{"id":120978,"date":"2023-04-29T01:36:02","date_gmt":"2023-04-28T17:36:02","guid":{"rendered":"http:\/\/www.idc.net\/help\/120978\/"},"modified":"2023-04-29T01:36:02","modified_gmt":"2023-04-28T17:36:02","slug":"linux-%e7%ba%bf%e7%a8%8b-cpu-%e4%bd%bf%e7%94%a8%e7%8e%87%e4%bc%98%e5%8c%96%e6%8a%80%e5%b7%a7-linux-%e7%ba%bf%e7%a8%8b-cpu-%e4%bd%bf%e7%94%a8%e7%8e%87","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/120978\/","title":{"rendered":"Linux \u7ebf\u7a0b CPU \u4f7f\u7528\u7387\u4f18\u5316\u6280\u5de7 (linux \u7ebf\u7a0b cpu \u4f7f\u7528\u7387)"},"content":{"rendered":"<p>\u968f\u7740\u4e92\u8054\u7f51\u7684\u9ad8\u901f\u53d1\u5c55\uff0c\u8ba1\u7b97\u673a\u7cfb\u7edf\u7684\u5e76\u53d1\u6027\u6210\u4e3a\u4e86\u4e00\u4e2a\u5173\u952e\u95ee\u9898\u3002Linux 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\u540c\u65f6\u8fd0\u884c\u591a\u4e2a\u7ebf\u7a0b\u3002\u4f46\u662f\uff0c\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u8fd9\u4f1a\u589e\u52a0 CPU \u4f7f\u7528\u7387\u5e76\u5bfc\u81f4\u989d\u5916\u7684\u5f00\u9500\u3002\u7981\u7528\u8d85\u7ebf\u7a0b\u6709\u52a9\u4e8e\u51cf\u5c11\u7ebf\u7a0b\u4e4b\u95f4\u7684\u5e72\u6270\u3002<\/p>\n<p>2. \u5408\u5e76\u7ebf\u7a0b\uff1a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u7ebf\u7a0b\u6570\u91cf\u53ef\u80fd\u662f\u968f\u673a\u7684\uff0c\u53ef\u80fd\u5b58\u5728\u4e0d\u5fc5\u8981\u7684\u7ebf\u7a0b\u3002\u5408\u5e76\u7ebf\u7a0b\u6709\u52a9\u4e8e\u51cf\u5c11\u7ebf\u7a0b\u6570\u91cf\uff0c\u4ece\u800c\u964d\u4f4e CPU \u4f7f\u7528\u7387\u3002\u4e0d\u8fc7\uff0c\u5fc5\u987b\u8c28\u614e\u5bf9\u5f85\u6b64\u9879\u6280\u672f\u3002<\/p>\n<p>3. 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\u4f7f\u7528\u7ebf\u7a0b\u6c60\uff1a\u7ebf\u7a0b\u6c60\u53ef\u4ee5\u907f\u514d\u4e0d\u5fc5\u8981\u7684\u7ebf\u7a0b\u521b\u5efa\uff0c\u5e76\u53ef\u4ee5\u66f4\u597d\u5730\u5229\u7528\u7cfb\u7edf\u8d44\u6e90\u3002\u7ebf\u7a0b\u6c60\u53ef\u4ee5\u5728\u5e94\u7528\u7a0b\u5e8f\u542f\u52a8\u65f6\u521b\u5efa\uff0c\u7136\u540e\u5728\u9700\u8981\u65f6\u4f7f\u7528\u73b0\u6709\u7684\u7ebf\u7a0b\u3002<\/p>\n<p>6. \u5b89\u6392\u7ebf\u7a0b\u4f18\u5148\u7ea7\uff1a\u7ebf\u7a0b\u4f18\u5148\u7ea7\u53ef\u4ee5\u5f71\u54cd\u8c03\u5ea6\u5668\u5982\u4f55\u5206\u914d CPU \u8d44\u6e90\u3002\u8bbe\u7f6e\u7ebf\u7a0b\u4f18\u5148\u7ea7\u6709\u52a9\u4e8e\u786e\u4fdd\u91cd\u8981\u7ebf\u7a0b\u80fd\u591f\u4f18\u5148\u83b7\u5f97 CPU \u8d44\u6e90\uff0c\u4ece\u800c\u589e\u52a0\u7cfb\u7edf\u7684\u603b\u4f53\u6548\u7387\u3002<\/p>\n<p>\u7ebf\u7a0b CPU \u4f7f\u7528\u7387\u4f18\u5316\u662f\u4e00\u9879\u5173\u952e\u7684\u4efb\u52a1\u3002\u4f18\u5316\u7ebf\u7a0b\u7684 CPU \u4f7f\u7528\u7387\u53ef\u4ee5\u63d0\u9ad8\u7cfb\u7edf\u7684\u5e76\u53d1\u80fd\u529b\u548c\u6548\u7387\u3002\u6b64\u5916\uff0c\u4f18\u5316\u7ebf\u7a0b\u4e5f\u53ef\u4ee5\u51cf\u5c11\u7cfb\u7edf\u5d29\u6e83\u7684\u6982\u7387\u3002\u901a\u8fc7\u4f7f\u7528\u4e0a\u8ff0\u6280\u5de7\uff0c\u53ef\u4ee5\u6709\u6548\u5730\u89e3\u51b3\u7ebf\u7a0b CPU \u4f7f\u7528\u7387\u8fc7\u9ad8\u6216\u8fc7\u4f4e\u7684\u95ee\u9898\uff0c\u4ece\u800c\u63d0\u9ad8\u7cfb\u7edf\u7684\u7a33\u5b9a\u6027\u548c\u6027\u80fd\u3002<\/p>\n<p><strong>\u76f8\u5173\u95ee\u9898\u62d3\u5c55\u9605\u8bfb\uff1a<\/strong><\/p>\n<ul>\n<li>linux \u6027\u80fd\u4f18\u5316\u2013 cpu \u5207\u6362\u4ee5\u53cacpu\u8fc7\u9ad8<\/li>\n<li>linux c++ \u591a\u7ebf\u7a0b\uff0c\u67d0\u7ebf\u7a0bcpu\u5360\u7528\u7387\u9ad8\uff0c\u6709\u54ea\u4e9b\u6bd4\u8f83\u597d\u7684\u89e3\u51b3\u529e\u6cd5<\/li>\n<\/ul>\n<h3>linux \u6027\u80fd\u4f18\u5316\u2013 cpu \u5207\u6362\u4ee5\u53cacpu\u8fc7\u9ad8<\/h3>\n<p>\u672c\u6587\u5148\u4ecb\u7ecd\u4e86cpu\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u57fa\u7840\u77e5\u8bc6\uff0c\u4ee5\u53ca\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u7c7b\u578b\uff08\u8fdb\u7a0b\uff0c\u7ebf\u7a0b\u7b49\u5207\u6362\uff09\u3002\u7136\u540e\u4ecb\u7ecd\u4e86\u5982\u4f55\u67e5\u770bcpu\u5207\u6362\u6b21\u6570\u7684\u5de5\u5177\u548c\u6307\u6807\u7684\u89e3\u91ca\u3002\u540c\u65f6\u5bf9\u65e5\u5e38\u5206\u6790\u79cdcpu\u8fc7\u9ad8\u7684\u60c5\u51b5\u4e0b\u5982\u4f55\u5206\u6790\u548c\u5b9a\u4f4d\u7684\u65b9\u6cd5\u505a\u4e86\u4e00\u5b9a\u7684\u4ecb\u7ecd\uff0c\u4f7f\u7528\u4e00\u4e2a\u7b80\u5355\u7684\u6848\u4f8b\u8fdb\u884c\u5206\u6790\uff0c\u5148\u7528top\uff0cpidstat\u7b49\u5de5\u5177\u627e\u51fa\u5360\u7528\u8fc7\u9ad8\u7684\u8fdb\u7a0bid\uff0c\u7136\u540e\u901a\u8fc7\u5206\u6790\u5230\u5e95\u662f\u7528\u6237\u6001cpu\u8fc7\u9ad8\uff0c\u8fd8\u662f\u5185\u6838\u6001cpu\u8fc7\u9ad8\uff0c\u5e76\u7528perf \u5b9a\u4f4d\u5230\u5177\u4f53\u7684\u8c03\u7528\u51fd\u6570\u3002\uff08\u6765\u81ea\u6781\u5ba2\u65f6\u95f4\u8bfe\u7a0b\u5b66\u4e60\u7b14\u8bb0\uff09<\/p>\n<p> 1\u3001\u591a\u4efb\u52a1\u7ade\u4e89CPU\uff0ccpu\u53d8\u6362\u4efb\u52a1\u7684\u65f6\u5019\u8fdb\u884cCPU\u4e0a\u4e0b\u6587\u5207\u6362(context switch)\u3002CPU\u6267\u884c\u4efb\u52a1\u67094\u79cd\u65b9\u5f0f\uff1a\u8fdb\u7a0b\u3001\u7ebf\u7a0b\u3001\u6216\u8005\u786c\u4ef6\u901a\u8fc7\u89e6\u53d1\u4fe1\u53f7\u5bfc\u81f4\u4e2d\u65ad\u7684\u8c03\u7528\u3002<\/p>\n<p> 2\u3001\u5f53\u5207\u6362\u4efb\u52a1\u7684\u65f6\u5019\uff0c\u9700\u8981\u8bb0\u5f55\u4efb\u52a1\u5f53\u524d\u7684\u72b6\u6001\u548c\u83b7\u53d6\u4e0b\u4e00\u4efb\u52a1\u7684\u4fe1\u606f\u548c\u5730\u5740(\u6307\u9488)\uff0c\u8fd9\u5c31\u662f\u4e0a\u4e0b\u6587\u7684\u5185\u5bb9\u3002\u56e0\u6b64\uff0c\u4e0a\u4e0b\u6587\u662f\u6307\u67d0\u4e00\u65f6\u95f4\u70b9CPU\u5bc4\u5b58\u5668(CPU register)\u548c\u7a0b\u5e8f\u8ba1\u6570\u5668(PC)\u7684\u5185\u5bb9, \u5e7f\u4e49\u4e0a\u8fd8\u5305\u62ec\u5185\u5b58\u4e2d\u8fdb\u7a0b\u7684\u865a\u62df\u5730\u5740\u6620\u5c04\u4fe1\u606f.<\/p>\n<p> 3\u3001\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u8fc7\u7a0b\uff1a<\/p>\n<p> 4\u3001\u6839\u636e\u4efb\u52a1\u7684\u6267\u884c\u5f62\u5f0f\uff0c\u76f8\u5e94\u7684\u4e0b\u4e0a\u6587\u5207\u6362\uff0c\u6709\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u5207\u6362\u3001\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u5207\u6362\u3001\u4ee5\u53ca\u4e2d\u65ad\u4e0a\u4e0b\u6587\u5207\u6362\u4e09\u7c7b\u3002<\/p>\n<p> 5\u3001\u8fdb\u7a0b\u548c\u7ebf\u7a0b\u7684\u533a\u522b\uff1a<\/p>\n<p> \u8fdb\u7a0b\u662f\u8d44\u6e90\u5206\u914d\u548c\u6267\u884c\u7684\u57fa\u672c\u5355\u4f4d\uff1b\u7ebf\u7a0b\u662f\u4efb\u52a1\u8c03\u5ea6\u548c\u8fd0\u884c\u7684\u57fa\u672c\u5355\u4f4d\u3002\u7ebf\u7a0b\u6ca1\u6709\u8d44\u6e90\uff0c\u8fdb\u7a0b\u7ed9\u6307\u9488\u63d0\u4f9b\u865a\u62df\u5185\u5b58\u3001\u6808\u3001\u53d8\u91cf\u7b49\u5171\u4eab\u8d44\u6e90\uff0c\u800c\u7ebf\u7a0b\u53ef\u4ee5\u5171\u4eab\u8fdb\u7a0b\u7684\u8d44\u6e90\u3002<\/p>\n<p> 6\u3001\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u5207\u6362\uff1a\u662f\u6307\u4ece\u4e00\u4e2a\u8fdb\u7a0b\u5207\u6362\u5230\u53e6\u4e00\u4e2a\u8fdb\u7a0b\u3002<\/p>\n<p> (1)\u8fdb\u7a0b\u8fd0\u884c\u6001\u4e3a\u5185\u6838\u8fd0\u884c\u6001\u548c\u8fdb\u7a0b\u8fd0\u884c\u6001\u3002\u5185\u6838\u7a7a\u95f4\u6001\u8d44\u6e90\u5305\u62ec\u5185\u6838\u7684\u5806\u6808\u3001\u5bc4\u5b58\u5668\u7b49\uff1b\u7528\u6237\u7a7a\u95f4\u6001\u8d44\u6e90\u6398\u664c\u6838\u5305\u62ec\u865a\u62df\u5185\u5b58\u3001\u6808\u3001\u53d8\u91cf\u3001\u6b63\u6587\u3001\u6570\u636e\u7b49<\/p>\n<p> (2)\u7cfb\u7edf\u8c03\u7528(\u8f6f\u4e2d\u65ad)\u5728\u5185\u6838\u6001\u5b8c\u6210\u7684\uff0c\u9700\u8981\u8fdb\u884c2\u6b21CPU\u4e0a\u4e0b\u6587\u5207\u6362(\u7528\u6237\u7a7a\u95f4\u2013&gt;\u5185\u6838\u7a7a\u95f4\u2013&gt;\u7528\u6237\u7a7a\u95f4)\uff0c\u4e0d\u6d89\u53ca\u7528\u6237\u6001\u8d44\u6e90\uff0c\u4e5f\u4e0d\u4f1a\u5207\u6362\u8fdb\u7a0b\u3002<\/p>\n<p> (3)\u8fdb\u7a0b\u662f\u7531\u5185\u6838\u6765\u7ba1\u7406\u548c\u8c03\u5ea6\u7684\uff0c\u8fdb\u7a0b\u7684\u5207\u6362\u53ea\u80fd\u53d1\u751f\u5728\u5185\u6838\u6001\u3002\u6240\u4ee5\uff0c\u8fdb\u7a0b\u7684\u4e0a\u4e0b\u6587\u4e0d\u4ec5\u5305\u62ec\u4e86\u7528\u6237\u7a7a\u95f4\u7684\u8d44\u6e90\uff0c\u4e5f\u5305\u62ec\u5185\u6838\u7a7a\u95f4\u8d44\u6e90\u3002<\/p>\n<p> (4)\u8fdb\u7a0b\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u8fc7\u7a0b\uff1a<\/p>\n<p> (5)\u3001\u4e0b\u5217\u5c06\u4f1a\u89e6\u53d1\u8c28\u6e23\u8fdb\u7a0b\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u573a\u666f\uff1a<\/p>\n<p> 7\u3001\u7ebf\u7a0b\u4e0a\u4e0b\u6587\u5207\u6362\uff1a<\/p>\n<p> 8\u3001\u4e2d\u65ad\u4e0a\u4e0b\u6587\u5207\u6362<\/p>\n<p> \u5feb\u901f\u54cd\u5e94\u786c\u4ef6\u7684\u4e8b\u4ef6\uff0c\u4e2d\u65ad\u5904\u7406\u4f1a\u6253\u65ad\u8fdb\u7a0b\u7684\u6b63\u5e38\u8c03\u5ea6\u548c\u6267\u884c\u3002\u540c\u4e00CPU\u5185\uff0c\u786c\u4ef6\u4e2d\u65ad\u4f18\u5148\u7ea7\u9ad8\u4e8e\u8fdb\u7a0b\u3002\u5207\u6362\u8fc7\u7a0b\u7c7b\u4f3c\u4e8e\u7cfb\u7edf\u8c03\u7528\u7684\u65f6\u5019\uff0c\u4e0d\u6d89\u53ca\u5230\u7528\u6237\u8fd0\u884c\u6001\u8d44\u6e90\u3002\u4f46\u5927\u91cf\u7684\u4e2d\u65ad\u4e0a\u4e0b\u6587\u5207\u6362\u540c\u6837\u53ef\u80fd\u5f15\u53d1\u6027\u80fd\u95ee\u9898\u3002<\/p>\n<p> \u91cd\u70b9\u5173\u6ce8\u4fe1\u606f\uff1a<\/p>\n<p> \u7cfb\u7edf\u7684\u5c31\u7eea\u961f\u5217\u8fc7\u957f\uff0c\u4e5f\u5c31\u662f\u6b63\u5728\u8fd0\u884c\u548c\u7b49\u5f85 CPU \u7684\u8fdb\u7a0b\u6570\u8fc7\u591a\uff0c\u5bfc\u81f4\u4e86\u5927\u91cf\u7684\u4e0a\u4e0b\u6587\u5207\u6362\uff0c\u800c\u4e0a\u4e0b\u6587\u5207\u6362\u53c8\u5bfc\u81f4\u4e86\u7cfb\u7edf CPU \u7684\u5360\u7528\u7387\u5347\u9ad8\u3002<\/p>\n<p> \u8fd9\u4e2a\u7ed3\u679c\u4e2d\u6709\u4e24\u5217\u5185\u5bb9\u662f\u6211\u4eec\u7684\u91cd\u70b9\u5173\u6ce8\u5bf9\u8c61\u3002\u4e00\u4e2a\u662f <\/p>\n<p> cswch<\/p>\n<p> \uff0c\u8868\u793a\u6bcf\u79d2\u81ea\u613f\u4e0a\u4e0b\u6587\u5207\u6362\uff08voluntary context switches\uff09\u7684\u6b21\u6570\uff0c\u53e6\u4e00\u4e2a\u5219\u662f <\/p>\n<p> nvcswch<\/p>\n<p> \uff0c\u8868\u793a\u6bcf\u79d2\u975e\u81ea\u613f\u4e0a\u4e0b\u6587\u5207\u6362\uff08non voluntary context switches\uff09\u7684\u6b21\u6570\u3002<\/p>\n<p> linux\u7684\u4e2d\u65ad\u4f7f\u7528\u60c5\u5224\u6398\u51b5\u53ef\u4ee5\u4ece \/proc\/interrupts \u8fd9\u4e2a\u53ea\u8bfb\u6587\u4ef6\u4e2d\u8bfb\u53d6\u3002\/proc \u5b9e\u9645\u4e0a\u662f Linux \u7684\u4e00\u4e2a\u865a\u62df\u6587\u4ef6\u7cfb\u7edf\uff0c\u7528\u4e8e\u5185\u6838\u7a7a\u95f4\u4e0e\u7528\u6237\u7a7a\u95f4\u4e4b\u95f4\u7684\u901a\u4fe1\u3002\/proc\/interrupts \u5c31\u662f\u8fd9\u79cd\u901a\u4fe1\u673a\u5236\u7684\u4e00\u90e8\u5206\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u53ea\u8bfb\u7684\u4e2d\u65ad\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n<p> \u91cd\u8c03\u5ea6\u4e2d\u65ad\uff08RES\uff09\uff0c\u8fd9\u4e2a\u4e2d\u65ad\u7c7b\u578b\u8868\u793a\uff0c\u5524\u9192\u7a7a\u95f2\u72b6\u6001\u7684 CPU \u6765\u8c03\u5ea6\u65b0\u7684\u4efb\u52a1\u8fd0\u884c\u3002\u8fd9\u662f\u591a\u5904\u7406\u5668\u7cfb\u7edf\uff08P\uff09\u4e2d\uff0c\u8c03\u5ea6\u5668\u7528\u6765\u5206\u6563\u4efb\u52a1\u5230\u4e0d\u540c CPU \u7684\u673a\u5236\uff0c\u901a\u5e38\u4e5f\u88ab\u79f0\u4e3a\u5904\u7406\u5668\u95f4\u4e2d\u65ad\uff08Inter-Processor Interrupts\uff0cIPI\uff09\u3002<\/p>\n<p> \u8fd9\u4e2a\u6570\u503c\u5176\u5b9e\u53d6\u51b3\u4e8e\u7cfb\u7edf\u672c\u8eab\u7684 CPU \u6027\u80fd\u3002\u5982\u679c\u7cfb\u7edf\u7684\u4e0a\u4e0b\u6587\u5207\u6362\u6b21\u6570\u6bd4\u8f83\u7a33\u5b9a\uff0c\u90a3\u4e48\u4ece\u6570\u767e\u5230\u4e00\u4e07\u4ee5\u5185\uff0c\u90fd\u5e94\u8be5\u7b97\u662f\u6b63\u5e38\u7684\u3002\u4f46\u5f53\u4e0a\u4e0b\u6587\u5207\u6362\u6b21\u6570\u8d85\u8fc7\u4e00\u4e07\u6b21\uff0c\u6216\u8005\u5207\u6362\u6b21\u6570\u51fa\u73b0\u6570\u91cf\u7ea7\u7684\u589e\u957f\u65f6\uff0c\u5c31\u5f88\u53ef\u80fd\u5df2\u7ecf\u51fa\u73b0\u4e86\u6027\u80fd\u95ee\u9898\u3002\u8fd9\u65f6\uff0c\u9700\u8981\u6839\u636e\u4e0a\u4e0b\u6587\u5207\u6362\u7684\u7c7b\u578b\uff0c\u518d\u505a\u5177\u4f53\u5206\u6790\u3002<\/p>\n<p> \u6bd4\u65b9\u8bf4\uff1a<\/p>\n<p> \u9996\u5148\u901a\u8fc7uptime\u67e5\u770b\u7cfb\u7edf\u8d1f\u8f7d\uff0c\u7136\u540e\u4f7f\u7528mpstat\u7ed3\u5408pidstat\u6765\u521d\u6b65\u5224\u65ad\u5230\u5e95\u662fcpu\u8ba1\u7b97\u91cf\u5927\u8fd8\u662f\u8fdb\u7a0b\u4e89\u62a2\u8fc7\u5927\u6216\u8005\u662fio\u8fc7\u591a\uff0c\u63a5\u7740\u4f7f\u7528vmstat\u5206\u6790\u5207\u6362\u6b21\u6570\uff0c\u4ee5\u53ca\u5207\u6362\u7c7b\u578b\uff0c\u6765\u8fdb\u4e00\u6b65\u5224\u65ad\u5230\u5e95\u662fio\u8fc7\u591a\u5bfc\u81f4\u95ee\u9898\u8fd8\u662f\u8fdb\u7a0b\u4e89\u62a2\u6fc0\u70c8\u5bfc\u81f4\u95ee\u9898\u3002<\/p>\n<p> CPU \u4f7f\u7528\u7387\u76f8\u5173\u7684\u91cd\u8981\u6307\u6807\uff1a<\/p>\n<p> \u6027\u80fd\u5206\u6790\u5de5\u5177\u7ed9\u51fa\u7684\u90fd\u662f\u95f4\u9694\u4e00\u6bb5\u65f6\u95f4\u7684\u5e73\u5747 CPU \u4f7f\u7528\u7387\uff0c\u6240\u4ee5\u8981\u6ce8\u610f\u95f4\u9694\u65f6\u95f4\u7684\u8bbe\u7f6e\uff0c\u7279\u522b\u662f\u7528\u591a\u4e2a\u5de5\u5177\u5bf9\u6bd4\u5206\u6790\u65f6\uff0c\u4f60\u4e00\u5b9a\u8981\u4fdd\u8bc1\u5b83\u4eec\u7528\u7684\u662f\u76f8\u540c\u7684\u95f4\u9694\u65f6\u95f4\u3002\u6bd4\u5982\uff0c\u5bf9\u6bd4\u4e00\u4e0b top \u548c ps \u8fd9\u4e24\u4e2a\u5de5\u5177\u62a5\u544a\u7684 CPU \u4f7f\u7528\u7387\uff0c\u9ed8\u8ba4\u7684\u7ed3\u679c\u5f88\u53ef\u80fd\u4e0d\u4e00\u6837\uff0c\u56e0\u4e3a top \u9ed8\u8ba4\u4f7f\u7528 3 \u79d2\u65f6\u95f4\u95f4\u9694\uff0c\u800c ps \u4f7f\u7528\u7684\u5374\u662f\u8fdb\u7a0b\u7684\u6574\u4e2a\u751f\u547d\u5468\u671f\u3002<\/p>\n<p> top \u548c ps \u662f\u6700\u5e38\u7528\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff1a<\/p>\n<p> \u8fd9\u4e2a\u8f93\u51fa\u7ed3\u679c\u4e2d\uff0c\u7b2c\u4e09\u884c %Cpu \u5c31\u662f\u7cfb\u7edf\u7684 CPU \u4f7f\u7528\u7387\uff0ctop \u9ed8\u8ba4\u663e\u793a\u7684\u662f\u6240\u6709 CPU \u7684\u5e73\u5747\u503c\uff0c\u8fd9\u4e2a\u65f6\u5019\u4f60\u53ea\u9700\u8981\u6309\u4e0b\u6570\u5b57 1 \uff0c\u5c31\u53ef\u4ee5\u5207\u6362\u5230\u6bcf\u4e2a CPU \u7684\u4f7f\u7528\u7387\u4e86\u3002\u7ee7\u7eed\u5f80\u4e0b\u770b\uff0c\u7a7a\u767d\u884c\u4e4b\u540e\u662f\u8fdb\u7a0b\u7684\u5b9e\u65f6\u4fe1\u606f\uff0c\u6bcf\u4e2a\u8fdb\u7a0b\u90fd\u6709\u4e00\u4e2a %CPU \u5217\uff0c\u8868\u793a\u8fdb\u7a0b\u7684 CPU \u4f7f\u7528\u7387\u3002\u5b83\u662f\u7528\u6237\u6001\u548c\u5185\u6838\u6001 CPU \u4f7f\u7528\u7387\u7684\u603b\u548c\uff0c\u5305\u62ec\u8fdb\u7a0b\u7528\u6237\u7a7a\u95f4\u4f7f\u7528\u7684 CPU\u3001\u901a\u8fc7\u7cfb\u7edf\u8c03\u7528\u6267\u884c\u7684\u5185\u6838\u7a7a\u95f4 CPU \u3001\u4ee5\u53ca\u5728\u5c31\u7eea\u961f\u5217\u7b49\u5f85\u8fd0\u884c\u7684 CPU\u3002\u5728\u865a\u62df\u5316\u73af\u5883\u4e2d\uff0c\u5b83\u8fd8\u5305\u62ec\u4e86\u8fd0\u884c\u865a\u62df\u673a\u5360\u7528\u7684 CPU\u3002<\/p>\n<p> \u9884\u5148\u5b89\u88c5 stress \u548c sysstat \u5305\uff0c\u5982 apt install stress sysstat\u3002<\/p>\n<p> stress \u662f\u4e00\u4e2a Linux \u7cfb\u7edf\u538b\u529b\u6d4b\u8bd5\u5de5\u5177\uff0c\u8fd9\u91cc\u6211\u4eec\u7528\u4f5c\u5f02\u5e38\u8fdb\u7a0b\u6a21\u62df\u5e73\u5747\u8d1f\u8f7d\u5347\u9ad8\u7684\u573a\u666f\u3002\u800c sysstat \u5305\u542b\u4e86\u5e38\u7528\u7684 Linux \u6027\u80fd\u5de5\u5177\uff0c\u7528\u6765\u76d1\u63a7\u548c\u5206\u6790\u7cfb\u7edf\u7684\u6027\u80fd\u3002\u6211\u4eec\u7684\u6848\u4f8b\u4f1a\u7528\u5230\u8fd9\u4e2a\u5305\u7684\u4e24\u4e2a\u547d\u4ee4 mpstat \u548c pidstat\u3002<\/p>\n<p> \u4e0b\u9762\u7684 pidstat \u547d\u4ee4\uff0c\u5c31\u95f4\u9694 1 \u79d2\u5c55\u793a\u4e86\u8fdb\u7a0b\u7684 5 \u7ec4 CPU \u4f7f\u7528\u7387\uff0c<\/p>\n<p> \u5305\u62ec\uff1a<\/p>\n<p> perf \u662f Linux 2.6.31 \u4ee5\u540e\u5185\u7f6e\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\u3002\u5b83\u4ee5\u6027\u80fd\u4e8b\u4ef6\u91c7\u6837\u4e3a\u57fa\u7840\uff0c\u4e0d\u4ec5\u53ef\u4ee5\u5206\u6790\u7cfb\u7edf\u7684\u5404\u79cd\u4e8b\u4ef6\u548c\u5185\u6838\u6027\u80fd\uff0c\u8fd8\u53ef\u4ee5\u7528\u6765\u5206\u6790\u6307\u5b9a\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u95ee\u9898\u3002<\/p>\n<p> \u4e4b\u4e00\u79cd\u5e38\u89c1\u7528\u6cd5\u662f perf top\uff0c\u7c7b\u4f3c\u4e8e top\uff0c\u5b83\u80fd\u591f\u5b9e\u65f6\u663e\u793a\u5360\u7528 CPU \u65f6\u949f\u6700\u591a\u7684\u51fd\u6570\u6216\u8005\u6307\u4ee4\uff0c\u56e0\u6b64\u53ef\u4ee5\u7528\u6765\u67e5\u627e\u70ed\u70b9\u51fd\u6570\uff0c\u4f7f\u7528\u754c\u9762\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n<p> \u8f93\u51fa\u7ed3\u679c\u4e2d\uff0c\u4e4b\u4e00\u884c\u5305\u542b\u4e09\u4e2a\u6570\u636e\uff0c\u5206\u522b\u662f\u91c7\u6837\u6570\uff08Samples\uff09\u59822K\u3001\u4e8b\u4ef6\u7c7b\u578b\uff08event\uff09\u5982cpu-clock:pppH\u548c\u4e8b\u4ef6\u603b\u6570\u91cf\uff08Event count\uff09\u5982\uff1a\u3002<\/p>\n<p> \u7b2c\u4e8c\u79cd\u5e38\u89c1\u7528\u6cd5\uff0c\u4e5f\u5c31\u662f perf record \u548c perf report\u3002 perf top \u867d\u7136\u5b9e\u65f6\u5c55\u793a\u4e86\u7cfb\u7edf\u7684\u6027\u80fd\u4fe1\u606f\uff0c\u4f46\u5b83\u7684\u7f3a\u70b9\u662f\u5e76\u4e0d\u4fdd\u5b58\u6570\u636e\uff0c\u4e5f\u5c31\u65e0\u6cd5\u7528\u4e8e\u79bb\u7ebf\u6216\u8005\u540e\u7eed\u7684\u5206\u6790\u3002\u800c perf record \u5219\u63d0\u4f9b\u4e86\u4fdd\u5b58\u6570\u636e\u7684\u529f\u80fd\uff0c\u4fdd\u5b58\u540e\u7684\u6570\u636e\uff0c\u9700\u8981\u4f60\u7528 perf report \u89e3\u6790\u5c55\u793a\u3002<\/p>\n<p> 1.\u542f\u52a8docker \u8fd0\u884c\u8fdb\u7a0b\uff1a<\/p>\n<p> 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