{"id":50388,"date":"2025-07-30T23:16:57","date_gmt":"2025-07-30T15:16:57","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/50388.html"},"modified":"2025-07-30T23:16:57","modified_gmt":"2025-07-30T15:16:57","slug":"linux%e7%b3%bb%e7%bb%9f%e7%9b%91%e6%8e%a7%e4%b8%8e%e6%80%a7%e8%83%bd%e4%bc%98%e5%8c%96%ef%bc%9a%e6%89%93%e9%80%a0%e9%ab%98%e6%95%88%e7%a8%b3%e5%ae%9a%e7%9a%84%e6%9c%8d%e5%8a%a1%e5%99%a8","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/50388.html","title":{"rendered":"Linux\u7cfb\u7edf\u76d1\u63a7\u4e0e\u6027\u80fd\u4f18\u5316\uff1a\u6253\u9020\u9ad8\u6548\u7a33\u5b9a\u7684\u670d\u52a1\u5668"},"content":{"rendered":"<hr \/>\n<hr \/>\n<p>&#x1f4a1; \u5bfc\u8bfb&#xff1a;\u670d\u52a1\u5668\u8fd0\u884c\u7f13\u6162&#xff1f;\u7cfb\u7edf\u8d1f\u8f7d\u8fc7\u9ad8&#xff1f;\u8d44\u6e90\u4e0d\u8db3\u8b66\u62a5\u9891\u7e41&#xff1f;\u672c\u6587\u5c06\u5e26\u4f60\u5168\u9762\u638c\u63e1Linux\u7cfb\u7edf\u76d1\u63a7\u4e0e\u6027\u80fd\u4f18\u5316\u6280\u672f&#xff0c;\u4ece\u8d44\u6e90\u74f6\u9888\u8bc6\u522b\u5230\u6027\u80fd\u8c03\u4f18\u6700\u4f73\u5b9e\u8df5&#xff0c;\u5e2e\u52a9\u4f60\u6253\u9020\u4e00\u4e2a\u9ad8\u6548\u3001\u7a33\u5b9a\u3001\u53ef\u9760\u7684Linux\u670d\u52a1\u5668\u3002\u65e0\u8bba\u4f60\u662f\u7cfb\u7edf\u7ba1\u7406\u5458\u3001\u5f00\u53d1\u8005\u8fd8\u662fDevOps\u5de5\u7a0b\u5e08&#xff0c;\u8fd9\u7bc7\u5b9e\u7528\u6307\u5357\u90fd\u80fd\u63d0\u5347\u4f60\u7684\u7cfb\u7edf\u8c03\u4f18\u80fd\u529b&#xff01;<\/p>\n<p>&#x1f4da; \u672c\u6587\u662f\u300a\u4ece\u5165\u95e8\u5230\u7cbe\u901a\u6e10\u8fdb\u5f0f\u5b66\u4e60Linux\u300b\u7cfb\u5217\u7684\u7b2c13\u7ae0\u3002\u901a\u8fc7\u8fd9\u7bc7\u6587\u7ae0&#xff0c;\u4f60\u5c06\u5b66\u4f1a\u5982\u4f55\u76d1\u63a7\u3001\u5206\u6790\u548c\u4f18\u5316Linux\u7cfb\u7edf\u6027\u80fd\u3002<\/p>\n<h3>\u76ee\u5f55<\/h3>\n<ul>\n<li>1. \u7cfb\u7edf\u76d1\u63a7\u57fa\u7840<\/li>\n<li>2. CPU\u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/li>\n<li>3. \u5185\u5b58\u7ba1\u7406\u4e0e\u4f18\u5316<\/li>\n<li>4. \u78c1\u76d8I\/O\u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/li>\n<li>5. \u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/li>\n<li>6. \u8fdb\u7a0b\u4e0e\u670d\u52a1\u76d1\u63a7<\/li>\n<li>7. \u7efc\u5408\u6027\u80fd\u4f18\u5316\u7b56\u7565<\/li>\n<\/ul>\n<h3>1. \u7cfb\u7edf\u76d1\u63a7\u57fa\u7840<\/h3>\n<h4>1.1 \u4e3a\u4ec0\u4e48\u9700\u8981\u7cfb\u7edf\u76d1\u63a7&#xff1f;<\/h4>\n<p>\u7cfb\u7edf\u76d1\u63a7\u5bf9\u4e8e\u7ef4\u62a4\u5065\u5eb7\u7684Linux\u7cfb\u7edf\u81f3\u5173\u91cd\u8981&#xff1a;<\/p>\n<ul>\n<li>\u9884\u9632\u6027\u7ef4\u62a4&#xff1a;\u5728\u5c0f\u95ee\u9898\u6f14\u53d8\u6210\u5927\u95ee\u9898\u524d\u53d1\u73b0\u5e76\u89e3\u51b3<\/li>\n<li>\u6027\u80fd\u4f18\u5316&#xff1a;\u8bc6\u522b\u7cfb\u7edf\u74f6\u9888&#xff0c;\u63d0\u9ad8\u8d44\u6e90\u5229\u7528\u6548\u7387<\/li>\n<li>\u5bb9\u91cf\u89c4\u5212&#xff1a;\u9884\u6d4b\u8d44\u6e90\u9700\u6c42&#xff0c;\u907f\u514d\u786c\u4ef6\u4e0d\u8db3<\/li>\n<li>\u6545\u969c\u6392\u9664&#xff1a;\u5f53\u95ee\u9898\u53d1\u751f\u65f6&#xff0c;\u5feb\u901f\u5b9a\u4f4d\u539f\u56e0<\/li>\n<li>\u5b89\u5168\u5ba1\u8ba1&#xff1a;\u68c0\u6d4b\u5f02\u5e38\u6d3b\u52a8&#xff0c;\u9632\u8303\u5b89\u5168\u5a01\u80c1<\/li>\n<\/ul>\n<h4>1.2 \u7cfb\u7edf\u8d1f\u8f7d\u6982\u5ff5<\/h4>\n<p>\u7cfb\u7edf\u8d1f\u8f7d\u662f\u8861\u91cf\u7cfb\u7edf\u7e41\u5fd9\u7a0b\u5ea6\u7684\u6307\u6807&#xff0c;\u901a\u5e38\u7528&#034;load average&#034;\u8868\u793a&#xff1a;<\/p>\n<p>$ <span class=\"token function\">uptime<\/span><br \/>\n <span class=\"token number\">10<\/span>:23:35 up <span class=\"token number\">7<\/span> days,  <span class=\"token number\">2<\/span>:12,  <span class=\"token number\">1<\/span> user,  load average: <span class=\"token number\">0.45<\/span>, <span class=\"token number\">0.62<\/span>, <span class=\"token number\">0.54<\/span><\/p>\n<p>\u8d1f\u8f7d\u6570\u503c\u8868\u793a\u7b49\u5f85\u8fd0\u884c\u7684\u8fdb\u7a0b\u6570&#xff0c;\u4e09\u4e2a\u6570\u5b57\u5206\u522b\u4ee3\u88681\u5206\u949f\u30015\u5206\u949f\u548c15\u5206\u949f\u7684\u5e73\u5747\u503c\u3002<\/p>\n<p>\u7406\u60f3\u8d1f\u8f7d\u503c\u5e94\u8be5\u63a5\u8fd1CPU\u6838\u5fc3\u6570&#xff1a;<\/p>\n<ul>\n<li>\u56db\u6838\u7cfb\u7edf\u4e2d&#xff0c;\u8d1f\u8f7d\u503c4.0\u8868\u793aCPU\u8d44\u6e90\u521a\u597d\u7528\u6ee1<\/li>\n<li>\u4f4e\u4e8e\u6838\u5fc3\u6570&#xff1a;\u7cfb\u7edf\u6709\u7a7a\u95f2\u8d44\u6e90<\/li>\n<li>\u8fdc\u9ad8\u4e8e\u6838\u5fc3\u6570&#xff1a;\u7cfb\u7edf\u8d85\u8d1f\u8377\u8fd0\u884c&#xff0c;\u8fdb\u7a0b\u9700\u8981\u7b49\u5f85CPU\u65f6\u95f4<\/li>\n<\/ul>\n<h4>1.3 \u7cfb\u7edf\u76d1\u63a7\u5de5\u5177\u6982\u89c8<\/h4>\n<h5>\u57fa\u7840\u547d\u4ee4\u884c\u5de5\u5177<\/h5>\n<ul>\n<li>top\/htop: \u5b9e\u65f6\u7cfb\u7edf\u72b6\u6001\u76d1\u89c6\u5668<\/li>\n<li>vmstat: \u865a\u62df\u5185\u5b58\u7edf\u8ba1\u4fe1\u606f<\/li>\n<li>iostat: I\/O\u8bbe\u5907\u7edf\u8ba1\u4fe1\u606f<\/li>\n<li>netstat\/ss: \u7f51\u7edc\u8fde\u63a5\u7edf\u8ba1<\/li>\n<li>free: \u5185\u5b58\u4f7f\u7528\u60c5\u51b5<\/li>\n<li>df\/du: \u78c1\u76d8\u4f7f\u7528\u60c5\u51b5<\/li>\n<li>sar: \u7cfb\u7edf\u6d3b\u52a8\u62a5\u544a<\/li>\n<\/ul>\n<h5>\u9ad8\u7ea7\u76d1\u63a7\u7cfb\u7edf<\/h5>\n<ul>\n<li>Prometheus &#043; Grafana: \u73b0\u4ee3\u76d1\u63a7\u548c\u53ef\u89c6\u5316\u7cfb\u7edf<\/li>\n<li>Nagios\/Icinga: \u4f01\u4e1a\u7ea7\u76d1\u63a7\u7cfb\u7edf<\/li>\n<li>Zabbix: \u5168\u9762\u7684\u76d1\u63a7\u89e3\u51b3\u65b9\u6848<\/li>\n<li>Netdata: \u5b9e\u65f6\u6027\u80fd\u76d1\u63a7<\/li>\n<\/ul>\n<h3>2. CPU\u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/h3>\n<h4>2.1 CPU\u76d1\u63a7\u6307\u6807\u4e0e\u5de5\u5177<\/h4>\n<h5>\u5173\u952e\u6307\u6807<\/h5>\n<ul>\n<li>CPU\u4f7f\u7528\u7387: \u7528\u6237\u6001\u3001\u7cfb\u7edf\u6001\u3001I\/O\u7b49\u5f85\u3001\u7a7a\u95f2\u65f6\u95f4\u7684\u767e\u5206\u6bd4<\/li>\n<li>\u8d1f\u8f7d\u5e73\u5747\u503c: \u7b49\u5f85\u8fd0\u884c\u7684\u8fdb\u7a0b\u6570\u91cf<\/li>\n<li>\u8fd0\u884c\u961f\u5217\u957f\u5ea6: \u7b49\u5f85CPU\u65f6\u95f4\u7684\u8fdb\u7a0b\u6570<\/li>\n<li>\u4e0a\u4e0b\u6587\u5207\u6362\u7387: \u6bcf\u79d2\u4e0a\u4e0b\u6587\u5207\u6362\u6b21\u6570<\/li>\n<li>\u4e2d\u65ad\u7387: \u6bcf\u79d2\u5904\u7406\u7684\u4e2d\u65ad\u8bf7\u6c42\u6570<\/li>\n<\/ul>\n<h5>\u76d1\u63a7\u547d\u4ee4<\/h5>\n<p>\u67e5\u770bCPU\u6574\u4f53\u4f7f\u7528\u60c5\u51b5&#xff1a;<\/p>\n<p>$ <span class=\"token function\">top<\/span><br \/>\n<span class=\"token comment\"># \u6216\u66f4\u73b0\u4ee3\u5316\u7684\u66ff\u4ee3\u54c1<\/span><br \/>\n$ <span class=\"token function\">htop<\/span><\/p>\n<p>\u67e5\u770bCPU\u8be6\u7ec6\u7edf\u8ba1&#xff1a;<\/p>\n<p>$ mpstat -P ALL <span class=\"token number\">1<\/span><\/p>\n<p>\u67e5\u770b\u8fdb\u7a0b\u7684CPU\u4f7f\u7528\u60c5\u51b5&#xff1a;<\/p>\n<p>$ <span class=\"token function\">ps<\/span> -eo pid,ppid,cmd,%cpu,%mem &#8211;sort<span class=\"token operator\">&#061;<\/span>-%cpu <span class=\"token operator\">|<\/span> <span class=\"token function\">head<\/span><\/p>\n<p>\u4f7f\u7528sar\u67e5\u770b\u5386\u53f2CPU\u4f7f\u7528\u7387&#xff1a;<\/p>\n<p>$ sar -u <span class=\"token number\">1<\/span> <span class=\"token number\">10<\/span>  <span class=\"token comment\"># \u6bcf\u79d2\u91c7\u6837\u4e00\u6b21&#xff0c;\u517110\u6b21<\/span><\/p>\n<h4>2.2 CPU\u6027\u80fd\u95ee\u9898\u8bca\u65ad<\/h4>\n<p>\u5e38\u89c1CPU\u95ee\u9898\u53ca\u8bca\u65ad\u65b9\u6cd5&#xff1a;<\/p>\n<li>\n<p>\u9ad8CPU\u4f7f\u7528\u7387<\/p>\n<p> <span class=\"token comment\"># \u627e\u51fa\u5360\u7528CPU\u6700\u591a\u7684\u8fdb\u7a0b<\/span><br \/>\n$ <span class=\"token function\">ps<\/span> -eo pid,ppid,cmd,%cpu &#8211;sort<span class=\"token operator\">&#061;<\/span>-%cpu <span class=\"token operator\">|<\/span> <span class=\"token function\">head<\/span><\/p>\n<p><span class=\"token comment\"># \u8fdb\u4e00\u6b65\u5206\u6790\u7279\u5b9a\u8fdb\u7a0b<\/span><br \/>\n$ <span class=\"token function\">top<\/span> -Hp <span class=\"token operator\">&lt;<\/span>PID<span class=\"token operator\">&gt;<\/span>\n <\/li>\n<li>\n<p>\u9ad8\u7cfb\u7edf(sys)\u65f6\u95f4&#xff1a;\u901a\u5e38\u8868\u793a\u5185\u6838\u64cd\u4f5c\u8fc7\u591a<\/p>\n<p> $ <span class=\"token function\">vmstat<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token comment\"># \u89c2\u5bdfsy(\u7cfb\u7edf\u65f6\u95f4)\u5217\u662f\u5426\u5f02\u5e38\u9ad8<\/span>\n <\/li>\n<li>\n<p>\u9ad8\u8d1f\u8f7d\u4f46CPU\u4f7f\u7528\u7387\u4e0d\u9ad8&#xff1a;\u901a\u5e38\u8868\u793aI\/O\u74f6\u9888<\/p>\n<p> $ iostat -x <span class=\"token number\">1<\/span><br \/>\n<span class=\"token comment\"># \u68c0\u67e5I\/O\u7b49\u5f85\u65f6\u95f4<\/span>\n <\/li>\n<h4>2.3 CPU\u6027\u80fd\u4f18\u5316\u6280\u5de7<\/h4>\n<li>\n<p>\u8fdb\u7a0b\u4f18\u5148\u7ea7\u8c03\u6574<\/p>\n<p> <span class=\"token comment\"># \u964d\u4f4e\u8fdb\u7a0b\u4f18\u5148\u7ea7(\u589e\u52a0nice\u503c)<\/span><br \/>\n$ <span class=\"token function\">renice<\/span> &#043;10 -p <span class=\"token operator\">&lt;<\/span>PID<span class=\"token operator\">&gt;<\/span><\/p>\n<p><span class=\"token comment\"># \u542f\u52a8\u65f6\u8bbe\u7f6e\u4f4e\u4f18\u5148\u7ea7<\/span><br \/>\n$ <span class=\"token function\">nice<\/span> -n <span class=\"token number\">10<\/span> <span class=\"token operator\">&lt;<\/span>command<span class=\"token operator\">&gt;<\/span>\n <\/li>\n<li>\n<p>\u4f7f\u7528cgroups\u9650\u5236CPU\u4f7f\u7528<\/p>\n<p> <span class=\"token comment\"># \u521b\u5efaCPU\u9650\u5236\u7ec4<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgcreate -g cpu:\/cpulimited<\/p>\n<p><span class=\"token comment\"># \u8bbe\u7f6eCPU\u9650\u5236(50%)<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgset -r cpu.cfs_quota_us<span class=\"token operator\">&#061;<\/span><span class=\"token number\">50000<\/span> cpulimited<\/p>\n<p><span class=\"token comment\"># \u5728\u9650\u5236\u7ec4\u4e2d\u8fd0\u884c\u547d\u4ee4<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgexec -g cpu:cpulimited <span class=\"token operator\">&lt;<\/span>command<span class=\"token operator\">&gt;<\/span>\n <\/li>\n<li>\n<p>\u8c03\u6574CPU\u9891\u7387\u8c03\u8282\u5668<\/p>\n<p> <span class=\"token comment\"># \u67e5\u770b\u5f53\u524d\u8c03\u8282\u5668<\/span><br \/>\n$ <span class=\"token function\">cat<\/span> \/sys\/devices\/system\/cpu\/cpu*\/cpufreq\/scaling_governor<\/p>\n<p><span class=\"token comment\"># \u8bbe\u7f6e\u4e3a\u6027\u80fd\u6a21\u5f0f<\/span><br \/>\n$ <span class=\"token builtin class-name\">echo<\/span> performance <span class=\"token operator\">&gt;<\/span> \/sys\/devices\/system\/cpu\/cpu0\/cpufreq\/scaling_governor\n <\/li>\n<li>\n<p>\u5185\u6838\u53c2\u6570\u4f18\u5316<\/p>\n<p> <span class=\"token comment\"># \u8c03\u6574\u5185\u6838\u62a2\u5360\u6a21\u5f0f<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w kernel.sched_min_granularity_ns<span class=\"token operator\">&#061;<\/span><span class=\"token number\">10000000<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w kernel.sched_wakeup_granularity_ns<span class=\"token operator\">&#061;<\/span><span class=\"token number\">15000000<\/span>\n <\/li>\n<h3>3. \u5185\u5b58\u7ba1\u7406\u4e0e\u4f18\u5316<\/h3>\n<h4>3.1 \u5185\u5b58\u76d1\u63a7\u6307\u6807\u4e0e\u5de5\u5177<\/h4>\n<h5>\u5173\u952e\u6307\u6807<\/h5>\n<ul>\n<li>\u7269\u7406\u5185\u5b58\u4f7f\u7528\u7387: \u603b\u5185\u5b58\u3001\u5df2\u7528\u5185\u5b58\u3001\u53ef\u7528\u5185\u5b58\u3001\u7f13\u51b2\u533a\u3001\u7f13\u5b58<\/li>\n<li>\u4ea4\u6362\u7a7a\u95f4\u4f7f\u7528\u7387: \u5df2\u7528\u4ea4\u6362\u7a7a\u95f4\u3001\u4ea4\u6362\u6d3b\u52a8\u9891\u7387<\/li>\n<li>\u5185\u5b58\u5206\u9875: \u9875\u9762\u7f6e\u6362\u9891\u7387\u3001\u4e3b\u7f3a\u9875\u5f02\u5e38<\/li>\n<li>\u5185\u5b58\u5206\u914d\u548c\u91ca\u653e\u7387: \u6bcf\u79d2\u5206\u914d\u548c\u91ca\u653e\u7684\u5185\u5b58\u91cf<\/li>\n<\/ul>\n<h5>\u76d1\u63a7\u547d\u4ee4<\/h5>\n<p>\u67e5\u770b\u5185\u5b58\u4f7f\u7528\u6982\u51b5&#xff1a;<\/p>\n<p>$ <span class=\"token function\">free<\/span> -h<\/p>\n<p>\u67e5\u770b\u8be6\u7ec6\u5185\u5b58\u72b6\u6001&#xff1a;<\/p>\n<p>$ <span class=\"token function\">cat<\/span> \/proc\/meminfo<\/p>\n<p>\u76d1\u63a7\u5185\u5b58\u4f7f\u7528\u53d8\u5316&#xff1a;<\/p>\n<p>$ <span class=\"token function\">vmstat<\/span> <span class=\"token number\">1<\/span><\/p>\n<p>\u67e5\u770b\u8fdb\u7a0b\u5185\u5b58\u4f7f\u7528&#xff1a;<\/p>\n<p>$ <span class=\"token function\">ps<\/span> -eo pid,ppid,cmd,%mem &#8211;sort<span class=\"token operator\">&#061;<\/span>-%mem <span class=\"token operator\">|<\/span> <span class=\"token function\">head<\/span><\/p>\n<p>\u67e5\u770b\u5177\u4f53\u8fdb\u7a0b\u7684\u5185\u5b58\u6620\u5c04&#xff1a;<\/p>\n<p>$ pmap -x <span class=\"token operator\">&lt;<\/span>PID<span class=\"token operator\">&gt;<\/span><\/p>\n<h4>3.2 \u5185\u5b58\u6027\u80fd\u95ee\u9898\u8bca\u65ad<\/h4>\n<p>\u5e38\u89c1\u5185\u5b58\u95ee\u9898\u53ca\u8bca\u65ad\u65b9\u6cd5&#xff1a;<\/p>\n<li>\n<p>\u5185\u5b58\u4e0d\u8db3<\/p>\n<p> $ <span class=\"token function\">free<\/span> -h<br \/>\n<span class=\"token comment\"># \u89c2\u5bdfavailable\u5185\u5b58\u662f\u5426\u8fc7\u4f4e<\/span><\/p>\n<p>$ <span class=\"token function\">dmesg<\/span> <span class=\"token operator\">|<\/span> <span class=\"token function\">grep<\/span> -i <span class=\"token string\">&#034;out of memory&#034;<\/span><br \/>\n<span class=\"token comment\"># \u68c0\u67e5\u662f\u5426\u6709OOM\u4e8b\u4ef6<\/span>\n <\/li>\n<li>\n<p>\u4ea4\u6362\u7a7a\u95f4\u8fc7\u5ea6\u4f7f\u7528<\/p>\n<p> $ <span class=\"token function\">vmstat<\/span> <span class=\"token number\">1<\/span><br \/>\n<span class=\"token comment\"># \u89c2\u5bdfsi\u548cso\u5217(\u4ea4\u6362\u533a\u6570\u636e\u79fb\u5165\u548c\u79fb\u51fa)<\/span>\n <\/li>\n<li>\n<p>\u5185\u5b58\u6cc4\u6f0f<\/p>\n<p> <span class=\"token comment\"># \u76d1\u63a7\u8fdb\u7a0b\u5185\u5b58\u4f7f\u7528\u589e\u957f<\/span><br \/>\n$ <span class=\"token function\">watch<\/span> -n <span class=\"token number\">5<\/span> <span class=\"token string\">&#039;ps -o pid,vsz,rss,cmd -p &lt;PID&gt;&#039;<\/span>\n <\/li>\n<h4>3.3 \u5185\u5b58\u6027\u80fd\u4f18\u5316\u6280\u5de7<\/h4>\n<li>\n<p>\u8c03\u6574\u4ea4\u6362\u7a7a\u95f4\u4f7f\u7528\u503e\u5411<\/p>\n<p> <span class=\"token comment\"># \u67e5\u770b\u5f53\u524d\u8bbe\u7f6e<\/span><br \/>\n$ <span class=\"token function\">cat<\/span> \/proc\/sys\/vm\/swappiness<\/p>\n<p><span class=\"token comment\"># \u964d\u4f4e\u4ea4\u6362\u503e\u5411(0-100&#xff0c;\u8d8a\u4f4e\u8d8a\u4e0d\u6613\u4f7f\u7528swap)<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w vm.swappiness<span class=\"token operator\">&#061;<\/span><span class=\"token number\">10<\/span>\n <\/li>\n<li>\n<p>\u4f18\u5316\u7f13\u5b58\u6e05\u7406<\/p>\n<p> <span class=\"token comment\"># \u67e5\u770b\u5f53\u524d\u8bbe\u7f6e<\/span><br \/>\n$ <span class=\"token function\">cat<\/span> \/proc\/sys\/vm\/vfs_cache_pressure<\/p>\n<p><span class=\"token comment\"># \u8c03\u6574\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u91ca\u653e\u503e\u5411<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w vm.vfs_cache_pressure<span class=\"token operator\">&#061;<\/span><span class=\"token number\">50<\/span>\n <\/li>\n<li>\n<p>\u91ca\u653e\u7f13\u5b58(\u7d27\u6025\u60c5\u51b5)<\/p>\n<p> <span class=\"token comment\"># \u91ca\u653e\u9875\u9762\u7f13\u5b58<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> <span class=\"token function\">sync<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token builtin class-name\">echo<\/span> <span class=\"token number\">1<\/span> <span class=\"token operator\">&gt;<\/span> \/proc\/sys\/vm\/drop_caches<\/p>\n<p><span class=\"token comment\"># \u91ca\u653edentries\u548cinodes\u7f13\u5b58<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> <span class=\"token function\">sync<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token builtin class-name\">echo<\/span> <span class=\"token number\">2<\/span> <span class=\"token operator\">&gt;<\/span> \/proc\/sys\/vm\/drop_caches<\/p>\n<p><span class=\"token comment\"># \u91ca\u653e\u6240\u6709\u7f13\u5b58<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> <span class=\"token function\">sync<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token builtin class-name\">echo<\/span> <span class=\"token number\">3<\/span> <span class=\"token operator\">&gt;<\/span> \/proc\/sys\/vm\/drop_caches\n <\/li>\n<li>\n<p>\u9650\u5236\u8fdb\u7a0b\u5185\u5b58\u4f7f\u7528<\/p>\n<p> <span class=\"token comment\"># \u4f7f\u7528ulimit\u9650\u5236\u8fdb\u7a0b\u5185\u5b58<\/span><br \/>\n$ <span class=\"token builtin class-name\">ulimit<\/span> -v <span class=\"token number\">1000000<\/span>  <span class=\"token comment\"># \u9650\u5236\u865a\u62df\u5185\u5b58\u4f7f\u7528(KB)<\/span><\/p>\n<p><span class=\"token comment\"># \u4f7f\u7528cgroups\u9650\u5236\u5185\u5b58<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgcreate -g memory:\/memlimited<br \/>\n$ <span class=\"token function\">sudo<\/span> cgset -r memory.limit_in_bytes<span class=\"token operator\">&#061;<\/span>1G memlimited<br \/>\n$ <span class=\"token function\">sudo<\/span> cgexec -g memory:memlimited <span class=\"token operator\">&lt;<\/span>command<span class=\"token operator\">&gt;<\/span>\n <\/li>\n<h3>4. \u78c1\u76d8I\/O\u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/h3>\n<h4>4.1 \u78c1\u76d8I\/O\u76d1\u63a7\u6307\u6807\u4e0e\u5de5\u5177<\/h4>\n<h5>\u5173\u952e\u6307\u6807<\/h5>\n<ul>\n<li>IOPS: \u6bcf\u79d2I\/O\u64cd\u4f5c\u6570<\/li>\n<li>\u541e\u5410\u91cf: \u6bcf\u79d2\u4f20\u8f93\u7684\u6570\u636e\u91cf<\/li>\n<li>I\/O\u7b49\u5f85\u65f6\u95f4: \u8bfb\/\u5199\u64cd\u4f5c\u7684\u7b49\u5f85\u65f6\u95f4<\/li>\n<li>\u961f\u5217\u957f\u5ea6: \u7b49\u5f85\u5904\u7406\u7684I\/O\u8bf7\u6c42\u6570<\/li>\n<li>\u78c1\u76d8\u5229\u7528\u7387: \u8bbe\u5907\u7e41\u5fd9\u767e\u5206\u6bd4<\/li>\n<\/ul>\n<h5>\u76d1\u63a7\u547d\u4ee4<\/h5>\n<p>\u67e5\u770b\u78c1\u76d8I\/O\u7edf\u8ba1&#xff1a;<\/p>\n<p>$ iostat -x <span class=\"token number\">1<\/span><\/p>\n<p>\u67e5\u770b\u8be6\u7ec6I\/O\u6d3b\u52a8&#xff1a;<\/p>\n<p>$ iotop<\/p>\n<p>\u67e5\u770b\u6587\u4ef6\u7cfb\u7edf\u4f7f\u7528\u60c5\u51b5&#xff1a;<\/p>\n<p>$ <span class=\"token function\">df<\/span> -h<\/p>\n<p>\u67e5\u627e\u5360\u7528\u78c1\u76d8\u7a7a\u95f4\u6700\u591a\u7684\u76ee\u5f55&#xff1a;<\/p>\n<p>$ <span class=\"token function\">du<\/span> -h &#8211;max-depth<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span> \/path <span class=\"token operator\">|<\/span> <span class=\"token function\">sort<\/span> -hr<\/p>\n<p>\u67e5\u770b\u5177\u4f53\u78c1\u76d8\u8bfb\u5199\u8fdb\u7a0b&#xff1a;<\/p>\n<p>$ iotop -o<\/p>\n<h4>4.2 \u78c1\u76d8I\/O\u95ee\u9898\u8bca\u65ad<\/h4>\n<p>\u5e38\u89c1\u78c1\u76d8I\/O\u95ee\u9898\u53ca\u8bca\u65ad\u65b9\u6cd5&#xff1a;<\/p>\n<li>\n<p>\u9ad8I\/O\u7b49\u5f85\u65f6\u95f4<\/p>\n<p> $ iostat -x <span class=\"token number\">1<\/span><br \/>\n<span class=\"token comment\"># \u89c2\u5bdfawait\u5217(\u7b49\u5f85\u65f6\u95f4)\u662f\u5426\u8fc7\u9ad8<\/span>\n <\/li>\n<li>\n<p>I\/O\u961f\u5217\u957f\u5ea6\u8fc7\u957f<\/p>\n<p> $ iostat -x <span class=\"token number\">1<\/span><br \/>\n<span class=\"token comment\"># \u89c2\u5bdfavgqu-sz\u5217(\u5e73\u5747\u961f\u5217\u957f\u5ea6)<\/span>\n <\/li>\n<li>\n<p>\u8bc6\u522bI\/O\u5bc6\u96c6\u578b\u8fdb\u7a0b<\/p>\n<p> $ iotop -o<br \/>\n<span class=\"token comment\"># \u5217\u51fa\u6b63\u5728\u6267\u884cI\/O\u64cd\u4f5c\u7684\u8fdb\u7a0b<\/span>\n <\/li>\n<h4>4.3 \u78c1\u76d8I\/O\u4f18\u5316\u6280\u5de7<\/h4>\n<li>\n<p>\u8c03\u6574I\/O\u8c03\u5ea6\u5668<\/p>\n<p> <span class=\"token comment\"># \u67e5\u770b\u5f53\u524dI\/O\u8c03\u5ea6\u5668<\/span><br \/>\n$ <span class=\"token function\">cat<\/span> \/sys\/block\/sda\/queue\/scheduler<\/p>\n<p><span class=\"token comment\"># \u66f4\u6539\u8c03\u5ea6\u5668(\u5bf9SSD\u4f18\u5316)<\/span><br \/>\n$ <span class=\"token builtin class-name\">echo<\/span> noop <span class=\"token operator\">&gt;<\/span> \/sys\/block\/sda\/queue\/scheduler<br \/>\n<span class=\"token comment\"># \u6216\u5bf9\u673a\u68b0\u786c\u76d8\u4f18\u5316<\/span><br \/>\n$ <span class=\"token builtin class-name\">echo<\/span> deadline <span class=\"token operator\">&gt;<\/span> \/sys\/block\/sda\/queue\/scheduler\n <\/li>\n<li>\n<p>\u8c03\u6574\u9884\u8bfb\u7f13\u51b2\u5927\u5c0f<\/p>\n<p> <span class=\"token comment\"># \u67e5\u770b\u5f53\u524d\u8bbe\u7f6e(KB)<\/span><br \/>\n$ blockdev &#8211;getra \/dev\/sda<\/p>\n<p><span class=\"token comment\"># \u589e\u52a0\u9884\u8bfb\u5927\u5c0f<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> blockdev &#8211;setra <span class=\"token number\">4096<\/span> \/dev\/sda\n <\/li>\n<li>\n<p>\u4f7f\u7528noatime\u6302\u8f7d\u9009\u9879<\/p>\n<p> <span class=\"token comment\"># \u7f16\u8f91\/etc\/fstab<\/span><br \/>\n<span class=\"token assign-left variable\">UUID<\/span><span class=\"token operator\">&#061;<\/span>xxx \/mount\/point ext4 defaults,noatime <span class=\"token number\">0<\/span> <span class=\"token number\">0<\/span>\n <\/li>\n<li>\n<p>RAID\u914d\u7f6e\u4f18\u5316<\/p>\n<p> <span class=\"token comment\"># \u68c0\u67e5RAID\u72b6\u6001<\/span><br \/>\n$ <span class=\"token function\">cat<\/span> \/proc\/mdstat<\/p>\n<p><span class=\"token comment\"># \u8c03\u6574\u6761\u5e26\u5927\u5c0f\u548c\u5757\u5927\u5c0f<\/span><br \/>\n<span class=\"token comment\"># \u5728\u521b\u5efaRAID\u65f6\u914d\u7f6e<\/span><br \/>\n$ <span class=\"token function\">mdadm<\/span> &#8211;create \/dev\/md0 &#8211;level<span class=\"token operator\">&#061;<\/span><span class=\"token number\">0<\/span> &#8211;raid-devices<span class=\"token operator\">&#061;<\/span><span class=\"token number\">2<\/span> &#8211;chunk<span class=\"token operator\">&#061;<\/span><span class=\"token number\">256<\/span> \/dev\/sdb \/dev\/sdc\n <\/li>\n<li>\n<p>\u4f7f\u7528\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58<\/p>\n<p> <span class=\"token comment\"># \u4f7f\u7528\u53ef\u8c03\u6574\u7684\u6bcf\u4e2a\u8bbe\u5907\u7684\u7f13\u51b2\u533a<\/span><br \/>\n$ <span class=\"token builtin class-name\">echo<\/span> <span class=\"token number\">1024<\/span> <span class=\"token operator\">&gt;<\/span> \/sys\/block\/sda\/queue\/read_ahead_kb\n <\/li>\n<h3>5. \u7f51\u7edc\u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/h3>\n<h4>5.1 \u7f51\u7edc\u76d1\u63a7\u6307\u6807\u4e0e\u5de5\u5177<\/h4>\n<h5>\u5173\u952e\u6307\u6807<\/h5>\n<ul>\n<li>\u5e26\u5bbd\u4f7f\u7528\u7387: \u63a5\u6536\u548c\u53d1\u9001\u7684\u6570\u636e\u91cf<\/li>\n<li>\u8fde\u63a5\u6570: \u6d3b\u52a8\u8fde\u63a5\u6570\u3001\u8fde\u63a5\u72b6\u6001\u5206\u5e03<\/li>\n<li>\u5ef6\u8fdf: \u7f51\u7edc\u54cd\u5e94\u65f6\u95f4<\/li>\n<li>\u4e22\u5305\u7387: \u4e22\u5931\u7684\u6570\u636e\u5305\u767e\u5206\u6bd4<\/li>\n<li>\u7f51\u7edc\u9519\u8bef: \u63a5\u6536\u548c\u4f20\u8f93\u9519\u8bef\u8ba1\u6570<\/li>\n<\/ul>\n<h5>\u76d1\u63a7\u547d\u4ee4<\/h5>\n<p>\u67e5\u770b\u5b9e\u65f6\u7f51\u7edc\u7edf\u8ba1&#xff1a;<\/p>\n<p>$ <span class=\"token function\">netstat<\/span> -i<br \/>\n$ ss -s<\/p>\n<p>\u76d1\u63a7\u7f51\u7edc\u63a5\u53e3\u6d41\u91cf&#xff1a;<\/p>\n<p>$ iftop<br \/>\n$ nethogs<\/p>\n<p>\u8be6\u7ec6\u5206\u6790\u7f51\u7edc\u6570\u636e\u5305&#xff1a;<\/p>\n<p>$ tcpdump -i eth0<\/p>\n<p>\u8ddf\u8e2a\u7f51\u7edc\u8def\u7531\u548c\u5ef6\u8fdf&#xff1a;<\/p>\n<p>$ <span class=\"token function\">traceroute<\/span> google.com<br \/>\n$ <span class=\"token function\">ping<\/span> -c <span class=\"token number\">5<\/span> google.com<\/p>\n<h4>5.2 \u7f51\u7edc\u95ee\u9898\u8bca\u65ad<\/h4>\n<p>\u5e38\u89c1\u7f51\u7edc\u95ee\u9898\u53ca\u8bca\u65ad\u65b9\u6cd5&#xff1a;<\/p>\n<li>\n<p>\u9ad8\u5ef6\u8fdf<\/p>\n<p> $ <span class=\"token function\">ping<\/span> -c <span class=\"token number\">10<\/span> destination<br \/>\n<span class=\"token comment\"># \u89c2\u5bdfavg, min, max\u65f6\u95f4<\/span><\/p>\n<p>$ <span class=\"token function\">mtr<\/span> destination<br \/>\n<span class=\"token comment\"># \u7ed3\u5408traceroute\u548cping\u529f\u80fd<\/span>\n <\/li>\n<li>\n<p>\u5e26\u5bbd\u9971\u548c<\/p>\n<p> $ iftop -i eth0<br \/>\n<span class=\"token comment\"># \u89c2\u5bdf\u5e26\u5bbd\u4f7f\u7528\u60c5\u51b5<\/span>\n <\/li>\n<li>\n<p>\u8fde\u63a5\u95ee\u9898<\/p>\n<p> $ ss -tan state established<br \/>\n<span class=\"token comment\"># \u67e5\u770b\u5df2\u5efa\u7acb\u7684TCP\u8fde\u63a5<\/span><\/p>\n<p>$ ss -tan state time-wait<br \/>\n<span class=\"token comment\"># \u67e5\u770bTIME_WAIT\u8fde\u63a5\u6570<\/span>\n <\/li>\n<h4>5.3 \u7f51\u7edc\u6027\u80fd\u4f18\u5316\u6280\u5de7<\/h4>\n<li>\n<p>\u8c03\u6574TCP\u53c2\u6570<\/p>\n<p> <span class=\"token comment\"># \u589e\u52a0\u672c\u5730\u7aef\u53e3\u8303\u56f4<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w net.ipv4.ip_local_port_range<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;1024 65535&#034;<\/span><\/p>\n<p><span class=\"token comment\"># \u542f\u7528TCP\u5feb\u901f\u6253\u5f00<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w net.ipv4.tcp_fastopen<span class=\"token operator\">&#061;<\/span><span class=\"token number\">3<\/span><\/p>\n<p><span class=\"token comment\"># \u4f18\u5316TCP\u5185\u5b58\u4f7f\u7528<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w net.ipv4.tcp_rmem<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;4096 87380 16777216&#034;<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w net.ipv4.tcp_wmem<span class=\"token operator\">&#061;<\/span><span class=\"token string\">&#034;4096 65536 16777216&#034;<\/span>\n <\/li>\n<li>\n<p>\u4f18\u5316TIME_WAIT\u72b6\u6001<\/p>\n<p> <span class=\"token comment\"># \u5141\u8bb8TIME_WAIT\u5957\u63a5\u5b57\u91cd\u7528<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w net.ipv4.tcp_tw_reuse<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span><\/p>\n<p><span class=\"token comment\"># \u52a0\u5febTIME_WAIT\u56de\u6536<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> sysctl -w net.ipv4.tcp_fin_timeout<span class=\"token operator\">&#061;<\/span><span class=\"token number\">30<\/span>\n <\/li>\n<li>\n<p>\u8c03\u6574\u7f51\u5361\u961f\u5217\u957f\u5ea6<\/p>\n<p> <span class=\"token comment\"># \u68c0\u67e5\u5f53\u524d\u8bbe\u7f6e<\/span><br \/>\n$ <span class=\"token function\">ethtool<\/span> -g eth0<\/p>\n<p><span class=\"token comment\"># \u589e\u52a0\u961f\u5217\u957f\u5ea6<\/span><br \/>\n$ <span class=\"token function\">ethtool<\/span> -G eth0 rx <span class=\"token number\">4096<\/span> tx <span class=\"token number\">4096<\/span>\n <\/li>\n<li>\n<p>\u542f\u7528Jumbo Frames<\/p>\n<p> <span class=\"token comment\"># \u589e\u52a0MTU\u5927\u5c0f(\u9700\u8981\u7f51\u7edc\u8bbe\u5907\u652f\u6301)<\/span><br \/>\n$ <span class=\"token function\">ip<\/span> <span class=\"token function\">link<\/span> <span class=\"token builtin class-name\">set<\/span> dev eth0 mtu <span class=\"token number\">9000<\/span>\n <\/li>\n<li>\n<p>\u7ed1\u5b9a\u7f51\u5361\u4e2d\u65ad\u5230\u7279\u5b9aCPU<\/p>\n<p> <span class=\"token comment\"># \u67e5\u770b\u4e2d\u65ad\u5206\u914d<\/span><br \/>\n$ <span class=\"token function\">cat<\/span> \/proc\/interrupts <span class=\"token operator\">|<\/span> <span class=\"token function\">grep<\/span> eth<\/p>\n<p><span class=\"token comment\"># \u8bbe\u7f6e\u7f51\u5361\u4e2d\u65ad\u4eb2\u548c\u6027<\/span><br \/>\n$ <span class=\"token builtin class-name\">echo<\/span> <span class=\"token string\">&#034;f&#034;<\/span> <span class=\"token operator\">&gt;<\/span> \/proc\/irq\/123\/smp_affinity  <span class=\"token comment\"># \u7ed1\u5b9a\u5230CPU 0-3<\/span>\n <\/li>\n<h3>6. \u8fdb\u7a0b\u4e0e\u670d\u52a1\u76d1\u63a7<\/h3>\n<h4>6.1 \u8fdb\u7a0b\u76d1\u63a7\u5de5\u5177<\/h4>\n<h5>\u57fa\u7840\u76d1\u63a7<\/h5>\n<p><span class=\"token comment\"># \u67e5\u770b\u6240\u6709\u8fdb\u7a0b\u6811<\/span><br \/>\n$ pstree<\/p>\n<p><span class=\"token comment\"># \u8be6\u7ec6\u8fdb\u7a0b\u5217\u8868<\/span><br \/>\n$ <span class=\"token function\">ps<\/span> aux<\/p>\n<p><span class=\"token comment\"># \u6309CPU\u6216\u5185\u5b58\u6392\u5e8f<\/span><br \/>\n$ <span class=\"token function\">ps<\/span> aux &#8211;sort<span class=\"token operator\">&#061;<\/span>-%cpu<br \/>\n$ <span class=\"token function\">ps<\/span> aux &#8211;sort<span class=\"token operator\">&#061;<\/span>-%mem<\/p>\n<h5>\u5b9e\u65f6\u76d1\u63a7<\/h5>\n<p><span class=\"token comment\"># \u7cfb\u7edf\u7ea7\u76d1\u63a7<\/span><br \/>\n$ <span class=\"token function\">top<\/span><br \/>\n$ <span class=\"token function\">htop<\/span><\/p>\n<p><span class=\"token comment\"># \u8fdb\u7a0b\u7ea7\u8be6\u7ec6\u4fe1\u606f<\/span><br \/>\n$ pidstat -u -p <span class=\"token operator\">&lt;<\/span>PID<span class=\"token operator\">&gt;<\/span> <span class=\"token number\">1<\/span><\/p>\n<h5>\u670d\u52a1\u72b6\u6001\u76d1\u63a7<\/h5>\n<p><span class=\"token comment\"># \u68c0\u67e5\u670d\u52a1\u72b6\u6001<\/span><br \/>\n$ systemctl status <span class=\"token operator\">&lt;<\/span>service<span class=\"token operator\">&gt;<\/span><\/p>\n<p><span class=\"token comment\"># \u76d1\u63a7\u6240\u6709\u670d\u52a1<\/span><br \/>\n$ systemctl list-units &#8211;type<span class=\"token operator\">&#061;<\/span>service &#8211;state<span class=\"token operator\">&#061;<\/span>running<\/p>\n<h4>6.2 \u8fdb\u7a0b\u8d44\u6e90\u9650\u5236<\/h4>\n<p>\u63a7\u5236\u8fdb\u7a0b\u8d44\u6e90\u4f7f\u7528&#xff0c;\u9632\u6b62\u5355\u4e2a\u8fdb\u7a0b\u6d88\u8017\u8fc7\u591a\u7cfb\u7edf\u8d44\u6e90&#xff1a;<\/p>\n<h5>\u4f7f\u7528ulimit<\/h5>\n<p><span class=\"token comment\"># \u67e5\u770b\u8fdb\u7a0b\u8d44\u6e90\u9650\u5236<\/span><br \/>\n$ <span class=\"token builtin class-name\">ulimit<\/span> -a<\/p>\n<p><span class=\"token comment\"># \u9650\u5236\u6253\u5f00\u6587\u4ef6\u6570<\/span><br \/>\n$ <span class=\"token builtin class-name\">ulimit<\/span> -n <span class=\"token number\">10000<\/span><\/p>\n<p><span class=\"token comment\"># \u9650\u5236\u5185\u5b58\u4f7f\u7528<\/span><br \/>\n$ <span class=\"token builtin class-name\">ulimit<\/span> -v <span class=\"token number\">1000000<\/span>  <span class=\"token comment\"># \u865a\u62df\u5185\u5b58\u9650\u5236(KB)<\/span><\/p>\n<h5>\u4f7f\u7528cgroups<\/h5>\n<p><span class=\"token comment\"># \u521b\u5efa\u8fdb\u7a0b\u7ec4\u5e76\u9650\u5236\u8d44\u6e90<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgcreate -g cpu,memory,blkio:\/mygroup<\/p>\n<p><span class=\"token comment\"># \u9650\u5236CPU\u4f7f\u7528\u7387\u4e3a50%<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgset -r cpu.cfs_period_us<span class=\"token operator\">&#061;<\/span><span class=\"token number\">100000<\/span> mygroup<br \/>\n$ <span class=\"token function\">sudo<\/span> cgset -r cpu.cfs_quota_us<span class=\"token operator\">&#061;<\/span><span class=\"token number\">50000<\/span> mygroup<\/p>\n<p><span class=\"token comment\"># \u9650\u5236\u5185\u5b58\u4f7f\u7528\u4e3a1GB<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgset -r memory.limit_in_bytes<span class=\"token operator\">&#061;<\/span>1G mygroup<\/p>\n<p><span class=\"token comment\"># \u5728\u7ec4\u5185\u8fd0\u884c\u547d\u4ee4<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> cgexec -g cpu,memory,blkio:mygroup <span class=\"token operator\">&lt;<\/span>command<span class=\"token operator\">&gt;<\/span><\/p>\n<h4>6.3 \u8fdb\u7a0b\u4f18\u5316\u6280\u5de7<\/h4>\n<li>\n<p>\u4f18\u5316\u7ebf\u7a0b\u6570\u91cf<\/p>\n<p>\u4e3aCPU\u5bc6\u96c6\u578b\u5e94\u7528&#xff1a;\u7ebf\u7a0b\u6570 &#061; CPU\u6838\u5fc3\u6570<\/p>\n<p>\u4e3aI\/O\u5bc6\u96c6\u578b\u5e94\u7528&#xff1a;\u7ebf\u7a0b\u6570 &#061; CPU\u6838\u5fc3\u6570 \u00d7 (1 &#043; I\/O\u7b49\u5f85\u65f6\u95f4\/CPU\u65f6\u95f4)<\/p>\n<\/li>\n<li>\n<p>\u8bbe\u7f6e\u8fdb\u7a0b\u4eb2\u548c\u6027<\/p>\n<p> <span class=\"token comment\"># \u7ed1\u5b9a\u8fdb\u7a0b\u5230\u7279\u5b9aCPU\u6838\u5fc3<\/span><br \/>\n$ taskset -cp <span class=\"token number\">0<\/span>-2 <span class=\"token operator\">&lt;<\/span>PID<span class=\"token operator\">&gt;<\/span>\n <\/li>\n<li>\n<p>\u8c03\u6574\u8fdb\u7a0b\u4f18\u5148\u7ea7<\/p>\n<p> <span class=\"token comment\"># \u66f4\u6539\u8fd0\u884c\u4e2d\u8fdb\u7a0b\u4f18\u5148\u7ea7<\/span><br \/>\n$ <span class=\"token function\">renice<\/span> -n <span class=\"token number\">10<\/span> -p <span class=\"token operator\">&lt;<\/span>PID<span class=\"token operator\">&gt;<\/span>\n <\/li>\n<li>\n<p>\u914d\u7f6e\u670d\u52a1\u81ea\u52a8\u91cd\u542f<\/p>\n<p> <span class=\"token comment\"># \u5728systemd\u5355\u5143\u6587\u4ef6\u4e2d\u8bbe\u7f6e<\/span><br \/>\n<span class=\"token punctuation\">[<\/span>Service<span class=\"token punctuation\">]<\/span><br \/>\n<span class=\"token assign-left variable\">Restart<\/span><span class=\"token operator\">&#061;<\/span>always<br \/>\n<span class=\"token assign-left variable\">RestartSec<\/span><span class=\"token operator\">&#061;<\/span>30s\n <\/li>\n<h3>7. \u7efc\u5408\u6027\u80fd\u4f18\u5316\u7b56\u7565<\/h3>\n<h4>7.1 \u6027\u80fd\u57fa\u51c6\u6d4b\u8bd5<\/h4>\n<p>\u5728\u4f18\u5316\u524d\u540e\u8fdb\u884c\u57fa\u51c6\u6d4b\u8bd5&#xff0c;\u91cf\u5316\u6539\u8fdb\u6548\u679c&#xff1a;<\/p>\n<h5>CPU\u57fa\u51c6\u6d4b\u8bd5<\/h5>\n<p>$ sysbench &#8211;test<span class=\"token operator\">&#061;<\/span>cpu &#8211;cpu-max-prime<span class=\"token operator\">&#061;<\/span><span class=\"token number\">20000<\/span> run<\/p>\n<h5>\u5185\u5b58\u57fa\u51c6\u6d4b\u8bd5<\/h5>\n<p>$ sysbench &#8211;test<span class=\"token operator\">&#061;<\/span>memory &#8211;memory-block-size<span class=\"token operator\">&#061;<\/span>1K &#8211;memory-total-size<span class=\"token operator\">&#061;<\/span>10G run<\/p>\n<h5>\u78c1\u76d8I\/O\u57fa\u51c6\u6d4b\u8bd5<\/h5>\n<p>$ fio &#8211;name<span class=\"token operator\">&#061;<\/span>random-write &#8211;ioengine<span class=\"token operator\">&#061;<\/span>posixaio &#8211;rw<span class=\"token operator\">&#061;<\/span>randwrite &#8211;bs<span class=\"token operator\">&#061;<\/span>4k &#8211;size<span class=\"token operator\">&#061;<\/span>4g &#8211;numjobs<span class=\"token operator\">&#061;<\/span><span class=\"token number\">1<\/span> &#8211;runtime<span class=\"token operator\">&#061;<\/span><span class=\"token number\">60<\/span><\/p>\n<h5>\u7f51\u7edc\u57fa\u51c6\u6d4b\u8bd5<\/h5>\n<p><span class=\"token comment\"># \u5728\u670d\u52a1\u5668\u7aef<\/span><br \/>\n$ iperf -s<\/p>\n<p><span class=\"token comment\"># \u5728\u5ba2\u6237\u7aef<\/span><br \/>\n$ iperf -c server_ip<\/p>\n<h4>7.2 \u6027\u80fd\u4f18\u5316\u6700\u4f73\u5b9e\u8df5<\/h4>\n<li>\n<p>\u7cfb\u7edf\u66f4\u65b0\u548c\u8865\u4e01<\/p>\n<p> <span class=\"token comment\"># Debian\/Ubuntu<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> <span class=\"token function\">apt<\/span> update <span class=\"token operator\">&amp;&amp;<\/span> <span class=\"token function\">sudo<\/span> <span class=\"token function\">apt<\/span> upgrade<\/p>\n<p><span class=\"token comment\"># RHEL\/CentOS<\/span><br \/>\n$ <span class=\"token function\">sudo<\/span> yum update\n <\/li>\n<li>\n<p>\u5b9e\u65bd\u76d1\u63a7\u7cfb\u7edf<\/p>\n<ul>\n<li>\u90e8\u7f72Prometheus &#043; Grafana\u6216Zabbix<\/li>\n<li>\u8bbe\u7f6e\u5173\u952e\u6307\u6807\u7684\u544a\u8b66\u9608\u503c<\/li>\n<li>\u4fdd\u7559\u5386\u53f2\u6027\u80fd\u6570\u636e\u8fdb\u884c\u8d8b\u52bf\u5206\u6790<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u5b9a\u671f\u7ef4\u62a4\u4efb\u52a1<\/p>\n<p> <span class=\"token comment\"># \u521b\u5efacron\u4f5c\u4e1a<\/span><br \/>\n$ <span class=\"token function\">crontab<\/span> -e<\/p>\n<p><span class=\"token comment\"># \u6bcf\u5468\u65e5\u51cc\u66681\u70b9\u6e05\u7406\u65e5\u5fd7<\/span><br \/>\n<span class=\"token number\">0<\/span> <span class=\"token number\">1<\/span> * * <span class=\"token number\">0<\/span> \/usr\/bin\/find \/var\/log -type f -name <span class=\"token string\">&#034;*.log.*&#034;<\/span> -mtime &#043;30 -delete<\/p>\n<p><span class=\"token comment\"># \u6bcf\u5929\u51cc\u66682\u70b9\u66f4\u65b0\u7d22\u5f15<\/span><br \/>\n<span class=\"token number\">0<\/span> <span class=\"token number\">2<\/span> * * * \/usr\/bin\/updatedb\n <\/li>\n<li>\n<p>\u8d44\u6e90\u5206\u914d\u7b56\u7565<\/p>\n<ul>\n<li>\u4e3a\u5173\u952e\u670d\u52a1\u4fdd\u7559\u4e13\u7528\u8d44\u6e90<\/li>\n<li>\u4f7f\u7528nice\u548cionice\u63a7\u5236\u540e\u53f0\u4efb\u52a1\u7684\u4f18\u5148\u7ea7<\/li>\n<li>\u907f\u514d\u8d44\u6e90\u4e89\u7528&#xff0c;\u7279\u522b\u662f\u5728\u6df7\u5408\u5de5\u4f5c\u8d1f\u8f7d\u73af\u5883\u4e2d<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u6027\u80fd\u91c7\u6837\u4e0e\u5206\u6790<\/p>\n<p> <span class=\"token comment\"># \u4f7f\u7528perf\u91c7\u6837CPU\u6027\u80fd\u4e8b\u4ef6<\/span><br \/>\n$ perf record -F <span class=\"token number\">99<\/span> -p <span class=\"token operator\">&lt;<\/span>PID<span class=\"token operator\">&gt;<\/span> -g &#8212; <span class=\"token function\">sleep<\/span> <span class=\"token number\">60<\/span><br \/>\n$ perf report\n <\/li>\n<h4>7.3 \u6784\u5efa\u6027\u80fd\u76d1\u63a7\u4eea\u8868\u677f<\/h4>\n<p>\u4f7f\u7528Grafana\u7b49\u5de5\u5177\u521b\u5efa\u7efc\u5408\u6027\u80fd\u4eea\u8868\u677f&#xff0c;\u5305\u542b\u4ee5\u4e0b\u9762\u677f&#xff1a;<\/p>\n<li>\n<p>\u7cfb\u7edf\u6982\u89c8<\/p>\n<ul>\n<li>CPU\u3001\u5185\u5b58\u3001\u78c1\u76d8\u548c\u7f51\u7edc\u4f7f\u7528\u7387<\/li>\n<li>\u7cfb\u7edf\u8d1f\u8f7d<\/li>\n<li>\u8fdb\u7a0b\u6570\u91cf<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u8d44\u6e90\u8be6\u7ec6\u4fe1\u606f<\/p>\n<ul>\n<li>CPU\u5404\u6838\u5fc3\u4f7f\u7528\u7387<\/li>\n<li>\u5185\u5b58\u5206\u5e03(\u4f7f\u7528\u4e2d\u3001\u7f13\u51b2\u533a\u3001\u7f13\u5b58)<\/li>\n<li>\u6bcf\u4e2a\u78c1\u76d8\u7684I\/O\u7edf\u8ba1<\/li>\n<li>\u6bcf\u4e2a\u7f51\u7edc\u63a5\u53e3\u7684\u6d41\u91cf<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u670d\u52a1\u5065\u5eb7\u72b6\u6001<\/p>\n<ul>\n<li>\u5173\u952e\u670d\u52a1\u72b6\u6001<\/li>\n<li>\u6570\u636e\u5e93\u8fde\u63a5\u548c\u67e5\u8be2\u6027\u80fd<\/li>\n<li>Web\u670d\u52a1\u5668\u8bf7\u6c42\u7387\u548c\u54cd\u5e94\u65f6\u95f4<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u544a\u8b66\u5386\u53f2<\/p>\n<ul>\n<li>\u8d44\u6e90\u74f6\u9888\u4e8b\u4ef6<\/li>\n<li>\u670d\u52a1\u4e2d\u65ad<\/li>\n<li>\u6027\u80fd\u964d\u7ea7<\/li>\n<\/ul>\n<\/li>\n<h3>\u603b\u7ed3<\/h3>\n<p>Linux\u7cfb\u7edf\u7684\u6027\u80fd\u76d1\u63a7\u548c\u4f18\u5316\u662f\u4e00\u9879\u6301\u7eed\u7684\u5de5\u4f5c&#xff0c;\u9700\u8981\u5168\u9762\u4e86\u89e3\u5404\u4e2a\u5b50\u7cfb\u7edf\u7684\u5de5\u4f5c\u539f\u7406\u548c\u76f8\u4e92\u5f71\u54cd\u3002\u901a\u8fc7\u672c\u6587&#xff0c;\u4f60\u5b66\u4f1a\u4e86&#xff1a;<\/p>\n<ul>\n<li>\u2705 \u4f7f\u7528\u5404\u79cd\u5de5\u5177\u76d1\u63a7Linux\u7cfb\u7edf\u6027\u80fd<\/li>\n<li>\u2705 \u8bc6\u522b\u548c\u8bca\u65adCPU\u3001\u5185\u5b58\u3001\u78c1\u76d8\u548c\u7f51\u7edc\u6027\u80fd\u74f6\u9888<\/li>\n<li>\u2705 \u9488\u5bf9\u4e0d\u540c\u8d44\u6e90\u5b9e\u65bd\u4f18\u5316\u7b56\u7565<\/li>\n<li>\u2705 \u9650\u5236\u548c\u7ba1\u7406\u8fdb\u7a0b\u8d44\u6e90\u4f7f\u7528<\/li>\n<li>\u2705 \u5b9e\u65bd\u5168\u9762\u7684\u6027\u80fd\u4f18\u5316\u6700\u4f73\u5b9e\u8df5<\/li>\n<\/ul>\n<p>\u8bb0\u4f4f&#xff0c;\u6027\u80fd\u4f18\u5316\u4e0d\u662f\u4e00\u52b3\u6c38\u9038\u7684\u5de5\u4f5c&#xff0c;\u800c\u662f\u9700\u8981\u6301\u7eed\u76d1\u63a7\u3001\u5206\u6790\u548c\u8c03\u6574\u7684\u8fc7\u7a0b\u3002\u968f\u7740\u7cfb\u7edf\u8d1f\u8f7d\u548c\u5e94\u7528\u9700\u6c42\u7684\u53d8\u5316&#xff0c;\u9700\u8981\u4e0d\u65ad\u8c03\u6574\u4f18\u5316\u7b56\u7565\u3002<\/p>\n<h3>\u5b9e\u8df5\u7ec3\u4e60<\/h3>\n<li>\u8bbe\u7f6e\u4e00\u4e2a\u57fa\u672c\u7684Prometheus &#043; Grafana\u76d1\u63a7\u7cfb\u7edf<\/li>\n<li>\u5bf9\u4e00\u4e2a\u9ad8\u8d1f\u8f7d\u670d\u52a1\u5668\u8fdb\u884c\u6027\u80fd\u5206\u6790&#xff0c;\u627e\u51fa\u4e3b\u8981\u74f6\u9888<\/li>\n<li>\u5b9e\u65bd\u672c\u6587\u4e2d\u63d0\u5230\u7684\u81f3\u5c115\u9879\u4f18\u5316\u63aa\u65bd&#xff0c;\u5e76\u6d4b\u91cf\u4f18\u5316\u6548\u679c<\/li>\n<li>\u521b\u5efa\u4e00\u4e2a\u81ea\u52a8\u5316\u811a\u672c&#xff0c;\u5b9a\u671f\u6536\u96c6\u7cfb\u7edf\u6027\u80fd\u6570\u636e\u5e76\u751f\u6210\u62a5\u544a<\/li>\n<hr \/>\n<p>&#x1f48c; \u5982\u679c\u4f60\u89c9\u5f97\u8fd9\u7bc7\u6587\u7ae0\u5bf9\u4f60\u6709\u5e2e\u52a9&#xff0c;\u8bf7\u4e0d\u8981\u5fd8\u8bb0\u70b9\u8d5e\u3001\u6536\u85cf\u548c\u5173\u6ce8&#xff01;\u4f60\u7684\u652f\u6301\u662f\u6211\u521b\u4f5c\u7684\u6700\u5927\u52a8\u529b&#xff01;<\/p>\n<p>\u2753 \u6709\u4efb\u4f55\u95ee\u9898\u6216\u5efa\u8bae&#xff0c;\u6b22\u8fce\u5728\u8bc4\u8bba\u533a\u7559\u8a00\u8ba8\u8bba&#xff01;<\/p>\n<p>&#x1f4e3; \u672c\u6587\u662f\u300a\u4ece\u5165\u95e8\u5230\u7cbe\u901a\u6e10\u8fdb\u5f0f\u5b66\u4e60Linux\u300b\u7cfb\u5217\u7684\u7b2c13\u7ae0\u3002\u4e0b\u4e00\u7ae0\u6211\u4eec\u5c06\u63a2\u8ba8Linux\u5bb9\u5668\u4e0e\u865a\u62df\u5316\u6280\u672f&#xff0c;\u656c\u8bf7\u671f\u5f85&#xff01;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb1k\u6b21\uff0c\u70b9\u8d5e12\u6b21\uff0c\u6536\u85cf23\u6b21\u3002Linux\u7cfb\u7edf\u7684\u6027\u80fd\u76d1\u63a7\u548c\u4f18\u5316\u662f\u4e00\u9879\u6301\u7eed\u7684\u5de5\u4f5c\uff0c\u9700\u8981\u5168\u9762\u4e86\u89e3\u5404\u4e2a\u5b50\u7cfb\u7edf\u7684\u5de5\u4f5c\u539f\u7406\u548c\u76f8\u4e92\u5f71\u54cd\u3002\u2705 \u4f7f\u7528\u5404\u79cd\u5de5\u5177\u76d1\u63a7Linux\u7cfb\u7edf\u6027\u80fd\u2705 \u8bc6\u522b\u548c\u8bca\u65adCPU\u3001\u5185\u5b58\u3001\u78c1\u76d8\u548c\u7f51\u7edc\u6027\u80fd\u74f6\u9888\u2705 \u9488\u5bf9\u4e0d\u540c\u8d44\u6e90\u5b9e\u65bd\u4f18\u5316\u7b56\u7565\u2705 \u9650\u5236\u548c\u7ba1\u7406\u8fdb\u7a0b\u8d44\u6e90\u4f7f\u7528\u2705 \u5b9e\u65bd\u5168\u9762\u7684\u6027\u80fd\u4f18\u5316\u6700\u4f73\u5b9e\u8df5\u8bb0\u4f4f\uff0c\u6027\u80fd\u4f18\u5316\u4e0d\u662f\u4e00\u52b3\u6c38\u9038\u7684\u5de5\u4f5c\uff0c\u800c\u662f\u9700\u8981\u6301\u7eed\u76d1\u63a7\u3001\u5206\u6790\u548c\u8c03\u6574\u7684\u8fc7\u7a0b\u3002\u968f\u7740\u7cfb\u7edf\u8d1f\u8f7d\u548c\u5e94\u7528\u9700\u6c42\u7684\u53d8\u5316\uff0c\u9700\u8981\u4e0d\u65ad\u8c03\u6574\u4f18\u5316\u7b56\u7565\u3002_linux\u8fd0\u7ef4\u6838\u5fc3\u80fd\u529b \u6027\u80fd\u76d1\u63a7\u4e0e\u4f18\u5316<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[58,56,43],"topic":[],"class_list":["post-50388","post","type-post","status-publish","format-standard","hentry","category-server","tag-linux","tag-56","tag-43"],"yoast_head":"<!-- This site is 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