e%92%e6%9f%a5%e6%ad%a5%e9%aa%a4","status":"publish","type":"post","link":"http:\/\/www.betterit360.com\/?p=99","title":{"rendered":"Java\u8fdb\u7a0bCPU\u4f7f\u7528\u7387\u9ad8\u95ee\u9898\u6392\u67e5\u6b65\u9aa4"},"content":{"rendered":"\n<p> java\u5e94\u7528CPU\u4f7f\u7528\u7387\u4e00\u76f4\u5f88\u9ad8\uff0c\u7ecf\u5e38\u8fbe\u5230100%\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u6392\u67e5\u89e3\u51b3\u3002<\/p>\n\n\n\n<p><strong>\u65b9\u6cd5\u4e00\uff1a<\/strong><\/p>\n\n\n\n<p>1.jps \u83b7\u53d6Java\u8fdb\u7a0b\u7684PID\u3002<\/p>\n\n\n\n<p>2.jstack pid >> java.txt \u5bfc\u51faCPU\u5360\u7528\u9ad8\u8fdb\u7a0b\u7684\u7ebf\u7a0b\u6808\u3002<\/p>\n\n\n\n<p>3.top -H -p PID \u67e5\u770b\u5bf9\u5e94\u8fdb\u7a0b\u7684\u54ea\u4e2a\u7ebf\u7a0b\u5360\u7528CPU\u8fc7\u9ad8\u3002<\/p>\n\n\n\n<p>4.echo \u201cobase=16; PID\u201d | bc \u5c06\u7ebf\u7a0b\u7684PID\u8f6c\u6362\u4e3a16\u8fdb\u5236,\u5927\u5199\u8f6c\u6362\u4e3a\u5c0f\u5199\u3002<\/p>\n\n\n\n<p>5.\u5728\u7b2c\u4e8c\u6b65\u5bfc\u51fa\u7684Java.txt\u4e2d\u67e5\u627e\u8f6c\u6362\u6210\u4e3a16\u8fdb\u5236\u7684\u7ebf\u7a0bPID\uff0c\u627e\u5230\u5bf9\u5e94\u7684\u7ebf\u7a0b\u6808\u3002<\/p>\n\n\n\n<p>6.\u5206\u6790\u8d1f\u8f7d\u9ad8\u7684\u7ebf\u7a0b\u6808\u90fd\u662f\u4ec0\u4e48\u4e1a\u52a1\u64cd\u4f5c\uff0c\u4f18\u5316\u7a0b\u5e8f\u5e76\u5904\u7406\u95ee\u9898\u3002<br><\/p>\n\n\n\n<p><strong>\u65b9\u6cd5\u4e8c\uff1a<\/strong><\/p>\n\n\n\n<p>1.\u4f7f\u7528top \u5b9a\u4f4d\u5230\u5360\u7528CPU\u9ad8\u7684\u8fdb\u7a0bPID<\/p>\n\n\n\n<p>top<\/p>\n\n\n\n<p>2.\u83b7\u53d6\u7ebf\u7a0b\u4fe1\u606f\uff0c\u5e76\u627e\u5230\u5360\u7528CPU\u9ad8\u7684\u7ebf\u7a0b<\/p>\n\n\n\n<p>ps -mp pid -o THREAD,tid,time | sort -rn<\/p>\n\n\n\n<p>3.\u5c06\u9700\u8981\u7684\u7ebf\u7a0bID\u8f6c\u6362\u4e3a16\u8fdb\u5236\u683c\u5f0f<\/p>\n\n\n\n<p>printf &#8220;%x\\n&#8221; tid<\/p>\n\n\n\n<p>4.\u6253\u5370\u7ebf\u7a0b\u7684\u5806\u6808\u4fe1\u606f<\/p>\n\n\n\n<p>jstack pid |grep tid -A 30 <\/p>\n","protected":false},"excerpt":{"rendered":"<p>java\u5e94\u7528CPU\u4f7f\u7528\u7387\u4e00\u76f4\u5f88\u9ad8\uff0c\u7ecf\u5e38\u8fbe\u5230100%\uff0c\u53ef\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u6392\u67e5\u89e3\u51b3\u3002 \u65b9\u6cd5\u4e00\uff1a 1.jps \u83b7\u53d6Jav &hellip; <a href=\"http:\/\/www.betterit360.com\/?p=99\" class=\"more-link\">\u7ee7\u7eed\u9605\u8bfb<span class=\"screen-reader-text\">\u201cJava\u8fdb\u7a0bCPU\u4f7f\u7528\u7387\u9ad8\u95ee\u9898\u6392\u67e5\u6b65\u9aa4\u201d<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"_links":{"self":[{"href":"http:\/\/www.betterit360.com\/index.php?rest_route=\/wp\/v2\/posts\/99"}],"collection":[{"href":"http:\/\/www.betterit360.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.betterit360.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.betterit360.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.betterit360.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=99"}],"version-history":[{"count":0,"href":"http:\/\/www.betterit360.com\/index.php?rest_route=\/wp\/v2\/posts\/99\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.betterit360.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=99"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.betterit360.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=99"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.betterit360.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=99"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}