[vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n
\u4f5c\u70ba\u4e00\u500b\u9999\u6e2f\u4f3a\u670d\u5668<\/a><\/strong>\u7528\u6236\uff0c\u4f60\u53ef\u80fd\u6703\u9047\u5230\u4e00\u4e9b CPU \u65b9\u9762\u7684\u554f\u984c\u3002\u7576\u6211\u5011\u7684\u8cc7\u6599\u5e73\u53f0\u4f3a\u670d\u5668\u7684CPU<\/a><\/strong>\u5229\u7528\u7387\u9054\u5230\u9a5a\u4eba\u7684 98.94%\uff0c\u4e26\u9577\u6642\u9593\u4fdd\u6301\u5728 70% \u4ee5\u4e0a\u6642\uff0c\u770b\u8d77\u4f86\u50cf\u662f\u9700\u8981\u64f4\u5bb9\u7684\u786c\u9ad4\u8cc7\u6e90\u74f6\u9838\u3002\u7136\u800c\uff0c\u4ed4\u7d30\u8003\u616e\u5f8c\uff0c\u6211\u5011\u7684\u696d\u52d9\u7cfb\u7d71\u4e26\u4e0d\u662f\u9ad8\u4f75\u767c\u6216 CPU \u5bc6\u96c6\u578b\u61c9\u7528\u3002\u5229\u7528\u7387\u904e\u65bc\u6975\u7aef\uff0c\u4e0d\u61c9\u8a72\u9019\u9ebc\u5feb\u5c31\u9054\u5230\u786c\u9ad4\u74f6\u9838\u3002\u696d\u52d9\u4ee3\u78bc\u908f\u8f2f\u7684\u67d0\u500b\u5730\u65b9\u4e00\u5b9a\u5b58\u5728\u554f\u984c\u3002<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n 2.1 \u78ba\u5b9a\u9ad8\u8ca0\u8f09\u9032\u7a0b\u7684 PID<\/strong><\/p>\n \u9996\u5148\uff0c\u767b\u5165\u4f3a\u670d\u5668\uff0c\u4f7f\u7528 \u901a\u904e\u89c0\u5bdf load average \u548c\u8ca0\u8f09\u8a55\u4f30\u6a19\u6e96\uff088\u6838\uff09\uff0c\u53ef\u4ee5\u78ba\u8a8d\u4f3a\u670d\u5668\u5b58\u5728\u9ad8\u8ca0\u8f09\u60c5\u6cc1\u3002\u89c0\u5bdf\u5404\u9032\u7a0b\u7684\u8cc7\u6e90\u4f7f\u7528\u60c5\u6cc1\uff0c\u53ef\u4ee5\u770b\u5230 ID \u70ba 682 \u7684\u9032\u7a0b CPU \u767e\u5206\u6bd4\u76f8\u5c0d\u8f03\u9ad8\u3002<\/p>\n 2.2 \u78ba\u5b9a\u5177\u9ad4\u7570\u5e38\u696d\u52d9<\/strong><\/p>\n \u9019\u88e1\uff0c\u6211\u5011\u53ef\u4ee5\u4f7f\u7528 \u53ef\u4ee5\u5f97\u51fa\uff0c\u8a72\u9032\u7a0b\u5c0d\u61c9\u8cc7\u6599\u5e73\u53f0\u7684 web \u670d\u52d9\u3002<\/p>\n 2.3 \u5b9a\u4f4d\u7570\u5e38\u7dda\u7a0b\u548c\u5177\u9ad4\u4ee3\u78bc\u884c<\/strong><\/p>\n \u50b3\u7d71\u89e3\u6c7a\u65b9\u6848\u901a\u5e38\u6d89\u53ca 4 \u500b\u6b65\u9a5f\uff1a<\/p>\n \u4f46\u5c0d\u65bc\u7dda\u4e0a\u554f\u984c\u5b9a\u4f4d\uff0c\u6bcf\u4e00\u79d2\u90fd\u5f88\u5bf6\u8cb4\uff0c\u4e0a\u8ff0 4 \u500b\u6b65\u9a5f\u904e\u65bc\u7e41\u7463\u8017\u6642\u3002\u4e4b\u524d\u6dd8\u5bf6\u7684 oldratlee \u5c07\u4e0a\u8ff0\u904e\u7a0b\u5c01\u88dd\u6210\u4e00\u500b\u5de5\u5177\uff1a \u53ef\u4ee5\u5f97\u51fa\uff0c\u7cfb\u7d71\u4e2d\u4e00\u500b\u6642\u9593\u5de5\u5177\u985e\u65b9\u6cd5\u7684\u57f7\u884c CPU \u767e\u5206\u6bd4\u5f88\u9ad8\u3002\u5b9a\u4f4d\u5230\u5177\u9ad4\u65b9\u6cd5\u5f8c\uff0c\u6aa2\u67e5\u4ee3\u78bc\u908f\u8f2f\u662f\u5426\u5b58\u5728\u6027\u80fd\u554f\u984c\u3002[\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u7d93\u904e\u524d\u9762\u7684\u5206\u6790\u6392\u67e5\uff0c\u6700\u7d42\u78ba\u5b9a\u4e86\u4e00\u500b\u6642\u9593\u5de5\u5177\u985e\u7684\u554f\u984c\uff0c\u5c0e\u81f4\u4f3a\u670d\u5668\u8ca0\u8f09\u548c CPU \u4f7f\u7528\u7387\u9ad8\u3002<\/p>\n \u53ef\u4ee5\u5f97\u51fa\uff0c\u5982\u679c\u7576\u524d\u6642\u9593\u70ba\u4e0a\u5348 10 \u9ede\uff0c\u55ae\u6b21\u67e5\u8a62\u7684\u8a08\u7b97\u6b21\u6578\u70ba 10*60*60*n = 36,000*n \u6b21\uff0c\u4e26\u4e14\u96a8\u8457\u6642\u9593\u589e\u52a0\uff0c\u6bcf\u6b21\u67e5\u8a62\u7684\u8a08\u7b97\u6b21\u6578\u5c07\u96a8\u8457\u63a5\u8fd1\u5348\u591c\u800c\u7dda\u6027\u589e\u52a0\u3002\u7531\u65bc\u5373\u6642\u67e5\u8a62\u3001\u5373\u6642\u544a\u8b66\u7b49\u591a\u500b\u6a21\u7d44\u7684\u5927\u91cf\u67e5\u8a62\u8acb\u6c42\u9700\u8981\u591a\u6b21\u8abf\u7528\u8a72\u65b9\u6cd5\uff0c\u5c0e\u81f4\u5927\u91cf\u4f54\u7528\u548c\u6d6a\u8cbb CPU \u8cc7\u6e90\u3002<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u5b9a\u4f4d\u5230\u554f\u984c\u5f8c\uff0c\u9996\u5148\u8003\u616e\u7684\u662f\u6e1b\u5c11\u8a08\u7b97\u6b21\u6578\uff0c\u512a\u5316\u7570\u5e38\u65b9\u6cd5\u3002\u7d93\u904e\u6392\u67e5\uff0c\u767c\u73fe\u5728\u908f\u8f2f\u5c64\uff0c\u65b9\u6cd5\u8fd4\u56de\u7684\u96c6\u5408\u4e2d\u7684\u5167\u5bb9\u4e26\u6c92\u6709\u88ab\u4f7f\u7528\uff0c\u800c\u662f\u7c21\u55ae\u5730\u4f7f\u7528\u4e86\u96c6\u5408\u7684\u5927\u5c0f\u503c\u3002\u5728\u78ba\u8a8d\u908f\u8f2f\u5f8c\uff0c\u901a\u904e\u65b0\u65b9\u6cd5\uff08\u7576\u524d\u79d2\u6578 – \u96f6\u9ede\u79d2\u6578\uff09\u7c21\u5316\u4e86\u8a08\u7b97\uff0c\u66ff\u63db\u4e86\u88ab\u8abf\u7528\u7684\u65b9\u6cd5\uff0c\u89e3\u6c7a\u4e86\u8a08\u7b97\u6b21\u6578\u904e\u591a\u7684\u554f\u984c\u3002\u4e0a\u7dda\u5f8c\uff0c\u89c0\u5bdf\u4f3a\u670d\u5668\u8ca0\u8f09\u548c CPU \u4f7f\u7528\u7387\uff0c\u76f8\u6bd4\u7570\u5e38\u6642\u671f\u4e0b\u964d\u4e86 30 \u500d\uff0c\u6062\u5fa9\u5230\u6b63\u5e38\u72c0\u614b\u3002\u81f3\u6b64\uff0c\u554f\u984c\u5f97\u5230\u89e3\u6c7a\u3002<\/p>\n [\/vc_column_text][\/vc_column][\/vc_row][vc_row el_class=”blog-detail-section”][vc_column][vc_column_text]<\/p>\n \u5728\u7de8\u78bc\u904e\u7a0b\u4e2d\uff0c\u9664\u4e86\u5be6\u73fe\u696d\u52d9\u908f\u8f2f\u5916\uff0c\u9084\u9700\u8981\u6ce8\u610f\u4ee3\u78bc\u7684\u6027\u80fd\u512a\u5316\u3002\u80fd\u5be6\u73fe\u7684\u696d\u52d9\u9700\u6c42\uff0c\u548c\u80fd\u66f4\u9ad8\u6548\u3001\u66f4\u512a\u96c5\u5730\u5be6\u73fe\uff0c\u5be6\u969b\u4e0a\u53cd\u6620\u4e86\u5169\u7a2e\u5b8c\u5168\u4e0d\u540c\u7684\u5de5\u7a0b\u5e2b\u80fd\u529b\u548c\u5883\u754c\uff0c\u5f8c\u8005\u4e5f\u662f\u5de5\u7a0b\u5e2b\u7684\u6838\u5fc3\u7af6\u722d\u529b\u3002<\/p>\n \u4ee3\u78bc\u5beb\u5b8c\u5f8c\uff0c\u591a\u505a review\uff0c\u601d\u8003\u662f\u5426\u53ef\u4ee5\u7528\u66f4\u597d\u7684\u65b9\u5f0f\u5be6\u73fe\u3002\u5728\u7dda\u4e0a\u554f\u984c\u4e2d\u4e0d\u8981\u5ffd\u8996\u4efb\u4f55\u5c0f\u7d30\u7bc0\uff01\u7d30\u7bc0\u662f\u9b54\u9b3c\u3002\u6280\u8853\u540c\u4ec1\u9700\u8981\u6709\u5228\u6839\u554f\u5e95\u7684\u6b32\u671b\u548c\u8ffd\u6c42\u5353\u8d8a\u7684\u7cbe\u795e\uff0c\u53ea\u6709\u9019\u6a23\u624d\u80fd\u4e0d\u65b7\u6210\u9577\u548c\u9032\u6b65\u3002<\/p>\n\u6545\u969c\u6392\u67e5\u6b65\u9a5f<\/strong><\/h2>\n
top<\/code> \u547d\u4ee4\u78ba\u8a8d\u4f3a\u670d\u5668\u7684\u5177\u9ad4\u60c5\u6cc1\uff0c\u7136\u5f8c\u6839\u64da\u60c5\u6cc1\u9032\u884c\u5206\u6790\u5224\u65b7\u3002<\/p>\npwdx<\/code> \u547d\u4ee4\u6839\u64da PID \u627e\u5230\u696d\u52d9\u9032\u7a0b\u8def\u5f91\uff0c\u9032\u800c\u5b9a\u4f4d\u8cac\u4efb\u4eba\u548c\u5c08\u6848\uff1a<\/p>\n1. top \u6309 P \u6392\u5e8f\uff1a1040 \/\/ \u9996\u5148\u6309\u9032\u7a0b\u8ca0\u8f09\u6392\u5e8f\uff0c\u627e\u5230 maxLoad(pid)\r\n2. top -Hp \u9032\u7a0bPID\uff1a1073 \/\/ \u627e\u5230\u76f8\u95dc\u8ca0\u8f09\u7dda\u7a0b PID\r\n3. printf \"0x%x\" \u7dda\u7a0bPID\uff1a0x431 \/\/ \u5c07\u7dda\u7a0b PID \u8f49\u70ba\u5341\u516d\u9032\u5236\uff0c\u4fbf\u65bc\u5f8c\u7e8c jstack \u65e5\u8a8c\u641c\u7d22\r\n4. jstack \u9032\u7a0bPID | vim +\/\u5341\u516d\u9032\u5236\u7dda\u7a0bPID - \/\/ \u5982\uff1ajstack 1040|vim +\/0x431 -\r\n<\/code><\/pre>\nshow-busy-java-threads.sh<\/code>\uff0c\u53ef\u4ee5\u65b9\u4fbf\u5730\u5728\u7dda\u4e0a\u5b9a\u4f4d\u6b64\u985e\u554f\u984c\uff1a<\/p>\n\u6839\u56e0\u5206\u6790<\/strong><\/h2>\n
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\u89e3\u6c7a\u65b9\u6848<\/strong><\/h2>\n
\u7e3d\u7d50<\/strong><\/h2>\n