{"id":328,"date":"2024-01-13T12:18:15","date_gmt":"2024-01-13T04:18:15","guid":{"rendered":"https:\/\/www.liaoxinghui.com\/?p=328"},"modified":"2024-01-13T12:18:16","modified_gmt":"2024-01-13T04:18:16","slug":"%e4%bd%bf%e7%94%a8perf%e5%af%b9%e7%b3%bb%e7%bb%9f%e8%bf%9b%e8%a1%8c%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/www.liaoxinghui.com\/?p=328","title":{"rendered":"\u7cfb\u7edf\u6027\u80fd\u5206\u6790\u795e\u5668perf"},"content":{"rendered":"<p class=\"wp-block-paragraph\">perf\u5de5\u5177\u662fLinux\u7cfb\u7edf\u4e2d\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5168\u79f0\u4e3aPerformance Analysis Tool\u3002\u5b83\u662fLinux\u5185\u6838\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u6700\u65e9\u51fa\u73b0\u5728Linux\u5185\u6838\u7248\u672c2.6.31\u4e2d\u3002perf\u5de5\u5177\u7531Linux\u793e\u533a\u5f00\u53d1\uff0c\u76ee\u7684\u662f\u4e3a\u4e86\u63d0\u4f9b\u4e00\u4e2a\u5f3a\u5927\u7684\u3001\u7edf\u4e00\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5229\u7528Linux\u5185\u6838\u4e2d\u7684\u6027\u80fd\u8ba1\u6570\u5668\u5b50\u7cfb\u7edf\uff08Performance Counters for Linux\uff0cPCL\uff09\u6765\u76d1\u63a7\u548c\u7edf\u8ba1\u7cfb\u7edf\u548c\u5e94\u7528\u7a0b\u5e8f\u7684\u6027\u80fd\u6307\u6807\u3002<\/p>\n<p class=\"wp-block-paragraph\">perf\u5de5\u5177\u7684\u4e3b\u8981\u5e94\u7528\u573a\u666f\u5305\u62ec\uff1a<\/p>\n<ol class=\"wp-block-list\">\n<li>CPU\u6027\u80fd\u5206\u6790\uff1a\u53ef\u4ee5\u76d1\u63a7CPU\u4f7f\u7528\u7387\u3001\u5206\u6790CPU\u7f13\u5b58\u547d\u4e2d\u7387\u3001\u6307\u4ee4\u5206\u652f\u9884\u6d4b\u7b49\uff0c\u5e2e\u52a9\u5f00\u53d1\u8005\u4f18\u5316\u7a0b\u5e8f\u6027\u80fd\u3002<\/li>\n\n<li>\u5185\u5b58\u6027\u80fd\u5206\u6790\uff1a\u53ef\u4ee5\u5206\u6790\u5185\u5b58\u8bbf\u95ee\u6a21\u5f0f\u3001\u5185\u5b58\u8bbf\u95ee\u5ef6\u8fdf\u7b49\uff0c\u4ee5\u4fbf\u4e8e\u53d1\u73b0\u5185\u5b58\u74f6\u9888\u95ee\u9898\u3002<\/li>\n\n<li>\u8f6f\u4ef6\u548c\u786c\u4ef6\u4e8b\u4ef6\u76d1\u63a7\uff1a\u53ef\u4ee5\u8ddf\u8e2a\u5404\u79cd\u8f6f\u4ef6\u4e8b\u4ef6\uff08\u5982\u7cfb\u7edf\u8c03\u7528\u3001\u4e0a\u4e0b\u6587\u5207\u6362\uff09\u548c\u786c\u4ef6\u4e8b\u4ef6\uff08\u5982CPU\u5468\u671f\u3001\u7f13\u5b58\u547d\u4e2d\u548c\u672a\u547d\u4e2d\uff09\u3002<\/li>\n\n<li>\u7a0b\u5e8f\u70ed\u70b9\u5206\u6790\uff1a\u53ef\u4ee5\u5b9a\u4f4d\u7a0b\u5e8f\u4e2d\u7684\u6027\u80fd\u70ed\u70b9\uff0c\u5373\u7a0b\u5e8f\u8fd0\u884c\u4e2d\u6700\u6d88\u8017\u8d44\u6e90\u7684\u90e8\u5206\u3002<\/li>\n\n<li>\u52a8\u6001\u8ffd\u8e2a\uff1a\u53ef\u4ee5\u52a8\u6001\u5730\u8ffd\u8e2a\u5185\u6838\u6216\u7528\u6237\u6001\u7a0b\u5e8f\u7684\u51fd\u6570\u8c03\u7528\u548c\u4e8b\u4ef6\uff0c\u65e0\u9700\u91cd\u65b0\u7f16\u8bd1\u7a0b\u5e8f\u3002<\/li>\n\n<li>\u6027\u80fd\u8ba1\u6570\u5668\u7ba1\u7406\uff1a\u53ef\u4ee5\u7ba1\u7406\u548c\u914d\u7f6e\u5904\u7406\u5668\u7684\u6027\u80fd\u8ba1\u6570\u5668\uff0c\u8fdb\u884c\u66f4\u6df1\u5165\u7684\u6027\u80fd\u5206\u6790\u3002<\/li>\n<\/ol>\n<p class=\"wp-block-paragraph\">perf\u5de5\u5177\u7684\u4f7f\u7528\u901a\u5e38\u6d89\u53ca\u4ee5\u4e0b\u51e0\u4e2a\u57fa\u672c\u547d\u4ee4\uff1a<\/p>\n<ul class=\"wp-block-list\">\n<li><code>perf stat<\/code>\uff1a\u7528\u4e8e\u6536\u96c6\u6574\u4f53\u6027\u80fd\u8ba1\u6570\u5668\u6570\u636e\u3002<\/li>\n\n<li><code>perf top<\/code>\uff1a\u63d0\u4f9b\u4e00\u4e2a\u5b9e\u65f6\u7684\u6027\u80fd\u70ed\u70b9\u89c6\u56fe\u3002<\/li>\n\n<li><code>perf record<\/code>\uff1a\u8bb0\u5f55\u6027\u80fd\u6570\u636e\u4f9b\u4e4b\u540e\u5206\u6790\u3002<\/li>\n\n<li><code>perf report<\/code>\uff1a\u5206\u6790<code>perf record<\/code>\u6536\u96c6\u7684\u6027\u80fd\u6570\u636e\u3002<\/li>\n\n<li><code>perf list<\/code>\uff1a\u5217\u51fa\u53ef\u7528\u7684\u6027\u80fd\u4e8b\u4ef6\u3002<\/li>\n<\/ul>\n<p class=\"wp-block-paragraph\">perf\u662f\u4e00\u4e2a\u529f\u80fd\u5f3a\u5927\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u5f00\u53d1\u8005\u548c\u7cfb\u7edf\u7ba1\u7406\u5458\u8bca\u65ad\u6027\u80fd\u95ee\u9898\uff0c\u4f18\u5316\u8f6f\u4ef6\u548c\u7cfb\u7edf\u7684\u6027\u80fd\u3002<\/p>\n<p class=\"wp-block-paragraph\"><\/p>\n<h2 class=\"wp-block-heading\">\u5bf9CPU\u8fdb\u884c\u91c7\u6837<\/h2>\n<p class=\"wp-block-paragraph\">\u5bf9\u4e8eCPU\u6216\u8fdb\u7a0b\u7684\u91c7\u6837\uff0c\u53ef\u4ee5\u4f7f\u7528<code>perf record<\/code>\u547d\u4ee4\uff0c\u7136\u540e\u901a\u8fc7<code>perf report<\/code>\u6765\u89e3\u6790\u91c7\u6837\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u793a\u4f8b\uff1a<\/p>\n<ol class=\"wp-block-list\">\n<li>\u5bf9\u6574\u4e2a\u7cfb\u7edfCPU\u8fdb\u884c\u91c7\u6837\uff1a<\/li>\n<\/ol>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf record -a<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u5bf9\u6240\u6709CPU\u4e0a\u7684\u6240\u6709\u8fdb\u7a0b\u8fdb\u884c\u91c7\u6837\u3002<code>-a<\/code>\u53c2\u6570\u8868\u793a\u76d1\u63a7\u6240\u6709CPU\u3002<\/p>\n<ol class=\"wp-block-list\" start=\"2\">\n<li>\u5bf9\u7279\u5b9a\u7684CPU\u8fdb\u884c\u91c7\u6837\uff1a<\/li>\n<\/ol>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf record -a --cpu=1<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u547d\u4ee4\u53ea\u5bf9\u7f16\u53f7\u4e3a1\u7684CPU\u8fdb\u884c\u91c7\u6837\u3002<\/p>\n<ol class=\"wp-block-list\" start=\"3\">\n<li>\u5bf9\u7279\u5b9a\u8fdb\u7a0b\u8fdb\u884c\u91c7\u6837\uff1a<\/li>\n<\/ol>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf record -p 12345<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc<code>12345<\/code>\u662f\u4f60\u60f3\u8981\u91c7\u6837\u7684\u8fdb\u7a0b\u7684PID\u3002<\/p>\n<ol class=\"wp-block-list\" start=\"4\">\n<li>\u5bf9\u7279\u5b9a\u8fdb\u7a0b\u53ca\u5176\u5b50\u8fdb\u7a0b\u8fdb\u884c\u91c7\u6837\uff1a<\/li>\n<\/ol>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf record -g -p 12345<\/pre>\n<p class=\"wp-block-paragraph\"><code>-g<\/code>\u53c2\u6570\u8868\u793a\u8bb0\u5f55\u8c03\u7528\u6808\u4fe1\u606f\uff0c\u8fd9\u5728\u5206\u6790\u7a0b\u5e8f\u7684\u51fd\u6570\u8c03\u7528\u5173\u7cfb\u65f6\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u91c7\u6837\u5b8c\u6210\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528<code>perf report<\/code>\u6765\u67e5\u770b\u91c7\u6837\u7ed3\u679c\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf report<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u8bfb\u53d6\u9ed8\u8ba4\u751f\u6210\u7684<code>perf.data<\/code>\u6587\u4ef6\uff0c\u5e76\u663e\u793a\u4e00\u4e2a\u4ea4\u4e92\u5f0f\u7684\u6587\u672c\u7528\u6237\u754c\u9762\uff0c\u5217\u51fa\u91c7\u6837\u4e2d\u6d88\u8017CPU\u6700\u591a\u7684\u51fd\u6570\u3002\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u754c\u9762\u6765\u6d4f\u89c8\u548c\u5206\u6790\u6027\u80fd\u74f6\u9888\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u5982\u679c\u4f60\u60f3\u8981\u5bf9\u91c7\u6837\u7ed3\u679c\u8fdb\u884c\u66f4\u8be6\u7ec6\u7684\u5206\u6790\uff0c\u53ef\u4ee5\u4f7f\u7528\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf report -n --stdio<\/pre>\n<p class=\"wp-block-paragraph\"><code>-n<\/code>\u53c2\u6570\u53ef\u4ee5\u663e\u793a\u6837\u672c\u7684\u6570\u91cf\uff0c<code>--stdio<\/code>\u53c2\u6570\u5219\u5c06\u7ed3\u679c\u4ee5\u6807\u51c6\u8f93\u51fa\u7684\u5f62\u5f0f\u5c55\u793a\uff0c\u800c\u4e0d\u662f\u4ea4\u4e92\u5f0f\u754c\u9762\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0a\u547d\u4ee4\u90fd\u662f\u5728\u9ed8\u8ba4\u7684\u91c7\u6837\u9891\u7387\u4e0b\u8fd0\u884c\u7684\uff0c\u4f60\u4e5f\u53ef\u4ee5\u901a\u8fc7<code>-F<\/code>\u9009\u9879\u6307\u5b9a\u91c7\u6837\u9891\u7387\uff08\u5355\u4f4d\u662fHz\uff09\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf record -F 99 -a<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u547d\u4ee4\u5c06\u4ee5\u6bcf\u79d299\u6b21\u7684\u9891\u7387\u5bf9\u6240\u6709CPU\u8fdb\u884c\u91c7\u6837\u3002\u8c03\u6574\u91c7\u6837\u9891\u7387\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5728\u51cf\u5c11\u6570\u636e\u91cf\u548c\u4fdd\u6301\u8db3\u591f\u91c7\u6837\u7cbe\u5ea6\u4e4b\u95f4\u627e\u5230\u5e73\u8861\u3002<\/p>\n<p class=\"wp-block-paragraph\"><\/p>\n<p class=\"wp-block-paragraph\"><code>perf stat<\/code>\u547d\u4ee4\u662f\u7528\u6765\u6536\u96c6\u548c\u663e\u793a\u4e00\u6bb5\u65f6\u95f4\u5185\u7684\u6027\u80fd\u8ba1\u6570\u5668\u4e8b\u4ef6\u7684\u7edf\u8ba1\u4fe1\u606f\u3002\u8fd9\u4e2a\u547d\u4ee4\u5bf9\u4e8e\u5feb\u901f\u8bc4\u4f30\u7a0b\u5e8f\u6216\u7cfb\u7edf\u7684\u6574\u4f53\u6027\u80fd\u7279\u5f81\u975e\u5e38\u6709\u7528\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u4e00\u4e2a<code>perf stat<\/code>\u547d\u4ee4\u7684\u4f7f\u7528\u5b9e\u4f8b\uff0c\u5b83\u5c06\u8fd0\u884c\u4e00\u4e2a\u7a0b\u5e8f\u5e76\u62a5\u544a\u8be5\u7a0b\u5e8f\u6267\u884c\u671f\u95f4\u7684\u4e00\u4e9b\u5173\u952e\u786c\u4ef6\u4e8b\u4ef6\u7684\u7edf\u8ba1\u6570\u636e\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf stat -B ls<\/pre>\n<p class=\"wp-block-paragraph\">\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c<code>-B<\/code>\u9009\u9879\u662f\u7528\u6765\u5f00\u542f\u8be6\u7ec6\u6a21\u5f0f\uff0c<code>ls<\/code>\u662f\u8981\u6267\u884c\u5e76\u6536\u96c6\u6027\u80fd\u6570\u636e\u7684\u547d\u4ee4\u3002\u8fd9\u6761\u547d\u4ee4\u4f1a\u6267\u884c<code>ls<\/code>\uff08\u5217\u51fa\u5f53\u524d\u76ee\u5f55\u4e0b\u7684\u6587\u4ef6\u548c\u76ee\u5f55\uff09\uff0c\u540c\u65f6\u6536\u96c6\u548c\u663e\u793a\u4e0e\u4e4b\u76f8\u5173\u7684\u6027\u80fd\u6570\u636e\u3002<\/p>\n<p class=\"wp-block-paragraph\"><code>perf stat<\/code>\u9ed8\u8ba4\u4f1a\u663e\u793a\u4e00\u4e9b\u57fa\u672c\u7684\u6027\u80fd\u4e8b\u4ef6\uff0c\u5982CPU\u5468\u671f\u6570\u3001\u6307\u4ee4\u6570\u548c\u7f13\u5b58\u5f15\u7528\u7b49\u3002\u5982\u679c\u4f60\u60f3\u8981\u6536\u96c6\u7279\u5b9a\u7684\u6027\u80fd\u4e8b\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528<code>-e<\/code>\u9009\u9879\u6765\u6307\u5b9a\u3002\u4f8b\u5982\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf stat -e cache-misses,cache-references,instructions,cycles .\/your_program<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u547d\u4ee4\u4f1a\u5728\u8fd0\u884c<code>.\/your_program<\/code>\u7684\u540c\u65f6\uff0c\u6536\u96c6\u7f13\u5b58\u672a\u547d\u4e2d\u6570\u3001\u7f13\u5b58\u5f15\u7528\u6570\u3001\u6307\u4ee4\u6570\u548cCPU\u5468\u671f\u6570\u3002<\/p>\n<p class=\"wp-block-paragraph\"><code>perf stat<\/code>\u8fd8\u53ef\u4ee5\u7528\u4e8e\u76d1\u63a7\u7279\u5b9a\u7684CPU\u6216\u8005\u8fdb\u7a0b\u3002\u4f8b\u5982\uff0c\u76d1\u63a7\u7279\u5b9aCPU\u4e0a\u7684\u4e8b\u4ef6\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf stat -a --cpu=0 -e cycles,instructions ls<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc<code>-a<\/code>\u8868\u793a\u76d1\u63a7\u6240\u6709\u8fdb\u7a0b\uff0c<code>--cpu=0<\/code>\u8868\u793a\u53ea\u76d1\u63a70\u53f7CPU\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u53c8\u6bd4\u5982\uff0c\u76d1\u63a7\u7279\u5b9a\u8fdb\u7a0bID\uff08\u6bd4\u59821234\uff09\u7684\u6027\u80fd\u4e8b\u4ef6\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">perf stat -p 1234 -e cycles,instructions<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc<code>-p 1234<\/code>\u8868\u793a\u76d1\u63a7\u8fdb\u7a0bID\u4e3a1234\u7684\u8fdb\u7a0b\u3002<\/p>\n<p class=\"wp-block-paragraph\"><code>perf stat<\/code>\u53ef\u4ee5\u5e2e\u52a9\u4f60\u5feb\u901f\u4e86\u89e3\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u7684\u6027\u80fd\u7279\u5f81\uff0c\u4ece\u800c\u4e3a\u6027\u80fd\u4f18\u5316\u63d0\u4f9b\u7ebf\u7d22\u3002<\/p>\n<p class=\"wp-block-paragraph\"><\/p>\n<p class=\"wp-block-paragraph\">\u901a\u5e38\u5982\u679c\u5185\u5bb9\u5f88\u591a\uff0c\u6211\u4eec\u9700\u8981\u66f4\u4ed4\u7ec6\u7684\u5206\u6790\u7684\u8bdd\u53ef\u4ee5\u5c06\u7ed3\u679c\u8f6c\u6362\u6210\u706b\u7130\u56fe\uff0c\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n<p class=\"wp-block-paragraph\">\u751f\u6210\u706b\u7130\u56fe\u901a\u5e38\u9700\u8981\u51e0\u4e2a\u6b65\u9aa4\uff1a\u9996\u5148\u4f7f\u7528<code>perf record<\/code>\u6765\u6536\u96c6\u6027\u80fd\u6570\u636e\uff0c\u7136\u540e\u7528<code>perf script<\/code>\u5904\u7406\u8fd9\u4e9b\u6570\u636e\uff0c\u5e76\u6700\u540e\u7528\u706b\u7130\u56fe\u751f\u6210\u5de5\u5177\u6765\u751f\u6210\u706b\u7130\u56fe\u3002\u706b\u7130\u56fe\u662f\u4e00\u79cd\u53ef\u89c6\u5316\u7684\u5806\u6808\u8ddf\u8e2a\uff0c\u5b83\u53ef\u4ee5\u5e2e\u52a9\u4f60\u76f4\u89c2\u5730\u7406\u89e3\u7a0b\u5e8f\u8fd0\u884c\u65f6\u7684\u65f6\u95f4\u90fd\u82b1\u8d39\u5728\u54ea\u4e9b\u51fd\u6570\u4e0a\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u662f\u751f\u6210\u706b\u7130\u56fe\u7684\u4e00\u822c\u6b65\u9aa4\uff1a<\/p>\n<ol class=\"wp-block-list\">\n<li><strong>\u6536\u96c6\u6027\u80fd\u6570\u636e<\/strong> \u4f7f\u7528<code>perf record<\/code>\u6765\u6536\u96c6\u7a0b\u5e8f\u7684\u6027\u80fd\u6570\u636e\u3002\u4e3a\u4e86\u751f\u6210\u706b\u7130\u56fe\uff0c\u901a\u5e38\u9700\u8981\u8bb0\u5f55\u8c03\u7528\u6808\u4fe1\u606f\uff1a<\/li>\n<\/ol>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   perf record -g -F 99 .\/your_program<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc<code>-g<\/code>\u8868\u793a\u8bb0\u5f55\u8c03\u7528\u6808\u4fe1\u606f\uff0c<code>-F 99<\/code>\u8868\u793a\u91c7\u6837\u9891\u7387\u4e3a\u6bcf\u79d299\u6b21\uff0c<code>.\/your_program<\/code>\u662f\u4f60\u8981\u5206\u6790\u7684\u7a0b\u5e8f\u3002<\/p>\n<ol class=\"wp-block-list\" start=\"2\">\n<li><strong>\u751f\u6210\u5806\u6808\u8ddf\u8e2a<\/strong> \u4f7f\u7528<code>perf script<\/code>\u6765\u5bfc\u51fa\u6536\u96c6\u5230\u7684\u6027\u80fd\u6570\u636e\uff0c\u5e76\u4e3a\u706b\u7130\u56fe\u751f\u6210\u505a\u51c6\u5907\uff1a<\/li>\n<\/ol>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   perf script &gt; out.perf<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u4f1a\u5c06<code>perf record<\/code>\u6536\u96c6\u5230\u7684\u6570\u636e\u8f6c\u50a8\u5230<code>out.perf<\/code>\u6587\u4ef6\u4e2d\u3002<\/p>\n<ol class=\"wp-block-list\" start=\"3\">\n<li><strong>\u751f\u6210\u706b\u7130\u56fe<\/strong> \u706b\u7130\u56fe\u7684\u751f\u6210\u9700\u8981\u4f7f\u7528\u4e13\u95e8\u7684\u5de5\u5177\u3002\u4e00\u4e2a\u5e38\u7528\u7684\u5de5\u5177\u662fBrendan Gregg\u7684<code>FlameGraph<\/code>\u5de5\u5177\u96c6\u3002\u4f60\u9700\u8981\u4eceGitHub\u4e0a\u514b\u9686\u8fd9\u4e2a\u5de5\u5177\u96c6\uff0c\u5e76\u4f7f\u7528\u5b83\u6765\u751f\u6210\u706b\u7130\u56fe\uff1a<\/li>\n<\/ol>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"generic\" data-enlighter-theme=\"\" data-enlighter-highlight=\"\" data-enlighter-linenumbers=\"\" data-enlighter-lineoffset=\"\" data-enlighter-title=\"\" data-enlighter-group=\"\">   git clone https:\/\/github.com\/brendangregg\/FlameGraph\n   cd FlameGraph\n   .\/stackcollapse-perf.pl  out.folded\n   .\/flamegraph.pl out.folded &gt; flamegraph.svg<\/pre>\n<p class=\"wp-block-paragraph\">\u8fd9\u4e9b\u547d\u4ee4\u505a\u4e86\u4ee5\u4e0b\u51e0\u4ef6\u4e8b\uff1a<\/p>\n<ul class=\"wp-block-list\">\n<li>\u4eceGitHub\u514b\u9686<code>FlameGraph<\/code>\u5de5\u5177\u96c6\u3002<\/li>\n\n<li>\u4f7f\u7528<code>stackcollapse-perf.pl<\/code>\u811a\u672c\u6765\u5904\u7406<code>perf script<\/code>\u8f93\u51fa\u7684\u6570\u636e\u3002<\/li>\n\n<li>\u4f7f\u7528<code>flamegraph.pl<\/code>\u811a\u672c\u6765\u751f\u6210\u706b\u7130\u56fe\uff0c\u8f93\u51fa\u4e3aSVG\u683c\u5f0f\u3002<\/li>\n<\/ul>\n<ol class=\"wp-block-list\">\n<li><strong>\u67e5\u770b\u706b\u7130\u56fe<\/strong> \u6700\u540e\uff0c\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u4efb\u4f55\u652f\u6301SVG\u683c\u5f0f\u7684\u6d4f\u89c8\u5668\u6216\u56fe\u7247\u67e5\u770b\u5668\u6765\u67e5\u770b\u751f\u6210\u7684<code>flamegraph.svg<\/code>\u6587\u4ef6\u3002<\/li>\n<\/ol>\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u8981\u6ce8\u610f\u7684\u662f\u4ee5\u4e0a\u6b65\u9aa4\u4e2d\u7684<code>FlameGraph<\/code>\u5de5\u5177\u96c6\u9700\u8981Perl\u73af\u5883\u6765\u8fd0\u884c\u3002\u5982\u679c\u4f60\u7684\u7cfb\u7edf\u4e2d\u6ca1\u6709\u5b89\u88c5Perl\uff0c\u4f60\u9700\u8981\u5148\u5b89\u88c5Perl\u73af\u5883\u3002<\/p>\n<p class=\"wp-block-paragraph\">\u751f\u6210\u706b\u7130\u56fe\u662f\u4e00\u4e2a\u590d\u6742\u7684\u8fc7\u7a0b\uff0c\u9700\u8981\u5bf9\u6027\u80fd\u5206\u6790\u6709\u4e00\u5b9a\u7684\u7406\u89e3\u3002\u706b\u7130\u56fe\u63d0\u4f9b\u4e86\u4e00\u4e2a\u975e\u5e38\u76f4\u89c2\u7684\u65b9\u5f0f\u6765\u67e5\u770b\u7a0b\u5e8f\u4e2d\u54ea\u4e9b\u51fd\u6570\u5360\u7528\u4e86\u5927\u90e8\u5206\u65f6\u95f4\uff0c\u4ece\u800c\u5e2e\u52a9\u6211\u4eec\u8bc6\u522b\u7a0b\u5e8f\u7684\u6027\u80fd\u74f6\u9888\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>perf\u5de5\u5177\u662fLinux\u7cfb\u7edf\u4e2d\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u5168\u79f0\u4e3aPerformance Analysis Tool\u3002\u5b83\u662fLinux\u5185\u6838\u4e2d\u7684\u4e00\u90e8\u5206\uff0c\u6700\u65e9 &hellip;<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,10],"tags":[68,69],"class_list":["post-328","post","type-post","status-publish","format-standard","hentry","category-linux","category-10","tag-perf","tag-69"],"views":803,"_links":{"self":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts\/328","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=328"}],"version-history":[{"count":1,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts\/328\/revisions"}],"predecessor-version":[{"id":329,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=\/wp\/v2\/posts\/328\/revisions\/329"}],"wp:attachment":[{"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=328"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=328"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liaoxinghui.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=328"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}