{"id":39953,"date":"2025-05-26T19:31:11","date_gmt":"2025-05-26T11:31:11","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/39953.html"},"modified":"2025-05-26T19:31:11","modified_gmt":"2025-05-26T11:31:11","slug":"%e6%9c%8d%e5%8a%a1%e5%99%a8%e5%8d%a1%e9%a1%bf%e5%85%83%e5%87%b6%e5%a4%a7%e6%8f%ad%e7%a7%98%ef%bc%81linux-%e7%a3%81%e7%9b%98%e8%af%bb%e5%86%99%e6%8c%87%e6%a0%87%e6%98%af%e5%a6%82%e4%bd%95%e5%86%b3","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/39953.html","title":{"rendered":"\u670d\u52a1\u5668\u5361\u987f\u5143\u51f6\u5927\u63ed\u79d8\uff01Linux \u78c1\u76d8\u8bfb\u5199\u6307\u6807\u662f\u5982\u4f55\u51b3\u5b9a\u7cfb\u7edf\u751f\u6b7b\u7684\uff1f"},"content":{"rendered":"<p>\u5728\u6280\u672f\u8fd0\u7ef4\u4e0e\u7cfb\u7edf\u4f18\u5316\u7684\u9053\u8def\u4e0a&#xff0c;\u78c1\u76d8\u8bfb\u5199\u6027\u80fd\u662f\u7ed5\u4e0d\u5f00\u7684\u5173\u952e\u4e00\u73af\u3002\u6211\u66fe\u5728\u4e00\u6b21\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316\u9879\u76ee\u4e2d&#xff0c;\u5c31\u6df1\u523b\u4f53\u4f1a\u5230\u78c1\u76d8\u8bfb\u5199\u6307\u6807\u76d1\u6d4b\u4e0e\u5206\u6790\u7684\u91cd\u8981\u6027\u3002\u5f53\u65f6&#xff0c;\u4e1a\u52a1\u7cfb\u7edf\u9891\u7e41\u51fa\u73b0\u54cd\u5e94\u8fdf\u7f13\u7684\u60c5\u51b5&#xff0c;\u7528\u6237\u62b1\u6028\u4e0d\u65ad\u3002\u8d77\u521d\u4ee5\u4e3a\u662f\u7f51\u7edc\u6216 CPU \u95ee\u9898&#xff0c;\u6392\u67e5\u8bb8\u4e45\u5374\u6beb\u65e0\u5934\u7eea\u3002\u76f4\u5230\u6df1\u5165\u5206\u6790\u78c1\u76d8\u8bfb\u5199\u6307\u6807\u540e\u624d\u53d1\u73b0&#xff0c;\u78c1\u76d8\u5229\u7528\u7387\u957f\u671f\u9ad8\u8fbe 95%&#xff0c;\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\u8d85\u8fc7 50ms&#xff0c;\u539f\u6765\u662f\u78c1\u76d8\u6027\u80fd\u74f6\u9888\u62d6\u4e86\u540e\u817f\u3002\u901a\u8fc7\u66f4\u6362\u9ad8\u6027\u80fd SSD \u5e76\u4f18\u5316\u8bfb\u5199\u7b56\u7565&#xff0c;\u7cfb\u7edf\u6027\u80fd\u5f97\u5230\u4e86\u5927\u5e45\u63d0\u5347\u3002\u53ef\u89c1&#xff0c;\u638c\u63e1 Linux \u64cd\u4f5c\u7cfb\u7edf\u78c1\u76d8\u8bfb\u5199\u7684\u8bc4\u4ef7\u6307\u6807&#xff0c;\u5bf9\u4fdd\u969c\u7cfb\u7edf\u7a33\u5b9a\u9ad8\u6548\u8fd0\u884c\u81f3\u5173\u91cd\u8981\u3002\u4e0b\u9762&#xff0c;\u6211\u5c31\u6765\u548c\u5927\u5bb6\u5206\u4eab\u4e00\u4e0b\u8fd9\u4e9b\u91cd\u8981\u6307\u6807\u53ca\u5176\u67e5\u770b\u65b9\u6cd5\u3002<\/p>\n<p>\u4e00\u3001\u6982\u8ff0<\/p>\n<p>\u5728 Linux \u64cd\u4f5c\u7cfb\u7edf\u4e2d&#xff0c;\u78c1\u76d8\u8bfb\u5199\u6027\u80fd\u5bf9\u7cfb\u7edf\u6574\u4f53\u8fd0\u884c\u6548\u7387\u6709\u7740\u5173\u952e\u5f71\u54cd\u3002\u901a\u8fc7\u4e00\u7cfb\u5217\u8bc4\u4ef7\u6307\u6807&#xff0c;\u53ef\u5168\u9762\u8861\u91cf\u78c1\u76d8\u6027\u80fd&#xff0c;\u5b9a\u4f4d\u6027\u80fd\u74f6\u9888&#xff0c;\u4e3a\u7cfb\u7edf\u4f18\u5316\u548c\u786c\u4ef6\u5347\u7ea7\u63d0\u4f9b\u4f9d\u636e\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u9610\u8ff0 Linux \u78c1\u76d8\u8bfb\u5199\u7684\u4e3b\u8981\u8bc4\u4ef7\u6307\u6807\u53ca\u5176\u67e5\u770b\u65b9\u6cd5\u3002<\/p>\n<p>\u4e8c\u3001\u57fa\u7840\u6027\u80fd\u6307\u6807<\/p>\n<h4>2.1 \u541e\u5410\u91cf&#xff08;Throughput&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u5355\u4f4d\u65f6\u95f4\u5185\u78c1\u76d8\u5b8c\u6210\u7684\u8bfb\u5199\u6570\u636e\u91cf&#xff0c;\u901a\u5e38\u4ee5 MB\/s \u6216 GB\/s \u4e3a\u5355\u4f4d&#xff0c;\u53cd\u6620\u78c1\u76d8\u7684\u6574\u4f53\u6570\u636e\u4f20\u8f93\u80fd\u529b&#xff0c;\u53d7\u78c1\u76d8\u7c7b\u578b&#xff08;\u5982 HDD\/SSD&#xff09;\u3001\u63a5\u53e3&#xff08;SATA\/PCIe&#xff09;\u3001RAID \u914d\u7f6e\u7b49\u56e0\u7d20\u5f71\u54cd\u3002<\/p>\n<\/li>\n<li>\n<p>\u516c\u5f0f&#xff1a;\u541e\u5410\u91cf &#061; \u8bfb\u5199\u6570\u636e\u603b\u91cf \/ \u65f6\u95f4<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5<\/p>\n<ul>\n<li>\n<p>iostat&#xff1a;\u6267\u884ciostat -d -k 1&#xff0c;\u6bcf\u79d2\u5237\u65b0\u78c1\u76d8 I\/O \u4fe1\u606f\u3002kB_read\/s\u8868\u793a\u6bcf\u79d2\u4ece\u8bbe\u5907\u8bfb\u53d6\u7684\u6570\u636e\u91cf&#xff0c;kB_wrtn\/s\u8868\u793a\u6bcf\u79d2\u5411\u8bbe\u5907\u5199\u5165\u7684\u6570\u636e\u91cf&#xff0c;\u5c06\u5176\u9664\u4ee5 1024 \u53ef\u6362\u7b97\u6210 MB\/s \u5355\u4f4d\u3002<\/p>\n<\/li>\n<li>\n<p>vmstat&#xff1a;\u4f7f\u7528vmstat -d&#xff0c;\u53ef\u663e\u793a\u78c1\u76d8\u603b\u541e\u5410\u91cf\u76f8\u5173\u4fe1\u606f&#xff0c;\u4f46\u4fe1\u606f\u76f8\u5bf9\u7b80\u7565\u3002<\/p>\n<\/li>\n<li>\n<p>dstat&#xff1a;\u8fd0\u884cdstat -d&#xff0c;\u80fd\u5b9e\u65f6\u7edf\u8ba1\u5404\u78c1\u76d8\u7684\u8bfb\u5199\u901f\u7387&#xff0c;\u76f4\u89c2\u5c55\u793a\u541e\u5410\u91cf\u53d8\u5316\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>2.2 IOPS&#xff08;Input\/Output Operations Per Second&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u6bcf\u79d2\u5b8c\u6210\u7684 I\/O \u64cd\u4f5c\u6b21\u6570&#xff0c;\u5e38\u7528\u4e8e\u8861\u91cf\u968f\u673a\u8bfb\u5199\u6027\u80fd&#xff08;\u5982\u6570\u636e\u5e93\u573a\u666f&#xff09;\u3002HDD \u7684 IOPS \u901a\u5e38\u4e3a\u51e0\u5341\u5230\u6570\u767e&#xff0c;SSD \u7684 IOPS \u53ef\u8fbe\u6570\u5343\u5230\u6570\u5341\u4e07\u3002<\/p>\n<\/li>\n<li>\n<p>\u516c\u5f0f&#xff1a;IOPS &#061; \u8bfb\u5199\u64cd\u4f5c\u6b21\u6570 \/ \u65f6\u95f4<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5<\/p>\n<ul>\n<li>\n<p>iostat&#xff1a;\u901a\u8fc7iostat -d -x 1&#xff0c;r\/s\u8868\u793a\u6bcf\u79d2\u54cd\u5e94\u7684\u8bfb\u53d6\u8bf7\u6c42\u6570&#xff0c;w\/s\u8868\u793a\u6bcf\u79d2\u54cd\u5e94\u7684\u5199\u5165\u8bf7\u6c42\u6570&#xff0c;\u4e24\u8005\u76f8\u52a0\u53ef\u5f97\u5230\u5927\u81f4\u7684 IOPS \u503c\u3002<\/p>\n<\/li>\n<li>\n<p>fio&#xff1a;\u7f16\u5199\u914d\u7f6e\u6587\u4ef6\u5b9a\u4e49\u6d4b\u8bd5\u53c2\u6570&#xff08;\u5982rw&#061;randread\u8868\u793a\u968f\u673a\u8bfb&#xff0c;rw&#061;randwrite\u8868\u793a\u968f\u673a\u5199&#xff09;&#xff0c;\u8fd0\u884cfio\u6d4b\u8bd5&#xff0c;\u7ed3\u679c\u4e2d\u4f1a\u663e\u793a\u8be6\u7ec6\u7684 IOPS \u6307\u6807&#xff0c;\u9002\u7528\u4e8e\u7cbe\u786e\u6d4b\u8bd5\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u4e09\u3001\u65f6\u95f4\u76f8\u5173\u6307\u6807<\/p>\n<h4>3.1 \u5e73\u5747\u54cd\u5e94\u65f6\u95f4&#xff08;Average Response Time&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u5355\u4e2a I\/O \u64cd\u4f5c\u4ece\u53d1\u51fa\u8bf7\u6c42\u5230\u5b8c\u6210\u7684\u5e73\u5747\u8017\u65f6&#xff0c;\u5305\u62ec\u961f\u5217\u7b49\u5f85\u65f6\u95f4\u548c\u5b9e\u9645\u5904\u7406\u65f6\u95f4&#xff0c;\u5355\u4f4d\u4e3a\u6beb\u79d2&#xff08;ms&#xff09;\u3002\u7406\u60f3\u60c5\u51b5\u4e0b&#xff0c;\u968f\u673a\u8bfb\u5199\u573a\u666f\u4e2d&#xff0c;SSD \u54cd\u5e94\u65f6\u95f4\u901a\u5e38\u4f4e\u4e8e 1ms&#xff0c;HDD \u53ef\u80fd\u5728 5-10ms \u4ee5\u4e0a&#xff1b;\u987a\u5e8f\u8bfb\u5199\u573a\u666f\u54cd\u5e94\u65f6\u95f4\u66f4\u4f4e\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5&#xff1a;\u4f7f\u7528iostat -x 1&#xff0c;await\u8868\u793a\u5e73\u5747\u54cd\u5e94\u65f6\u95f4&#xff0c;\u5355\u4f4d\u662f\u6beb\u79d2\u3002\u4e00\u822c\u6765\u8bf4&#xff0c;\u7cfb\u7edf IO \u54cd\u5e94\u65f6\u95f4\u5e94\u4f4e\u4e8e 5ms&#xff0c;\u5927\u4e8e 10ms \u53ef\u80fd\u5b58\u5728\u6027\u80fd\u95ee\u9898\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>3.2 \u961f\u5217\u957f\u5ea6&#xff08;Queue Length&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u7b49\u5f85\u88ab\u78c1\u76d8\u5904\u7406\u7684 I\/O \u8bf7\u6c42\u6570\u91cf&#xff08;\u672a\u5b8c\u6210\u7684\u961f\u5217\u957f\u5ea6&#xff09;\u3002\u82e5\u961f\u5217\u957f\u5ea6\u6301\u7eed\u5927\u4e8e\u78c1\u76d8\u7684\u5e76\u53d1\u5904\u7406\u80fd\u529b&#xff08;\u5982 HDD \u901a\u5e38\u4e3a 1-2&#xff0c;SSD \u53ef\u8fbe\u6570\u5341&#xff09;&#xff0c;\u8868\u660e\u78c1\u76d8\u8d1f\u8f7d\u8fc7\u9ad8&#xff0c;\u53ef\u80fd\u5bfc\u81f4\u54cd\u5e94\u65f6\u95f4\u6025\u5267\u589e\u52a0\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5<\/p>\n<ul>\n<li>\n<p>cat \/proc\/diskstats&#xff1a;\u53ef\u67e5\u770b\u539f\u59cb\u78c1\u76d8\u7edf\u8ba1\u4fe1\u606f&#xff0c;\u7b2c 11 \u5217\u548c\u7b2c 14 \u5217\u5206\u522b\u662f\u8bfb\u961f\u5217\u957f\u5ea6\u548c\u5199\u961f\u5217\u957f\u5ea6\u7684\u77ac\u65f6\u503c&#xff0c;\u4f46\u77ac\u65f6\u503c\u53c2\u8003\u610f\u4e49\u6709\u9650\u3002<\/p>\n<\/li>\n<li>\n<p>dstat&#xff1a;\u4f7f\u7528dstat\u5de5\u5177\u7ed3\u5408\u76f8\u5173\u53c2\u6570&#xff0c;\u901a\u8fc7\u89c2\u5bdf\u78c1\u76d8 I\/O \u7b49\u5f85\u7684\u76f8\u5173\u6570\u636e\u95f4\u63a5\u53cd\u6620\u961f\u5217\u60c5\u51b5\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>3.3 \u670d\u52a1\u65f6\u95f4&#xff08;Service Time&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u78c1\u76d8\u5b9e\u9645\u5904\u7406\u5355\u4e2a I\/O \u8bf7\u6c42\u7684\u65f6\u95f4&#xff08;\u4e0d\u5305\u542b\u961f\u5217\u7b49\u5f85\u65f6\u95f4&#xff09;&#xff0c;\u5355\u4f4d\u4e3a\u6beb\u79d2&#xff08;ms&#xff09;\u3002HDD \u53d7\u8f6c\u901f\u3001\u5bfb\u9053\u65f6\u95f4\u3001\u78c1\u5934\u5b9a\u4f4d\u901f\u5ea6\u5f71\u54cd&#xff0c;SSD \u53d7\u95ea\u5b58\u82af\u7247\u901f\u5ea6\u3001\u63a7\u5236\u5668\u7b97\u6cd5\u5f71\u54cd\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5&#xff1a;\u4f7f\u7528iostat -x 1&#xff0c;svctm\u8868\u793a\u670d\u52a1\u65f6\u95f4&#xff0c;\u5355\u4f4d\u4e3a\u6beb\u79d2\u3002\u9700\u6ce8\u610f&#xff0c;svctm\u7684\u51c6\u786e\u6027\u53ef\u80fd\u53d7\u7cfb\u7edf\u8d1f\u8f7d\u548c\u5176\u4ed6\u56e0\u7d20\u5f71\u54cd\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u56db\u3001\u5229\u7528\u7387\u6307\u6807<\/p>\n<h4>4.1 \u78c1\u76d8\u5229\u7528\u7387&#xff08;Utilization&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u78c1\u76d8\u5904\u4e8e\u7e41\u5fd9\u72b6\u6001\u7684\u65f6\u95f4\u5360\u6bd4&#xff0c;\u53d6\u503c\u8303\u56f4 0%~100%\u3002\u6301\u7eed\u9ad8\u4e8e 70%~80% \u53ef\u80fd\u8868\u660e\u78c1\u76d8\u6027\u80fd\u74f6\u9888&#xff0c;\u5c24\u5176\u662f HDD&#xff1b;SSD \u56e0\u5e76\u884c\u5904\u7406\u80fd\u529b\u5f3a&#xff0c;\u77ed\u671f\u9ad8\u5229\u7528\u7387&#xff08;\u5982 90%&#xff09;\u53ef\u80fd\u4ecd\u8868\u73b0\u7a33\u5b9a\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5<\/p>\n<ul>\n<li>\n<p>iostat&#xff1a;\u6267\u884ciostat -d -x 1&#xff0c;%util\u8868\u793a\u78c1\u76d8\u7684\u5229\u7528\u7387&#xff0c;\u5b83\u662f\u5728\u7edf\u8ba1\u65f6\u95f4\u5185\u6240\u6709\u5904\u7406 IO \u65f6\u95f4\u9664\u4ee5\u603b\u5171\u7edf\u8ba1\u65f6\u95f4\u5f97\u5230\u7684\u767e\u5206\u6bd4\u3002<\/p>\n<\/li>\n<li>\n<p>vmstat&#xff1a;\u4f7f\u7528vmstat -d&#xff0c;\u5176\u4e2d\u6709\u4e00\u4e2a\u5b57\u6bb5\u4f1a\u663e\u793a\u78c1\u76d8\u6d3b\u52a8\u65f6\u95f4\u767e\u5206\u6bd4&#xff0c;\u53ef\u53cd\u6620\u78c1\u76d8\u5229\u7528\u7387\u60c5\u51b5\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>4.2 \u7b49\u5f85\u961f\u5217\u65f6\u95f4\u5360\u6bd4 <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;I\/O \u8bf7\u6c42\u5728\u961f\u5217\u4e2d\u7b49\u5f85\u7684\u65f6\u95f4\u5360\u603b\u54cd\u5e94\u65f6\u95f4\u7684\u6bd4\u4f8b\u3002\u82e5\u8be5\u6bd4\u4f8b\u8fc7\u9ad8&#xff08;\u5982\u8d85\u8fc7 50%&#xff09;&#xff0c;\u8bf4\u660e\u78c1\u76d8\u5904\u7406\u80fd\u529b\u4e0d\u8db3&#xff0c;\u9700\u4f18\u5316\u6216\u6269\u5bb9\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5&#xff1a;\u901a\u5e38\u6ca1\u6709\u76f4\u63a5\u5de5\u5177\u6216\u547d\u4ee4\u67e5\u770b&#xff0c;\u53ef\u901a\u8fc7iostat\u7684await&#xff08;\u5e73\u5747\u54cd\u5e94\u65f6\u95f4&#xff09;\u548csvctm&#xff08;\u670d\u52a1\u65f6\u95f4&#xff09;\u4f30\u7b97&#xff0c;\u7b49\u5f85\u961f\u5217\u65f6\u95f4\u5360\u6bd4 &#061; (await &#8211; svctm) \/await \u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4e94\u3001\u5176\u4ed6\u5173\u952e\u6307\u6807<\/p>\n<h4>5.1 \u8bfb\u5199\u8bf7\u6c42\u5206\u5e03 <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u5206\u4e3a\u987a\u5e8f\u8bfb\u5199&#xff08;\u8fde\u7eed\u5730\u5740\u7684 I\/O \u64cd\u4f5c&#xff0c;\u5982\u5927\u6587\u4ef6\u4f20\u8f93&#xff0c;\u541e\u5410\u91cf\u9ad8\u4f46 IOPS \u4f4e&#xff09;\u548c\u968f\u673a\u8bfb\u5199&#xff08;\u79bb\u6563\u5730\u5740\u7684 I\/O \u64cd\u4f5c&#xff0c;\u5982\u6570\u636e\u5e93\u4e8b\u52a1&#xff0c;\u541e\u5410\u91cf\u4f4e\u4f46 IOPS \u8981\u6c42\u9ad8&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5<\/p>\n<ul>\n<li>\n<p>iostat&#xff1a;\u901a\u8fc7iostat -d -x 1&#xff0c;\u89c2\u5bdfrrqm\/s&#xff08;\u6bcf\u79d2\u8bfb\u53d6\u8bf7\u6c42\u5408\u5e76\u6570&#xff09;\u548cwrqm\/s&#xff08;\u6bcf\u79d2\u5199\u5165\u8bf7\u6c42\u5408\u5e76\u6570&#xff09;&#xff0c;\u8f83\u9ad8\u7684rrqm\/s\u6216wrqm\/s\u53ef\u80fd\u8868\u660e\u5b58\u5728\u8f83\u591a\u987a\u5e8f\u8bfb\u5199\u8bf7\u6c42&#xff1b;\u7ed3\u5408r\/s\u548cw\/s\u7684\u5927\u5c0f\u5173\u7cfb&#xff0c;\u4e5f\u80fd\u8f85\u52a9\u5224\u65ad\u8bfb\u5199\u8bf7\u6c42\u5206\u5e03\u3002<\/p>\n<\/li>\n<li>\n<p>fio&#xff1a;\u4f7f\u7528fio\u914d\u7f6e\u4e0d\u540c\u8bfb\u5199\u6a21\u5f0f&#xff08;\u5982randread\u3001randwrite\u3001read\u3001write&#xff09;\u8fdb\u884c\u6d4b\u8bd5&#xff0c;\u89c2\u5bdf\u541e\u5410\u91cf\u3001IOPS \u7b49\u6307\u6807&#xff0c;\u5206\u6790\u78c1\u76d8\u5728\u4e0d\u540c\u8bfb\u5199\u8bf7\u6c42\u5206\u5e03\u4e0b\u7684\u6027\u80fd\u8868\u73b0\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>5.2 \u6bcf\u8bf7\u6c42\u6570\u636e\u91cf&#xff08;Transfer Size&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u6bcf\u6b21 I\/O \u64cd\u4f5c\u4f20\u8f93\u7684\u6570\u636e\u5757\u5927\u5c0f&#xff0c;\u5355\u4f4d\u4e3a KB \u6216 MB \u3002\u5927\u6587\u4ef6\u4f20\u8f93\u503e\u5411\u4e8e\u9ad8\u541e\u5410\u91cf\u3001\u4f4e IOPS&#xff1b;\u5c0f\u6587\u4ef6\u64cd\u4f5c\u503e\u5411\u4e8e\u4f4e\u541e\u5410\u91cf\u3001\u9ad8 IOPS\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5<\/p>\n<ul>\n<li>\n<p>iostat&#xff1a;\u4f7f\u7528iostat -d -x 1&#xff0c;rkB\/s\u9664\u4ee5r\/s\u53ef\u5f97\u5230\u5e73\u5747\u6bcf\u6b21\u8bfb\u53d6\u8bf7\u6c42\u7684\u6570\u636e\u91cf&#xff0c;wkB\/s\u9664\u4ee5w\/s\u53ef\u5f97\u5230\u5e73\u5747\u6bcf\u6b21\u5199\u5165\u8bf7\u6c42\u7684\u6570\u636e\u91cf\u3002<\/p>\n<\/li>\n<li>\n<p>fio&#xff1a;\u5728fio\u6d4b\u8bd5\u914d\u7f6e\u6587\u4ef6\u4e2d\u901a\u8fc7\u8bbe\u7f6ebs&#xff08;\u5757\u5927\u5c0f&#xff09;\u53c2\u6570\u6307\u5b9a\u6bcf\u8bf7\u6c42\u7684\u6570\u636e\u91cf&#xff0c;\u89c2\u5bdf\u4e0d\u540cbs\u8bbe\u7f6e\u4e0b\u7684\u6027\u80fd\u8868\u73b0\u3002<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h4>5.3 \u9519\u8bef\u7387&#xff08;Error Rate&#xff09; <\/h4>\n<ul>\n<li>\n<p>\u5b9a\u4e49&#xff1a;\u78c1\u76d8\u5728\u8bfb\u5199\u8fc7\u7a0b\u4e2d\u53d1\u751f\u9519\u8bef\u7684\u6982\u7387&#xff0c;\u901a\u8fc7smartctl\u5de5\u5177\u67e5\u770b\u78c1\u76d8 SMART \u72b6\u6001&#xff0c;\u82e5\u51fa\u73b0\u4ecb\u8d28\u9519\u8bef&#xff08;Media Error&#xff09;\u6216\u6821\u9a8c\u9519\u8bef&#xff08;CRC Error&#xff09;&#xff0c;\u53ef\u80fd\u9884\u793a\u78c1\u76d8\u786c\u4ef6\u6545\u969c&#xff0c;\u9700\u53ca\u65f6\u66f4\u6362\u3002<\/p>\n<\/li>\n<li>\n<p>\u67e5\u770b\u65b9\u6cd5&#xff1a;\u4f7f\u7528smartctl -a \/dev\/sda&#xff08;\u5c06\/dev\/sda\u66ff\u6362\u4e3a\u8981\u68c0\u67e5\u7684\u78c1\u76d8\u8bbe\u5907\u540d\u79f0&#xff09;&#xff0c;\u91cd\u70b9\u5173\u6ce8Reallocated_Sector_Ct&#xff08;\u5df2\u91cd\u65b0\u5206\u914d\u7684\u6247\u533a\u6570\u91cf&#xff09;\u3001Current_Pending_Sector&#xff08;\u76ee\u524d\u6b63\u5728\u7b49\u5f85\u91cd\u65b0\u5206\u914d\u7684\u6247\u533a\u6570\u91cf&#xff09;\u3001Raw_Read_Error_Rate&#xff08;\u4ece\u78c1\u76d8\u8bfb\u53d6\u6570\u636e\u65f6\u672a\u80fd\u7ea0\u6b63\u7684\u9519\u8bef\u6570&#xff09;\u7b49\u4e0e\u9519\u8bef\u8ba1\u6570\u76f8\u5173\u7684\u5b57\u6bb5\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u516d\u3001\u6027\u80fd\u4f18\u5316\u65b9\u5411<\/p>\n<h4>6.1 \u786c\u4ef6\u5c42\u9762 <\/h4>\n<ul>\n<li>\n<p>\u66ff\u6362\u4e3a SSD&#xff08;\u5c24\u5176\u9488\u5bf9\u968f\u673a\u8bfb\u5199\u573a\u666f&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u91c7\u7528 RAID 0\/10 \u63d0\u5347\u541e\u5410\u91cf\u6216\u53ef\u9760\u6027\u3002<\/p>\n<\/li>\n<li>\n<p>\u589e\u52a0\u78c1\u76d8\u6570\u91cf&#xff08;\u5206\u6563 I\/O \u8d1f\u8f7d&#xff09;\u3002<\/p>\n<\/li>\n<\/ul>\n<h4>6.2 \u8f6f\u4ef6\u5c42\u9762 <\/h4>\n<ul>\n<li>\n<p>\u8c03\u6574\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u7b56\u7565&#xff08;\u5982\u589e\u5927dirty_ratio&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f18\u5316\u5e94\u7528\u7a0b\u5e8f I\/O \u6a21\u5f0f&#xff08;\u51cf\u5c11\u5c0f\u6587\u4ef6\u968f\u673a\u8bfb\u5199&#xff09;\u3002<\/p>\n<\/li>\n<li>\n<p>\u4f7f\u7528 LVM \u6216\u78c1\u76d8\u5206\u533a\u7ba1\u7406\u5de5\u5177\u5e73\u8861\u8d1f\u8f7d\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4e03\u3001\u603b\u7ed3<\/p>\n<p>\u901a\u8fc7\u5408\u7406\u8fd0\u7528\u4e0a\u8ff0\u5404\u7c7b\u8bc4\u4ef7\u6307\u6807\u53ca\u5176\u5bf9\u5e94\u7684\u67e5\u770b\u65b9\u6cd5&#xff0c;\u80fd\u591f\u5168\u9762\u3001\u6df1\u5165\u5730\u5206\u6790 Linux \u7cfb\u7edf\u4e2d\u78c1\u76d8\u7684\u8bfb\u5199\u6027\u80fd&#xff0c;\u53ca\u65f6\u53d1\u73b0\u6027\u80fd\u74f6\u9888\u5e76\u91c7\u53d6\u9488\u5bf9\u6027\u7684\u4f18\u5316\u63aa\u65bd&#xff0c;\u4fdd\u969c\u7cfb\u7edf\u9ad8\u6548\u7a33\u5b9a\u8fd0\u884c\u3002\u5728\u5b9e\u9645\u5e94\u7528\u4e2d&#xff0c;\u5efa\u8bae\u6839\u636e\u5177\u4f53\u4e1a\u52a1\u573a\u666f&#xff0c;\u7efc\u5408\u591a\u4e2a\u6307\u6807\u8fdb\u884c\u5206\u6790&#xff0c;\u4ee5\u83b7\u53d6\u66f4\u51c6\u786e\u7684\u6027\u80fd\u8bc4\u4f30\u7ed3\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u6d4f\u89c8\u9605\u8bfb926\u6b21\uff0c\u70b9\u8d5e23\u6b21\uff0c\u6536\u85cf9\u6b21\u3002\u5728\u6280\u672f\u8fd0\u7ef4\u4e0e\u7cfb\u7edf\u4f18\u5316\u7684\u9053\u8def\u4e0a\uff0c\u78c1\u76d8\u8bfb\u5199\u6027\u80fd\u662f\u7ed5\u4e0d\u5f00\u7684\u5173\u952e\u4e00\u73af\u3002\u6211\u66fe\u5728\u4e00\u6b21\u670d\u52a1\u5668\u6027\u80fd\u4f18\u5316\u9879\u76ee\u4e2d\uff0c\u5c31\u6df1\u523b\u4f53\u4f1a\u5230\u78c1\u76d8\u8bfb\u5199\u6307\u6807\u76d1\u6d4b\u4e0e\u5206\u6790\u7684\u91cd\u8981\u6027\u3002\u5f53\u65f6\uff0c\u4e1a\u52a1\u7cfb\u7edf\u9891\u7e41\u51fa\u73b0\u54cd\u5e94\u8fdf\u7f13\u7684\u60c5\u51b5\uff0c\u7528\u6237\u62b1\u6028\u4e0d\u65ad\u3002\u8d77\u521d\u4ee5\u4e3a\u662f\u7f51\u7edc\u6216 CPU \u95ee\u9898\uff0c\u6392\u67e5\u8bb8\u4e45\u5374\u6beb\u65e0\u5934\u7eea\u3002\u76f4\u5230\u6df1\u5165\u5206\u6790\u78c1\u76d8\u8bfb\u5199\u6307\u6807\u540e\u624d\u53d1\u73b0\uff0c\u78c1\u76d8\u5229\u7528\u7387\u957f\u671f\u9ad8\u8fbe 95%\uff0c\u5e73\u5747\u54cd\u5e94\u65f6\u95f4\u8d85\u8fc7 50ms\uff0c\u539f\u6765\u662f\u78c1\u76d8\u6027\u80fd\u74f6\u9888\u62d6\u4e86\u540e\u817f\u3002\u901a\u8fc7\u66f4\u6362\u9ad8\u6027\u80fd SSD \u5e76\u4f18\u5316\u8bfb\u5199\u7b56\u7565\uff0c\u7cfb\u7edf\u6027\u80fd\u5f97\u5230\u4e86\u5927\u5e45\u63d0\u5347\u3002\u53ef\u89c1\uff0c\u638c\u63e1 Linux \u64cd\u4f5c\u7cfb\u7edf\u78c1\u76d8\u8bfb\u5199\u7684\u8bc4\u4ef7\u6307\u6807\uff0c\u5bf9\u4fdd\u969c\u7cfb\u7edf\u7a33\u5b9a\u9ad8\u6548\u8fd0\u884c\u81f3\u5173\u91cd\u8981\u3002\u4e0b\u9762_ssd\u5e73\u5747\u54cd\u5e94\u65f6\u95f4<\/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":[3643,58,3493,56,43,3642,44],"topic":[],"class_list":{"0":"post-39953","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-server","7":"tag-iostat","8":"tag-linux","10":"tag-56","11":"tag-43","12":"tag-io","13":"tag-44"},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u670d\u52a1\u5668\u5361\u987f\u5143\u51f6\u5927\u63ed\u79d8\uff01Linux 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