{"id":3571,"date":"2019-06-26T13:46:06","date_gmt":"2019-06-26T05:46:06","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=3571"},"modified":"2019-07-18T18:53:25","modified_gmt":"2019-07-18T10:53:25","slug":"%e8%ae%b0%e4%b8%80%e6%ac%a1docker%e9%97%ae%e9%a2%98%e5%ae%9a%e4%bd%8dperf%ef%bc%8ciostat%e7%ad%89%e6%80%a7%e8%83%bd%e5%88%86%e6%9e%90","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/3571","title":{"rendered":"\u8bb0\u4e00\u6b21docker\u95ee\u9898\u5b9a\u4f4d(perf\uff0ciostat\u7b49\u6027\u80fd\u5206\u6790)"},"content":{"rendered":"

\u539f\u6587\u5730\u5740<\/a><\/p>\n

 <\/p>\n

\u00a0 \u00a0 \u80cc\u666f\u00a0 \u00a0<\/span><\/p>\n

\n
\n

\u6700\u8fd1\u53c2\u4e0e\u7684\u9879\u76ee\u662f\u57fa\u4e8e OpenStack \u63d0\u4f9b\u5bb9\u5668\u7ba1\u7406\u80fd\u529b\uff0c\u4e30\u5bcc\u516c\u53f8 IaaS \u5e73\u53f0\u7684\u80fd\u529b\u3002\u65e5\u5e38\u4e3b\u8981\u5de5\u4f5c\u5c31\u662f\u5728\u5f00\u6e90\u7684 novadocker \u9879\u76ee\uff08\u5f00\u6e90\u793e\u533a\u5df2\u505c\u6b62\u5f00\u53d1\uff09\u57fa\u7840\u4e0a\u8fdb\u884c\u589e\u5f3a\uff0c\u4e0e\u516c\u53f8\u7684\u5176\u4ed6\u4e1a\u52a1\u7ec4\u4ef6\u8fdb\u884c\u5bf9\u63a5\u7b49\u3002<\/p>\n

\u5468\u672b\u7ed9\u4e0b\u6e38\u90e8\u95e8\u7684 IaaS \u5e73\u53f0\u8fdb\u884c\u4e86\u4e00\u6b21\u5347\u7ea7\uff0c\u4e3b\u8981\u5347\u7ea7\u4e86\u5e95\u5c42\u64cd\u4f5c\u7cfb\u7edf\uff0c\u57fa\u672c\u7528\u4f8b\u8dd1\u901a\u8fc7\uff0c\u6ca1\u51fa\u73b0\u4ec0\u4e48\u95ee\u9898\uff0c\u7686\u5927\u6b22\u559c\u3002<\/p>\n

\u7ed3\u679c\u5468\u4e00\u4e00\u5230\u516c\u53f8\u5c31\u4f20\u6765\u5669\u8017\uff0c\u6027\u80fd\u6d4b\u8bd5\u53d1\u73b0\u4e1a\u52a1\u8fdb\u7a0b\u8fd0\u884c\u5728\u5bb9\u5668\u4e2d\u6bd4\u4e1a\u52a1\u8fdb\u7a0b\u8fd0\u884c\u5728\u5bbf\u4e3b\u673a\u4e0a\u541e\u5410\u91cf\u4e0b\u964d\u4e86 100 \u500d\uff0c\u8fd9\u8ba9\u5468\u4e00\u663e\u5f97\u66f4\u52a0\u9634\u6697\u3002<\/p>\n

\u5468\u4e00<\/p>\n

\u5148\u627e\u4e0b\u6e38\u4e86\u89e3\u4e86\u4e0b\u4e1a\u52a1\u6a21\u578b\uff0c\u4ed6\u4eec\u8bf4\u5df2\u7ecf\u628a\u4e1a\u52a1\u6a21\u578b\u6700\u7b80\u5316\u4e86\uff0c\u5f53\u524d\u7684\u6a21\u5f0f\u662f\uff1a\u4e1a\u52a1\u8fdb\u7a0b\u8fd0\u884c\u5728\u5bb9\u5668\u4e2d\uff0c\u901a\u8fc7\u4e0e\u4e3b\u673a\u5171\u4eab IPC namespace \u7684\u65b9\u5f0f\u6765\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u4e0e\u5bbf\u4e3b\u673a\u4e0a\u7684 Daemon \u8fdb\u7a0b\u8fdb\u884c\u901a\u4fe1\uff0c\u6574\u4e2a\u8fc7\u7a0b\u4e0d\u6d89\u53ca\u78c1\u76d8\u8bfb\u5199\u3001\u7f51\u7edc\u4ea4\u4e92\u7b49\u3002<\/p>\n

\u64b8\u8d77\u8896\u5b50\u5f00\u59cb\u5e72\uff0c\u5b9a\u4f4d\u7b2c\u4e00\u6b65\uff0c\u5f53\u7136\u662f\u627e\u74f6\u9888\u4e86\uff0c\u5206\u6790\u4e0b\u5230\u5e95\u95ee\u9898\u51fa\u5728\u54ea\u3002<\/p>\n

top<\/p>\n

\u7528\u5230\u7684\u7b2c\u4e00\u4e2a\u547d\u4ee4\u81ea\u7136\u662f top\uff0ctop \u662f linux \u91cc\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u547d\u4ee4\uff0c\u901a\u8fc7\u5b83\u57fa\u672c\u4e0a\u80fd\u770b\u5230\u7cfb\u7edf\u4e2d\u7684\u6240\u6709\u6307\u6807\u3002<\/p>\n

\"\"<\/p>\n

\u4e0a\u9762\u662f top \u547d\u4ee4\u8fd0\u884c\u65f6\u7684\u4e00\u4e2a\u793a\u610f\u56fe\uff0c\u6bd4\u8f83\u91cd\u8981\u7684\u6307\u6807\u90fd\u5df2\u7ecf\u6807\u4e86\u51fa\u6765\uff1a<\/p>\n

1 \u5904\u8868\u793a\u7cfb\u7edf\u8d1f\u8f7d\uff0c\u5b83\u8868\u793a\u5f53\u524d\u6b63\u5728\u7b49\u5f85\u88ab cpu \u8c03\u5ea6\u7684\u8fdb\u7a0b\u6570\u91cf\uff0c\u8fd9\u4e2a\u503c\u5c0f\u4e8e\u7cfb\u7edf vcpu \u6570\uff08\u8d85\u7ebf\u7a0b\u6570\uff09\u7684\u65f6\u5019\u662f\u6bd4\u8f83\u6b63\u5e38\u7684\uff0c\u4e00\u65e6\u5927\u4e8e vcpu \u6570\uff0c\u5219\u8bf4\u660e\u5e76\u53d1\u8fd0\u884c\u7684\u8fdb\u7a0b\u592a\u591a\u4e86\uff0c\u6709\u8fdb\u7a0b\u8fdf\u8fdf\u5f97\u4e0d\u5230 cpu \u65f6\u95f4\u3002\u8fd9\u79cd\u60c5\u51b5\u7ed9\u7528\u6237\u7684\u76f4\u89c2\u611f\u53d7\u5c31\u662f\u6572\u4efb\u4f55\u547d\u4ee4\u90fd\u5361\u3002<\/p>\n

2 \u5904\u8868\u793a\u5f53\u524d\u7cfb\u7edf\u7684\u603b\u8fdb\u7a0b\u6570\uff0c\u901a\u5e38\u8be5\u503c\u8fc7\u5927\u7684\u65f6\u5019\u5c31\u4f1a\u5bfc\u81f4 load average \u8fc7\u5927\u3002<\/p>\n

3 \u5904\u8868\u793a cpu \u7684\u7a7a\u95f2\u65f6\u95f4\uff0c\u53ef\u4ee5\u53cd\u5e94 cpu \u7684\u7e41\u5fd9\u7a0b\u5ea6\uff0c\u8be5\u503c\u8f83\u9ad8\u65f6\u8868\u793a\u7cfb\u7edf cpu \u5904\u4e8e\u6bd4\u8f83\u6e05\u95f2\u7684\u72b6\u6001\uff0c\u5982\u679c\u8be5\u503c\u8f83\u4f4e\uff0c\u5219\u8bf4\u660e\u7cfb\u7edf\u7684 cpu \u6bd4\u8f83\u7e41\u5fd9\u3002\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u6709\u4e9b\u65f6\u5019\u8be5\u503c\u6bd4\u8f83\u9ad8\uff0c\u8868\u793a cpu \u6bd4\u8f83\u6e05\u95f2\uff0c\u4f46\u662f load average \u4f9d\u7136\u6bd4\u8f83\u9ad8\uff0c\u8fd9\u79cd\u60c5\u51b5\u5f88\u53ef\u80fd\u5c31\u662f\u56e0\u4e3a\u8fdb\u7a0b\u6570\u592a\u591a\uff0c\u8fdb\u7a0b\u5207\u6362\u5360\u7528\u4e86\u5927\u91cf\u7684 cpu \u65f6\u95f4\uff0c\u4ece\u800c\u6324\u5360\u4e86\u4e1a\u52a1\u8fd0\u884c\u9700\u8981\u4f7f\u7528\u7684 cpu \u65f6\u95f4\u3002<\/p>\n

4 \u5904\u8868\u793a\u8fdb\u7a0b IO \u7b49\u5f85\u7684\u65f6\u95f4\uff0c\u8be5\u503c\u8f83\u9ad8\u65f6\u8868\u793a\u7cfb\u7edf\u7684\u74f6\u9888\u53ef\u80fd\u51fa\u73b0\u5728\u78c1\u76d8\u548c\u7f51\u7edc\u3002<\/p>\n

5 \u5904\u8868\u793a\u7cfb\u7edf\u7684\u5269\u4f59\u5185\u5b58\uff0c\u53cd\u5e94\u4e86\u7cfb\u7edf\u7684\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n

6 \u5904\u8868\u793a\u5355\u4e2a\u8fdb\u7a0b\u7684 cpu \u548c\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u3002\u5173\u4e8e top \u547d\u4ee4\u4e2d\u5404\u4e2a\u6307\u6807\u542b\u4e49\u7684\u8fdb\u4e00\u6b65\u63cf\u8ff0\u53ef\u4ee5\u53c2\u89c1\uff1a<\/p>\n

http:\/\/www.jb51.net\/LINUXjishu\/34604.html<\/p>\n

\u4f7f\u7528 top \u547d\u4ee4\u67e5\u770b\u4e86\u4e0b\u7cfb\u7edf\u60c5\u51b5\uff0c\u53d1\u73b0\u4e00\u5207\u6b63\u5e38\u3002load average \u4e5f\u4e0d\u9ad8\uff0ctask \u4e5f\u4e0d\u591a\uff0ccpu \u548c\u5185\u5b58\u90fd\u8fd8\u5f88\u7a7a\u95f2\uff0c\u5c31\u8fde IO \u7b49\u5f85\u65f6\u95f4\u90fd\u5f88\u4f4e\uff0c\u4e5f\u6ca1\u6709\u54ea\u4e2a\u8fdb\u7a0b\u7684 cpu \u548c\u5185\u5b58\u4f7f\u7528\u7387\u504f\u9ad8\uff0c\u4e00\u5207\u90fd\u5f88\u548c\u8c10\uff0c\u6ca1\u6709\u74f6\u9888\uff01<\/p>\n

\u5f53\u7136\uff0c\u6ca1\u6709\u74f6\u9888\u662f\u4e0d\u53ef\u80fd\u7684\u3002\u7531\u4e8e\u6211\u4eec\u7684\u5bb9\u5668\u90fd\u662f\u7ed1\u6838\u7684\uff0c\u6240\u4ee5\u5f88\u6709\u53ef\u80fd\u662f\u5206\u914d\u7ed9\u5bb9\u5668\u7684\u90a3\u4e9b\u6838\u662f\u5904\u4e8e\u7e41\u5fd9\u72b6\u6001\uff0c\u800c\u7531\u4e8e\u603b\u6838\u6570\u8f83\u591a\uff0c\u5c06 cpu \u7684\u4f7f\u7528\u7387\u7ed9\u62c9\u4e86\u4e0b\u6765\u3002\u4e8e\u662f\u53c8\u6309\u4e0b\u4e86\u201c1\u201d\u952e\uff0c\u5207\u6362\u5230\u8be6\u7ec6\u6a21\u5f0f\u4e0b\uff1a<\/p>\n

\"\"<\/p>\n

\u5728\u8fd9\u79cd\u6a21\u5f0f\u4e0b\uff0c\u53ef\u4ee5\u770b\u5230\u6bcf\u4e2a vcpu \u7684\u4f7f\u7528\u60c5\u51b5\u3002\u4e00\u5207\u4f9d\u7136\u5f88\u548c\u8c10\uff0c\u8be1\u5f02\u7684\u548c\u8c10\u3002<\/p>\n

\u770b\u6765\u4ece cpu \u8fd9\u5757\u662f\u770b\u4e0d\u51fa\u6765\u4ec0\u4e48\u4e86\uff0c\u90a3\u5c31\u7ee7\u7eed\u770b\u770b\u662f\u4e0d\u662f\u78c1\u76d8\u641e\u7684\u9b3c\u5427\u3002<\/p>\n

iostat<\/p>\n

iostat \u547d\u4ee4\u662f\u7528\u6765\u67e5\u770b\u78c1\u76d8\u4f7f\u7528\u60c5\u51b5\u7684\u4e00\u4e2a\u547d\u4ee4\uff0c\u7ecf\u9a8c\u544a\u8bc9\u6211\u4eec\uff0c\u78c1\u76d8\u548c\u7f51\u7edc\u5df2\u7ecf\u6210\u4e3a\u5f71\u54cd\u6027\u80fd\u7684\u6700\u5927\u5acc\u7591\u72af\u3002<\/p>\n

\"\"<\/p>\n

\u4f7f\u7528 iostat \u5de5\u5177\u65f6\uff0c\u901a\u5e38\u53ea\u7528\u5173\u6ce8\u6700\u540e\u4e00\u884c\uff08%util\uff09\u5373\u53ef\uff0c\u5b83\u53cd\u6620\u4e86\u78c1\u76d8\u7684\u7e41\u5fd9\u7a0b\u5ea6\u3002\u867d\u7136\u4e0b\u6e38\u90e8\u95e8\u5df2\u7ecf\u8bf4\u4e86\u4ed6\u4eec\u8dd1\u7684\u7528\u4f8b\u662f\u4e00\u4e2a\u7eaf\u5185\u5b58\u7684\u573a\u666f\uff0c\u4e0d\u6d89\u53ca\u78c1\u76d8\u8bfb\u5199\u3002\u4f46\u662f\u5ba2\u6237\u7684\u8bdd\u4fe1\u5f97\u4f4f\uff0c\u6bcd\u732a\u4e5f\u80fd\u4e0a\u6811\uff0c\u6211\u8fd8\u662f\u8981\u8dd1\u4e00\u4e0b iostat\uff0c\u770b\u4e0b\u78c1\u76d8\u60c5\u51b5\u600e\u4e48\u6837\u3002\u7ed3\u679c\uff0c\u4f9d\u65e7\u5f88\u548c\u8c10\uff0c\u78c1\u76d8\u4f7f\u7528\u7387\u57fa\u672c\u4e3a\u96f6\u3002<\/p>\n

\u540e\u9762\u8fd8\u5c1d\u8bd5\u4e86\u89c2\u5bdf\u7f51\u7edc\u6307\u6807\uff0c\u53d1\u73b0\u786e\u5b9e\u4e5f\u6ca1\u6709\u7f51\u7edc\u541e\u5410\uff0c\u5b8c\u4e86\uff0c\u770b\u6765\u95ee\u9898\u6ca1\u90a3\u4e48\u7b80\u5355\u3002<\/p>\n

\u5468\u4e8c<\/p>\n

\u867d\u7136\u5468\u4e00\u770b\u4f3c\u767d\u5fd9\u6d3b\u4e86\u4e00\u5929\uff0c\u4f46\u662f\u4e5f\u5f97\u5230\u4e86\u4e00\u4e2a\u91cd\u8981\u7ed3\u8bba\uff1a\u8fd9\u4e2a\u95ee\u9898\u4e0d\u7b80\u5355\uff01\u4e0d\u8fc7\u7b80\u5355\u7684\u5728\u8d44\u6e90\u5c42\u9762\u65f6\u5206\u6790\u4e0d\u51fa\u6765\u5565\u4e86\uff0c\u5f97\u5bc4\u51fa\u6027\u80fd\u5206\u6790\u7684\u5927\u6740\u5668\u2014\u2014perf \u4e86\u3002<\/p>\n

perf+ \u706b\u7130\u56fe<\/p>\n

perf \u662f linux \u4e0b\u4e00\u4e2a\u975e\u5e38\u5f3a\u5927\u7684\u6027\u80fd\u5206\u6790\u5de5\u5177\uff0c\u901a\u8fc7\u5b83\u53ef\u4ee5\u5206\u6790\u51fa\u8fdb\u7a0b\u8fd0\u884c\u8fc7\u7a0b\u4e2d\u7684\u4e3b\u8981\u65f6\u95f4\u90fd\u82b1\u5728\u4e86\u54ea\u4e9b\u5730\u65b9\u3002<\/p>\n

\u4e4b\u524d\u6ca1\u592a\u4f7f\u7528\u8fc7 perf\uff0c\u56e0\u6b64\u521a\u5f00\u59cb\u8fdb\u884c\u5206\u6790\uff0c\u5c31\u81ea\u7136\u800c\u7136\u5730\u76f4\u63a5\u4f7f\u7528\u4e0a\u4e86 perf+ \u706b\u7130\u56fe\u8fd9\u79cd\u6700\u5e38\u89c1\u7684\u7ec4\u5408\uff1a<\/p>\n

    \n
  1. \u5b89\u88c5 perf\u3002yum install perf<\/li>\n
  2. \u4e0b\u8f7d\u706b\u7130\u56fe\u5de5\u5177\u3002git clone https:\/\/github.com\/brendangregg\/FlameGraph.git<\/li>\n
  3. \u91c7\u6837\u3002perf record -e cpu-clock -g -p 1572\uff08\u4e1a\u52a1\u8fdb\u7a0b id\uff09\n

    \u4e00\u6bb5\u65f6\u95f4\uff08\u901a\u5e38 20s \u8db3\u591f\uff09\u4e4b\u540e ctrl+c\uff0c\u7ed3\u675f\u91c7\u6837\u3002<\/li>\n

  4. \u7528 perf script \u5de5\u5177\u5bf9 perf.data \u8fdb\u884c\u89e3\u6790\u3002perf script -i perf.data &> perf.unfold\u3002\n

    PS\uff1a\u5982\u679c\u5728\u5bb9\u5668\u4e2d\u8fd0\u884c\u7684\u7a0b\u5e8f\u6709\u8f83\u591a\u7684\u4f9d\u8d56\uff0c\u5219\u8be5\u547d\u4ee4\u89e3\u6790\u51fa\u6765\u7684\u7b26\u53f7\u4e2d\u53ef\u80fd\u4f1a\u6709\u8f83\u591a\u7684\u201cUnregistered symbol\u2026\u201d\u9519\u8bef\uff0c\u6b64\u65f6\u9700\u8981\u901a\u8fc7--symfs<\/code>\u53c2\u6570\u6307\u5b9a\u5bb9\u5668\u7684rootfs<\/code>\u4f4d\u7f6e\u6765\u89e3\u51b3\u8be5\u95ee\u9898\u3002\u83b7\u53d6\u5bb9\u5668rootfs<\/code>\u7684\u65b9\u6cd5\u6839\u636e docker \u7684 storagedriver \u7684\u4e0d\u540c\u800c\u6709\u6240\u4e0d\u540c\uff0c\u5982\u679c\u662fdevice mapper<\/code>\u7c7b\u578b\uff0c\u5219\u53ef\u4ee5\u901a\u8fc7 dockerinspect \u627e\u5230\u5bb9\u5668\u7684rootfs<\/code>\u6240\u5728\u4f4d\u7f6e\uff0c\u5982\u679c\u662foverlay<\/code>\u7c7b\u578b\uff0c\u5219\u9700\u8981\u901a\u8fc7 dockerexport \u547d\u4ee4\u5c06\u8be5\u5bb9\u5668\u7684rootfs<\/code>\u5bfc\u51fa\u6765\uff0c\u5982\u679c\u662f\u5bcc\u5bb9\u5668\u7684\u8bdd\uff0c\u4e00\u822c\u90fd\u6709\u5916\u7f6e\u7684rootfs<\/code>\uff0c\u76f4\u63a5\u4f7f\u7528\u5373\u53ef\u3002<\/li>\n

  5. \u5c06 perf.unfold \u4e2d\u7684\u7b26\u53f7\u8fdb\u884c\u6298\u53e0\u3002.\/stackcollapse-perf.pl perf.unfold &> perf.folded<\/li>\n
  6. \u6700\u540e\u751f\u6210 svg \u56fe\u3002\/flamegraph.pl perf.folded > perf.svg<\/li>\n<\/ol>\n

    \u6700\u540e\u5c31\u80fd\u5f97\u5230\u50cf\u4e0b\u9762\u8fd9\u79cd\u6837\u5b50\u7684\u6f02\u4eae\u56fe\u7247\u3002\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u7a0b\u5e8f\u4e2d\u6709\u4e00\u4e9b\u51fd\u6570\u5360\u7528\u4e86\u5927\u91cf\u7684 CPU \u65f6\u95f4\uff0c\u5219\u4f1a\u5728\u56fe\u7247\u4e2d\u4ee5\u957f\u6a2a\u6761\u7684\u6837\u5f0f\u51fa\u73b0\uff0c\u8868\u793a\u8be5\u51fd\u6570\u5360\u7528\u4e86\u5927\u91cf\u7684 CPU \u65f6\u95f4\u3002<\/p>\n

    \"\"<\/p>\n

    \u7136\u800c\uff0cperf+ \u706b\u7130\u56fe\u5728\u8fd9\u6b21\u5e76\u6ca1\u6709\u8d77\u5230\u592a\u5927\u7684\u4f5c\u7528\uff0c\u53cd\u590d\u7edf\u8ba1\u4e86\u5f88\u591a\u6b21\uff0c\u5e76\u6ca1\u6709\u51fa\u73b0\u68a6\u5bd0\u4ee5\u6c42\u7684\u201c\u957f\u6a2a\u6761\u201d\uff0c\u8fd8\u662f\u5f88\u548c\u8c10\u3002<\/p>\n

    perf stat<\/p>\n

    perf+ \u706b\u7130\u56fe\u5e76\u6ca1\u6709\u8d77\u5230\u5f88\u597d\u7684\u6548\u679c\uff0c\u5c31\u60f3\u6362\u4e2a\u5de5\u5177\u7ee7\u7eed\u8bd5\u8bd5\uff0c\u4f46\u662f\u627e\u6765\u627e\u53bb\u3001\u8bf7\u6559\u5927\u795e\uff0c\u4e5f\u6ca1\u627e\u5230\u66f4\u597d\u7684\u5de5\u5177\uff0c\u53ea\u597d\u7ee7\u7eed\u7814\u7a76 perf \u8fd9\u4e2a\u5de5\u5177\u3002<\/p>\n

    perf \u9664\u4e86\u4e0a\u9762\u63d0\u5230\u7684 record\uff08\u8bb0\u5f55\u4e8b\u4ef6\uff09\u3001script\uff08\u89e3\u6790\u8bb0\u5f55\u7684\u4e8b\u4ef6\uff09\u547d\u4ee4\u4e4b\u5916\uff0c\u8fd8\u6709\u5176\u4ed6\u4e00\u4e9b\u547d\u4ee4\uff0c\u5e38\u7528\u7684\u6709 report\uff08\u4e0e script \u7c7b\u4f3c\uff0c\u90fd\u662f\u5bf9 perf record \u8bb0\u5f55\u7684\u4e8b\u4ef6\u8fdb\u884c\u89e3\u6790\uff0c\u4e0d\u540c\u4e4b\u5904\u5728\u4e8e report \u76f4\u63a5\u89e3\u6790\u7a0b\u5e8f\u4e2d\u7684\u8fd0\u884c\u70ed\u70b9\uff0cscript \u7684\u6269\u5c55\u6027\u66f4\u5f3a\u4e00\u70b9\uff0c\u53ef\u4ee5\u8c03\u7528\u5916\u90e8\u811a\u672c\u5bf9\u4e8b\u4ef6\u6570\u636e\u8fdb\u884c\u89e3\u6790\uff09\u3001stat\uff08\u8bb0\u5f55\u8fdb\u7a0b\u4e00\u6bb5\u65f6\u95f4\u4e4b\u5185\u89e6\u53d1\u7684\u4e8b\u4ef6\u6570\uff09\u3001top\uff08\u5b9e\u65f6\u5206\u6790\u7a0b\u5e8f\u8fd0\u884c\u65f6\u70ed\u70b9\uff09\u3001list\uff08\u5217\u51fa perf \u53ef\u4ee5\u8bb0\u5f55\u7684\u4e8b\u4ef6\u6570\uff09\u7b49\u547d\u4ee4\u3002<\/p>\n

    \u8fd9\u4e9b\u547d\u4ee4\u6328\u4e2a\u8bd5\u4e86\u4e2a\u904d\uff0c\u7ec8\u4e8e\u5728 perf stat \u547d\u4ee4\u8fd9\u5757\u6709\u4e86\u7a81\u7834\uff1a<\/p>\n

    \u4f7f\u7528 perf stat \u5bf9\u4e1a\u52a1\u8fdb\u7a0b\u8fd0\u884c\u5728\u7269\u7406\u673a\u548c\u5bb9\u5668\u4e0a\u5206\u522b\u8fdb\u884c\u7edf\u8ba1\uff0c\u53d1\u73b0\u4e1a\u52a1\u8fdb\u7a0b\u8fd0\u884c\u5728\u5bb9\u5668\u4e2d\u65f6\uff0c\u5927\u90e8\u5206\u4e8b\u4ef6\uff08task-clock\u3001context-switches\u3001cycles\u3001instructions \u7b49\uff09\u7684\u89e6\u53d1\u6b21\u6570\u662f\u8fd0\u884c\u5728\u7269\u7406\u673a\u4e0a\u65f6\u7684\u767e\u5206\u4e4b\u4e00\u3002<\/p>\n

    \u8fd9\u662f\u4ec0\u4e48\u539f\u56e0\u5462\uff1f\u4e00\u5b9a\u662f\u4ec0\u4e48\u4e1c\u897f\u963b\u585e\u4f4f\u4e86\u7a0b\u5e8f\u7684\u8fd0\u8f6c\uff0c\u8fd9\u4e2a\u4e1c\u897f\u662f\u4ec0\u4e48\u5462\uff1f<\/p>\n

    \u524d\u9762\u5df2\u7ecf\u5206\u6790\u4e86\uff0c\u4e0d\u662f\u78c1\u76d8\uff0c\u4e0d\u662f\u7f51\u7edc\uff0c\u4e5f\u4e0d\u662f\u5185\u5b58\uff0c\u66f4\u4e0d\u662f cpu\uff0c\u90a3\u8fd8\u6709\u4ec0\u4e48\u5462\uff1f\uff1f<\/p>\n

    \u5468\u4e09<\/p>\n

    \u662f\u4ec0\u4e48\u539f\u56e0\u963b\u585e\u4f4f\u4e86\u7a0b\u5e8f\u7684\u8fd0\u8f6c\u5462\uff1f\u767e\u601d\u4e0d\u5f97\u5176\u89e3\uff0c\u767e\u95ee\u4e0d\u5f97\u5176\u89e3\uff0c\u767e\u731c\u4e0d\u5f97\u5176\u89e3\uff0c\u5f97\uff0c\u8fd8\u662f\u5f97\u52a8\u624b\uff0c\u4e0a\u63a7\u5236\u53d8\u91cf\u6cd5\u3002<\/p>\n

    \u8fd0\u884c\u5728\u5bb9\u5668\u4e2d\u7684\u7a0b\u5e8f\u548c\u8fd0\u884c\u5728\u7269\u7406\u673a\u4e0a\u6709\u4ec0\u4e48\u533a\u522b\u5462\uff1f\u6211\u4eec\u77e5\u9053\uff0cdocker \u5bb9\u5668 =cgroup+namespace+secomp+capability+selinux\uff0c\u90a3\u4e48\u5c31\u628a\u8fd9\u4e9b\u6280\u672f\u4e00\u4e2a\u4e2a\u90fd\u53bb\u6389\uff0c\u770b\u5230\u5e95\u662f\u54ea\u4e2a\u7279\u6027\u641e\u7684\u9b3c\u3002<\/p>\n

    \u5728\u8fd9 5 \u4e2a\u6280\u672f\u4e2d\uff0c\u540e\u4e09\u4e2a\u90fd\u662f\u5b89\u5168\u76f8\u5173\u7684\uff0c\u90fd\u6709\u5f00\u5173\u53ef\u4ee5\u63a7\u5236\uff0c\u7ecf\u8fc7\u6d4b\u8bd5\uff0c\u53d1\u73b0\u628a\u540e\u4e09\u4e2a\u90fd\u5173\u6389\u4e4b\u540e\uff0c\u6027\u80fd\u8fd8\u662f\u5f88\u5dee\uff0c\u8bf4\u660e\u8fd9 3 \u4e2a\u6280\u672f\u662f\u65e0\u8f9c\u7684\uff0c\u5f00\u59cb\u6392\u67e5 cgroup \u548c namespace\u3002<\/p>\n

    \u9996\u5148\u6000\u7591\u7684\u5f53\u7136\u662f cgroup\uff0c\u6bd5\u7adf\u5b83\u5c31\u662f\u505a\u8d44\u6e90\u9650\u5236\u7684\uff0c\u5f88\u6709\u53ef\u80fd\u4e00\u4e0d\u5c0f\u5fc3\u9650\u5236\u9519\u4e86\uff0c\u5c31\u628a\u4e1a\u52a1\u7ed9\u9650\u5236\u4e86\u3002<\/p>\n

    cgexec<\/p>\n

    cgexec \u662f cgroup \u63d0\u4f9b\u7684\u4e00\u4e2a\u5de5\u5177\uff0c\u53ef\u4ee5\u5728\u542f\u52a8\u65f6\u5c31\u5c06\u7a0b\u5e8f\u8fd0\u884c\u5230\u67d0\u4e2a cgroup \u4e2d\uff0c\u56e0\u6b64\u6211\u4eec\u53ef\u4ee5\u5c06\u4e1a\u52a1\u7a0b\u5e8f\u8fd0\u884c\u5728\u7269\u7406\u673a\u4e0a\uff0c\u4f46\u662f\u653e\u5230\u4e1a\u52a1\u5bb9\u5668\u6240\u5728\u7684 cgroup \u4e2d\uff0c\u770b\u770b\u6027\u80fd\u4f1a\u4e0d\u4f1a\u4e0b\u964d\u3002<\/p>\n

    \u5177\u4f53\u7528\u6cd5\u5982\u4e0b\uff1a<\/p>\n

    cgexec -g *:\/system.slice\/docker-03<\/span>c2dd57ba123879abab6f7b6da5192a127840534990c515be325450b7193c11.scope .\/run<\/span>.sh<\/span><\/code><\/pre>\n
    \u901a\u8fc7\u8be5\u547d\u4ee4\u5373\u53ef\u5c06 run.sh \u8fd0\u884c\u5728\u4e0e\u5bb9\u5668 03c2dd57 \u76f8\u540c\u7684 cgroup \u4e2d\u3002\u5728\u591a\u6b21\u6d4b\u8bd5\u4e4b\u540e\uff0c\u53d1\u73b0\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u4e1a\u52a1\u8fdb\u7a0b\u7684\u8fd0\u884c\u901f\u5ea6\u6ca1\u6709\u53d7\u5230\u5f71\u54cd\uff0ccgroup \u88ab\u6d17\u767d\uff0c\u90a3\u4e48\u771f\u76f8\u53ea\u6709\u4e00\u4e2a\u2014\u2014\u51f6\u624b\u5c31\u662f namespace\u3002<\/p>\n
    \u5468\u56db<\/p>\n
    \u867d\u7136\u8bf4\u51f6\u624b\u5df2\u7ecf\u786e\u5b9a\u662f namespace\uff0c\u4f46\u662f namespace \u5bb6\u65cf\u4e5f\u6709\u4e00\u5927\u7968\u4eba\uff0c\u6709 ipc namespace\u3001pid namespace \u7b49\u7b49\uff0c\u8fd8\u9700\u8981\u8fdb\u4e00\u6b65\u786e\u5b9a\u771f\u51f6\u3002<\/p>\n
    nsenter<\/p>\n
    nsenter \u662f\u4e00\u4e2a namespace \u76f8\u5173\u7684\u5de5\u5177\uff0c\u901a\u8fc7\u5b83\u53ef\u4ee5\u8fdb\u5165\u67d0\u4e2a\u8fdb\u7a0b\u6240\u5728\u7684 namespace\u3002\u5728 docker exec \u547d\u4ee4\u51fa\u73b0\u4e4b\u524d\uff0c\u5b83\u552f\u4e00\u4e00\u4e2a\u53ef\u4ee5\u8fdb\u5165 docker \u5bb9\u5668\u7684\u5de5\u5177\uff0c\u5728 docker exec \u51fa\u73b0\u4e4b\u540e\uff0cnsenter \u4e5f\u7531\u4e8e\u5176\u53ef\u4ee5\u9009\u62e9\u8fdb\u5165\u54ea\u4e9b namespace \u800c\u6210\u4e3a docker \u95ee\u9898\u5b9a\u4f4d\u7684\u4e00\u4e2a\u6781\u5176\u91cd\u8981\u7684\u5de5\u5177\u3002<\/p>\n
    \u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\uff0c\u5373\u53ef\u8fdb\u5165\u5bb9\u5668\u6240\u5728\u7684 mount namespace\u3002<\/p>\n
    nsenter --target $(docker inspect --format '{{.State.Pid}}'<\/span> \u5bb9\u5668 id) --mount bash<\/code><\/pre>\n
    \u540c\u7406\uff0c\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u5373\u53ef\u8fdb\u5165\u5bb9\u5668\u6240\u5728\u7684 IPC namespace \u548c pid namespace\u3002<\/p>\n
    nsenter --target $(docker inspect --format '{{.State.Pid}}'<\/span> \u5bb9\u5668 id) --ipc --pid bash<\/code><\/pre>\n
    \u5728\u4e0d\u65ad\u7684\u5c06\u4e1a\u52a1\u8fdb\u7a0b\u5728\u5404\u4e2a namespace \u4e4b\u95f4\u5207\u6362\u540e\uff0c\u7ec8\u4e8e\u8fdb\u4e00\u6b65\u9501\u5b9a\u4e86\u771f\u51f6\uff1amount namespace\u3002\u6d4b\u8bd5\u53d1\u73b0\uff0c\u4e00\u65e6\u5c06\u4e1a\u52a1\u8fdb\u7a0b\u653e\u7f6e\u5230\u5bb9\u5668\u6240\u5728\u7684 mount namespace\uff0c\u6027\u80fd\u5c31\u4f1a\u6025\u5267\u4e0b\u964d\u3002<\/p>\n
    \u8fd9\u662f\u4e3a\u4ec0\u4e48\u5462\uff1f\u8fd9\u662f\u4e3a\u4ec0\u4e48\u5462\uff1fmount namespace \u5230\u5e95\u505a\u4e86\u4ec0\u4e48\uff0c\u4f1a\u6709\u8fd9\u4e48\u5927\u7684\u5f71\u54cd\uff1f<\/p>\n
    \u79bb\u5f00\u516c\u53f8\u65f6\u5df2\u7ecf\u65f6 12 \u70b9\uff0c\u9694\u58c1\u5de5\u4f4d\u7684\u4e13\u5bb6\u8fd8\u5728\u90a3\u7535\u8bdd\u4f1a\u8bae\uff0c\u201c\u6211\u770b\u54c8\uff0c\u8fd9\u4e00\u5e27\uff0c\u5728\u8fd9\u4e2a\u8282\u70b9\u8fd8\u662f\u6709\u7684\uff0c\u4f46\u662f\u5230\u4e86\u8fd9\u5462\uff0c\u5c31\u6ca1\u4e86\uff0c\u5b83\u3002\u3002\u201d\uff0c\u201c\u90a3\u662f\u627e\u5230\u4e22\u5305\u539f\u56e0\u4e86\uff1f\u201d\uff0c\u201c\u522b\u6025\u561b\uff0c\u6211\u6162\u6162\u770b\uff0c\u770b\u8fd9\u4e2a\u8282\u70b9\u3002\u201d\u3002<\/p>\n
    \u5728\u56de\u5bb6\u7684\u51fa\u79df\u8f66\u4e0a\uff0c\u60f3\u60f3\u8fd9\u4e2a\u95ee\u9898\u5df2\u7ecf\u56db\u5929\u4e86\uff0c\u60f3\u60f3\u9694\u58c1\u5de5\u4f4d\u7684\u4e13\u5bb6\u90fd\u8981\u6210\u795e\u4e86\uff0c\u8fd8\u662f\u4f1a\u9047\u5230\u68d8\u624b\u7684\u95ee\u9898\uff0c\u7a81\u7136\u6709\u79cd\u5d29\u6e83\u7684\u611f\u89c9\uff0c\u8d39\u4e86\u4e5d\u725b\u4e8c\u864e\u4e4b\u529b\u731c\u628a\u773c\u6cea\u618b\u56de\u53bb\uff0c\u4e0d\u7136\u8fd8\u771f\u6015\u5413\u7740\u51fa\u79df\u8f66\u5e08\u5085\u3002<\/p>\n
    \u5468\u4e94<\/p>\n
    \u65e9\u4e0a\u8d77\u5e8a\u8fd8\u548c\u5973\u670b\u53cb\u8c08\u8d77\u8fd9\u4e8b\uff0c\u8bf4\u6211\u6700\u8fd1\u9047\u5230\u4e86\u4e00\u4e2a\u5927\u96be\u9898\uff0c\u60f3\u60f3\u5df2\u7ecf\u597d\u591a\u5e74\u6ca1\u9047\u5230\u8fd9\u4e48\u96be\u641e\u7684\u95ee\u9898\u4e86\u3002\u4e0a\u4e00\u6b21\u9047\u5230\u8fd9\u79cd\u7ea7\u522b\u7684\u95ee\u9898\uff0c\u8fd8\u662f\u5927\u56db\u521a\u8fdb\u5b9e\u9a8c\u5ba4\u7684\u65f6\u5019\uff0c\u90a3\u65f6\u5019\u6709\u4e2a\u95ee\u9898\u82b1\u4e86\u4e00\u6574\u5468\u7684\u65f6\u95f4\u624d\u89e3\u51b3\u3002\u8981\u662f\u4eca\u5929\u6211\u8fd8\u89e3\u51b3\u4e0d\u4e86\u8fd9\u4e2a\u95ee\u9898\uff0c\u5c31\u7834\u8bb0\u5f55\u4e86\u3002<\/p>\n
    \u8bb0\u5f97\u5f53\u65f6\u662f\u9700\u8981\u5728\u5b9e\u9a8c\u5ba4\u642d\u5efa eucalyptus \u96c6\u7fa4\uff0c\u4e4b\u524d\u6bcf\u6b21\u642d\u5efa\u90fd\u5f88\u987a\u5229\uff0c\u4f46\u662f\u90a3\u6b21\u5374\u5947\u602a\uff0c\u600e\u4e48\u90fd\u642d\u5efa\u4e0d\u6210\u529f\uff0c\u7814\u7a76\u4e86\u4e00\u5468\u4e4b\u540e\uff0c\u624d\u53d1\u73b0\u662f\u56e0\u4e3a\u90a3\u53f0\u670d\u52a1\u5668\u7684 bios \u65f6\u95f4\u88ab\u8fd8\u539f\u4e86\uff0ceucalyptus \u5728\u5b89\u88c5\u8fc7\u7a0b\u4e2d\u53d1\u73b0\u5f53\u524d\u65f6\u95f4\u4e0d\u5728\u81ea\u5df1\u7684\u6709\u6548\u65f6\u95f4\u5185\uff08\u592a\u65e9\u4e86\uff09\uff0c\u56e0\u6b64\u4e00\u76f4\u5b89\u88c5\u5931\u8d25\u3002<\/p>\n
    \u8a00\u5f52\u6b63\u4f20\uff0cmount namespace \u4e3a\u4ec0\u4e48\u6709\u8fd9\u4e48\u5927\u7684\u5a01\u529b\u5462\uff1f\u5b83\u5230\u5e95\u5f71\u54cd\u4ec0\u4e48\u4e86\u5462\uff1f\u5b9e\u5728\u60f3\u4e0d\u901a\uff0c\u5c31\u53bb\u8bf7\u6559\u4e86\u4e0b\u5927\u795e\uff0c\u5927\u795e\u60f3\u4e86\u60f3\uff0c\u56de\u4e86\u6211\u53e5\uff0c\u8bd5\u8bd5 ldd\uff1f<\/p>\n
    ldd<\/p>\n
    ldd \u662f\u4ec0\u4e48\uff1f<\/p>\n
    \u5f53\u7136\u8fd9\u53e5\u8bdd\u6211\u6ca1\u53bb\u95ee\u5927\u795e\uff0c\u8f6c\u8eab\u81ea\u5df1\u67e5\u53bb\u4e86\u3002<\/p>\n
    ldd \u662f list, dynamic, dependencies \u7684\u7f29\u5199\uff0c\u610f\u601d\u662f\u5217\u51fa\u52a8\u6001\u5e93\u4f9d\u8d56\u5173\u7cfb\u3002\u987f\u65f6\u8c41\u7136\u5f00\u6717\uff0cmount namespace \u9694\u79bb\u51fa\u4e86\u81ea\u5df1\u7684\u6587\u4ef6\u7cfb\u7edf\uff0c\u6240\u4ee5\u5bb9\u5668\u5185\u5916\u53ef\u4ee5\u4f7f\u7528\u4e0d\u540c\u7684\u4f9d\u8d56\u5e93\uff0c\u800c\u4e0d\u540c\u7684\u4f9d\u8d56\u5e93\u5c31\u53ef\u80fd\u9020\u6210\u65e0\u6570\u79cd\u5f71\u54cd\u3002<\/p>\n
    \u4e8e\u662f\u5f00\u59cb\u901a\u8fc7 ldd \u5bf9\u6bd4\u5bb9\u5668\u4e2d\u4e1a\u52a1\u8fdb\u7a0b\u7684\u4f9d\u8d56\u5e93\u4e0e\u5bbf\u4e3b\u673a\u4e0a\u4e1a\u52a1\u8fdb\u7a0b\u7684\u4f9d\u8d56\u5e93\uff0c\u6700\u7ec8\u53d1\u73b0\u5bb9\u5668\u4e2d\u7684 glibc \u5e93\u4e0e\u5bbf\u4e3b\u673a\u4e0a\u7684 glibc \u5e93\u7248\u672c\u4e0d\u4e00\u81f4\uff0c\u5f88\u53ef\u80fd\u662f\u8fd9\u4e2a\u539f\u56e0\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u7684\u3002<\/p>\n
    \u4e8e\u662f\u5c06\u5bb9\u5668\u4e2d\u7684 glibc \u5e93\u7248\u672c\u66ff\u6362\u4e3a\u5bbf\u4e3b\u673a\u4e0a\u7684 glibc \u5e93\u4e4b\u540e\uff0c\u5bb9\u5668\u5185\u4e1a\u52a1\u7684\u6027\u80fd\u7ec8\u4e8e\u6062\u590d\u4e86\uff0c\u731c\u60f3\u5f97\u5230\u8bc1\u5b9e\u3002<\/p>\n
    \u4e0b\u73ed\u56de\u5bb6\uff0c\u4e00\u8eab\u8f7b\u677e\uff01<\/p>\n
    \u8def\u8fc7\u9694\u58c1\u5de5\u4f4d\u7684\u4e13\u5bb6\u65f6\u5019\uff0c\u4ed6\u521a\u597d\u8d77\u8eab\u63a5\u6c34\uff0c\u987a\u53e3\u95ee\u9053\uff0c\u201c\u600e\u4e48\u6837\uff0c\u5e73\u54e5\uff0c\u4e22\u5931\u7684\u90a3\u4e00\u5e27\u627e\u5230\u6ca1\uff1f\u201d\uff0c\u201c\u55e8\uff0c\u522b\u63d0\u4e86\uff0c\u7ee7\u7eed\u770b\u201d<\/p>\n
    \u540e\u8bb0<\/p>\n
    \u4e3a\u4ec0\u4e48\u5bb9\u5668\u5185\u5916 glibc \u7248\u672c\u4e0d\u4e00\u81f4\u5c31\u5bfc\u81f4\u6027\u80fd\u4e0b\u964d\u4e86\u5462\uff1f<\/p>\n
    \u8fd9\u662f\u548c\u4e1a\u52a1\u6a21\u578b\u76f8\u5173\u7684\uff0c\u524d\u9762\u63d0\u5230\uff0c\u4e0b\u6e38\u7684\u4e1a\u52a1\u6a21\u578b\u662f\u901a\u8fc7\u4e0e\u4e3b\u673a\u5171\u4eab IPC namespace \u7684\u65b9\u5f0f\u6765\u4f7f\u7528\u5171\u4eab\u5185\u5b58\u4e0e\u5bbf\u4e3b\u673a\u4e0a\u7684 daemon \u8fdb\u7a0b\u8fdb\u884c\u901a\u4fe1\u3002\u800c glibc \u5728\u4e00\u6b21\u5347\u7ea7\u4e2d\uff0c\u66f4\u65b0\u4e86\u4fe1\u53f7\u91cf\u7684\u6570\u636e\u7ed3\u6784\uff08\u5982\u4e0b\uff09\uff0c\u5c31\u4f1a\u5bfc\u81f4\u5728\u5171\u4eab\u5185\u5b58\u901a\u4fe1\u65f6\uff0c\u7531\u4e8e\u6570\u636e\u683c\u5f0f\u4e0d\u4e00\u81f4\uff0c\u6bcf\u6b21\u4fe1\u53f7\u91cf\u901a\u4fe1\u90fd\u8d85\u65f6\uff0c\u4ece\u800c\u5f71\u54cd\u4e86\u7a0b\u5e8f\u8fd0\u884c\u6548\u7387\u3002<\/p>\n
    \"\"<\/p>\n
     <\/p>\n
    \u9605\u8bfb\u539f\u6587<\/a><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
    \u539f\u6587\u5730\u5740   \u00a0 \u00a0 \u80cc\u666f\u00a0 <\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[117],"class_list":["post-3571","post","type-post","status-publish","format-standard","hentry","tag-01-linux"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/3571","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=3571"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/3571\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=3571"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=3571"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=3571"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}