{"id":2331,"date":"2022-07-25T17:11:13","date_gmt":"2022-07-25T09:11:13","guid":{"rendered":"https:\/\/www.eumz.com\/?p=2331"},"modified":"2022-07-25T17:11:13","modified_gmt":"2022-07-25T09:11:13","slug":"iostat%e5%91%bd%e4%bb%a4%e4%bb%8b%e7%bb%8d","status":"publish","type":"post","link":"https:\/\/www.wxcn.com\/?p=2331","title":{"rendered":"iostat\u547d\u4ee4\u4ecb\u7ecd"},"content":{"rendered":"\n

\u5f15\u8a00\uff1a<\/p>\n\n\n\n

\u4e00\u3001\u6982\u8ff0<\/p>\n\n\n\n

\u4e8c\u3001iostat\u7528\u6cd5<\/p>\n\n\n\n

(1).\u7528\u6cd5\uff1aiostat [\u9009\u9879] [<\u65f6\u95f4\u95f4\u9694>] [<\u6b21\u6570>]<\/p>\n\n\n\n

(2). \u547d\u4ee4\u53c2\u6570\uff1a<\/p>\n\n\n\n

(3).\u793a\u4f8b\uff1a<\/p>\n\n\n\n

1.\u663e\u793a\u6240\u6709\u8bbe\u5907\u7684\u8d1f\u8f7d\u60c5\u51b5<\/p>\n\n\n\n

2.iostat -m  \u4ee5M\u4e3a\u5355\u4f4d\u663e\u793a\u6240\u6709\u4fe1\u606f<\/p>\n\n\n\n

3.iostat -d sda     \u663e\u793a\u6307\u5b9a\u786c\u76d8\u4fe1\u606f<\/p>\n\n\n\n

4.iostat -t   \u62a5\u544a\u6bcf\u79d2\u5411\u7ec8\u7aef\u8bfb\u53d6\u548c\u5199\u5165\u7684\u5b57\u7b26\u6570<\/p>\n\n\n\n

5.iostat -d -k 1 1    \u67e5\u770bTPS\u548c\u541e\u5410\u91cf\u4fe1\u606f<\/p>\n\n\n\n

6.iostat -d -x -k 1 1      \u67e5\u770b\u8bbe\u5907\u4f7f\u7528\u7387\uff08%util\uff09\u3001\u54cd\u5e94\u65f6\u95f4\uff08await\uff09<\/p>\n\n\n\n

7.iostat -c 1 2   \u67e5\u770bcpu\u72b6\u6001    \u95f4\u96941\u79d2\u663e\u793a\u4e00\u6b21\uff0c\u603b\u5171\u663e\u793a2\u6b21<\/p>\n\n\n\n

\u4e09\u3001\u603b\u7ed3<\/p>\n\n\n\n

\u5f15\u8a00\uff1a<\/p>\n\n\n\n

iostat\u4e3b\u8981\u7528\u4e8e\u76d1\u63a7\u7cfb\u7edf\u8bbe\u5907\u7684IO\u8d1f\u8f7d\u60c5\u51b5\uff0c\u6839\u636e\u8fd9\u4e2a\u53ef\u4ee5\u770b\u51fa\u5f53\u524d\u7cfb\u7edf\u7684\u5199\u5165\u91cf\u548c\u8bfb\u53d6\u91cf\uff0cCPU\u8d1f\u8f7d\u548c\u78c1\u76d8\u8d1f\u8f7d\u3002<\/p>\n\n\n\n

\u4e00\u3001\u6982\u8ff0<\/p>\n\n\n\n

iostat \u4e3b\u8981\u7528\u4e8e\u8f93\u51fa\u78c1\u76d8IO \u548c CPU\u7684\u7edf\u8ba1\u4fe1\u606f\u3002<\/p>\n\n\n\n

iostat\u5c5e\u4e8esysstat\u8f6f\u4ef6\u5305\u3002\u53ef\u4ee5\u7528yum install sysstat \u76f4\u63a5\u5b89\u88c5\u3002<\/p>\n\n\n\n

\u4e8c\u3001iostat\u7528\u6cd5<\/p>\n\n\n\n

(1).\u7528\u6cd5\uff1aiostat [\u9009\u9879] [<\u65f6\u95f4\u95f4\u9694>] [<\u6b21\u6570>]<\/p>\n\n\n\n

(2). \u547d\u4ee4\u53c2\u6570\uff1a<\/p>\n\n\n\n

-c\uff1a \u663e\u793aCPU\u4f7f\u7528\u60c5\u51b5<\/p>\n\n\n\n

-d\uff1a \u663e\u793a\u78c1\u76d8\u4f7f\u7528\u60c5\u51b5<\/p>\n\n\n\n

-N\uff1a \u663e\u793a\u78c1\u76d8\u9635\u5217(LVM) \u4fe1\u606f<\/p>\n\n\n\n

-n\uff1a \u663e\u793aNFS \u4f7f\u7528\u60c5\u51b5<\/p>\n\n\n\n

-k\uff1a \u4ee5 KB \u4e3a\u5355\u4f4d\u663e\u793a<\/p>\n\n\n\n

-m\uff1a \u4ee5 M \u4e3a\u5355\u4f4d\u663e\u793a<\/p>\n\n\n\n

-t\uff1a \u62a5\u544a\u6bcf\u79d2\u5411\u7ec8\u7aef\u8bfb\u53d6\u548c\u5199\u5165\u7684\u5b57\u7b26\u6570\u548cCPU\u7684\u4fe1\u606f<\/p>\n\n\n\n

-V\uff1a \u663e\u793a\u7248\u672c\u4fe1\u606f<\/p>\n\n\n\n

-x\uff1a \u663e\u793a\u8be6\u7ec6\u4fe1\u606f<\/p>\n\n\n\n

-p\uff1a [\u78c1\u76d8] \u663e\u793a\u78c1\u76d8\u548c\u5206\u533a\u7684\u60c5\u51b5<\/p>\n\n\n\n

(3).\u793a\u4f8b\uff1a<\/p>\n\n\n\n

1.\u663e\u793a\u6240\u6709\u8bbe\u5907\u7684\u8d1f\u8f7d\u60c5\u51b5<\/p>\n\n\n\n

cpu\u5c5e\u6027\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n

%user\uff1aCPU\u5904\u5728\u7528\u6237\u6a21\u5f0f\u4e0b\u7684\u65f6\u95f4\u767e\u5206\u6bd4\u3002<\/p>\n\n\n\n

%nice\uff1aCPU\u5904\u5728\u5e26NICE\u503c\u7684\u7528\u6237\u6a21\u5f0f\u4e0b\u7684\u65f6\u95f4\u767e\u5206\u6bd4\u3002<\/p>\n\n\n\n

%system\uff1aCPU\u5904\u5728\u7cfb\u7edf\u6a21\u5f0f\u4e0b\u7684\u65f6\u95f4\u767e\u5206\u6bd4\u3002<\/p>\n\n\n\n

%iowait\uff1aCPU\u7b49\u5f85\u8f93\u5165\u8f93\u51fa\u5b8c\u6210\u65f6\u95f4\u7684\u767e\u5206\u6bd4\u3002<\/p>\n\n\n\n

%steal\uff1a\u7ba1\u7406\u7a0b\u5e8f\u7ef4\u62a4\u53e6\u4e00\u4e2a\u865a\u62df\u5904\u7406\u5668\u65f6\uff0c\u865a\u62dfCPU\u7684\u65e0\u610f\u8bc6\u7b49\u5f85\u65f6\u95f4\u767e\u5206\u6bd4\u3002<\/p>\n\n\n\n

%idle\uff1aCPU\u7a7a\u95f2\u65f6\u95f4\u767e\u5206\u6bd4\u3002<\/p>\n\n\n\n

\u5907\u6ce8\uff1a<\/p>\n\n\n\n

\u5982\u679c%iowait\u7684\u503c\u8fc7\u9ad8\uff0c\u8868\u793a\u786c\u76d8\u5b58\u5728I\/O\u74f6\u9888\uff0c%idle\u503c\u9ad8\uff0c\u8868\u793aCPU\u8f83\u7a7a\u95f2\uff0c\u5982\u679c%idle\u503c\u9ad8\u4f46\u7cfb\u7edf\u54cd\u5e94\u6162\u65f6\uff0c\u6709\u53ef\u80fd\u662fCPU\u7b49\u5f85\u5206\u914d\u5185\u5b58\uff0c\u6b64\u65f6\u5e94\u52a0\u5927\u5185\u5b58\u5bb9\u91cf\u3002%idle\u503c\u5982\u679c\u6301\u7eed\u4f4e\u4e8e10\uff0c\u90a3\u4e48\u7cfb\u7edf\u7684CPU\u5904\u7406\u80fd\u529b\u76f8\u5bf9\u8f83\u4f4e\uff0c\u8868\u660e\u7cfb\u7edf\u4e2d\u6700\u9700\u8981\u89e3\u51b3\u7684\u8d44\u6e90\u662fCPU\u3002<\/p>\n\n\n\n

disk\u5c5e\u6027\u503c\u8bf4\u660e\uff1a<\/p>\n\n\n\n

\u78c1\u76d8\u540d\u79f0<\/p>\n\n\n\n

device:\u78c1\u76d8\u540d\u79f0<\/p>\n\n\n\n

tps:\u6bcf\u79d2\u949f\u53d1\u9001\u5230\u7684I\/O\u8bf7\u6c42\u6570.<\/p>\n\n\n\n

Blk_read\/s:\u6bcf\u79d2\u8bfb\u53d6\u7684block\u6570.<\/p>\n\n\n\n

Blk_wrtn\/s:\u6bcf\u79d2\u5199\u5165\u7684block\u6570.<\/p>\n\n\n\n

Blk_read:\u8bfb\u5165\u7684block\u603b\u6570.<\/p>\n\n\n\n

Blk_wrtn:\u5199\u5165\u7684block\u603b\u6570.<\/p>\n\n\n\n

2.iostat -m  \u4ee5M\u4e3a\u5355\u4f4d\u663e\u793a\u6240\u6709\u4fe1\u606f<\/p>\n\n\n\n

3.iostat -d sda     \u663e\u793a\u6307\u5b9a\u786c\u76d8\u4fe1\u606f<\/p>\n\n\n\n

4.iostat -t   \u62a5\u544a\u6bcf\u79d2\u5411\u7ec8\u7aef\u8bfb\u53d6\u548c\u5199\u5165\u7684\u5b57\u7b26\u6570<\/p>\n\n\n\n

5.iostat -d -k 1 1    \u67e5\u770bTPS\u548c\u541e\u5410\u91cf\u4fe1\u606f<\/p>\n\n\n\n

6.iostat -d -x -k 1 1      \u67e5\u770b\u8bbe\u5907\u4f7f\u7528\u7387\uff08%util\uff09\u3001\u54cd\u5e94\u65f6\u95f4\uff08await\uff09<\/p>\n\n\n\n

\u8bf4\u660e\uff1a<\/p>\n\n\n\n

tps:\u6bcf\u79d2\u949f\u53d1\u9001\u5230\u7684I\/O\u8bf7\u6c42\u6570\u3002<\/p>\n\n\n\n

Blk_read\/s:\u6bcf\u79d2\u8bfb\u53d6\u7684block\u6570\u3002<\/p>\n\n\n\n

Blk_wrtn\/s:\u6bcf\u79d2\u5199\u5165\u7684block\u6570\u3002<\/p>\n\n\n\n

Blk_read:\u8bfb\u5165\u7684block\u603b\u6570\u3002<\/p>\n\n\n\n

Blk_wrtn:\u5199\u5165\u7684block\u603b\u6570\u3002<\/p>\n\n\n\n

rrqm\/s: \u6bcf\u79d2\u8fdb\u884c merge \u7684\u8bfb\u64cd\u4f5c\u6570\u76ee\u3002\u5373 rmerge\/s<\/p>\n\n\n\n

wrqm\/s: \u6bcf\u79d2\u8fdb\u884c merge \u7684\u5199\u64cd\u4f5c\u6570\u76ee\u3002\u5373 wmerge\/s<\/p>\n\n\n\n

r\/s: \u6bcf\u79d2\u5b8c\u6210\u7684\u8bfb I\/O \u8bbe\u5907\u6b21\u6570\u3002\u5373 rio\/s<\/p>\n\n\n\n

w\/s: \u6bcf\u79d2\u5b8c\u6210\u7684\u5199 I\/O \u8bbe\u5907\u6b21\u6570\u3002\u5373 wio\/s<\/p>\n\n\n\n

rkB\/s: \u6bcf\u79d2\u8bfbK\u5b57\u8282\u6570\u3002\u662f rsect\/s \u7684\u4e00\u534a\uff0c\u56e0\u4e3a\u6bcf\u6247\u533a\u5927\u5c0f\u4e3a512\u5b57\u8282\u3002<\/p>\n\n\n\n

wkB\/s: \u6bcf\u79d2\u5199K\u5b57\u8282\u6570\u3002\u662f wsect\/s \u7684\u4e00\u534a\u3002<\/p>\n\n\n\n

avgrq-sz: \u5e73\u5747\u6bcf\u6b21\u8bbe\u5907I\/O\u64cd\u4f5c\u7684\u6570\u636e\u5927\u5c0f (\u6247\u533a)\u3002<\/p>\n\n\n\n

avgqu-sz: \u5e73\u5747I\/O\u961f\u5217\u957f\u5ea6\u3002<\/p>\n\n\n\n

rsec\/s: \u6bcf\u79d2\u8bfb\u6247\u533a\u6570\u3002\u5373 rsect\/s<\/p>\n\n\n\n

wsec\/s: \u6bcf\u79d2\u5199\u6247\u533a\u6570\u3002\u5373 wsect\/s<\/p>\n\n\n\n

r_await:\u6bcf\u4e2a\u8bfb\u64cd\u4f5c\u5e73\u5747\u6240\u9700\u7684\u65f6\u95f4<\/p>\n\n\n\n

\u4e0d\u4ec5\u5305\u62ec\u786c\u76d8\u8bbe\u5907\u8bfb\u64cd\u4f5c\u7684\u65f6\u95f4\uff0c\u8fd8\u5305\u62ec\u4e86\u5728kernel\u961f\u5217\u4e2d\u7b49\u5f85\u7684\u65f6\u95f4\u3002<\/p>\n\n\n\n

w_await:\u6bcf\u4e2a\u5199\u64cd\u4f5c\u5e73\u5747\u6240\u9700\u7684\u65f6\u95f4<\/p>\n\n\n\n

\u4e0d\u4ec5\u5305\u62ec\u786c\u76d8\u8bbe\u5907\u5199\u64cd\u4f5c\u7684\u65f6\u95f4\uff0c\u8fd8\u5305\u62ec\u4e86\u5728kernel\u961f\u5217\u4e2d\u7b49\u5f85\u7684\u65f6\u95f4\u3002<\/p>\n\n\n\n

await: \u5e73\u5747\u6bcf\u6b21\u8bbe\u5907I\/O\u64cd\u4f5c\u7684\u7b49\u5f85\u65f6\u95f4 (\u6beb\u79d2)\u3002<\/p>\n\n\n\n

svctm: \u5e73\u5747\u6bcf\u6b21\u8bbe\u5907I\/O\u64cd\u4f5c\u7684\u670d\u52a1\u65f6\u95f4 (\u6beb\u79d2)\u3002<\/p>\n\n\n\n

%util: \u4e00\u79d2\u4e2d\u6709\u767e\u5206\u4e4b\u591a\u5c11\u7684\u65f6\u95f4\u7528\u4e8e I\/O \u64cd\u4f5c\uff0c\u5373\u88abio\u6d88\u8017\u7684cpu\u767e\u5206\u6bd4<\/p>\n\n\n\n

\u5907\u6ce8\uff1a<\/p>\n\n\n\n

\u5982\u679c %util \u63a5\u8fd1 100%\uff0c\u8bf4\u660e\u4ea7\u751f\u7684I\/O\u8bf7\u6c42\u592a\u591a\uff0c<\/p>\n\n\n\n

I\/O\u7cfb\u7edf\u5df2\u7ecf\u6ee1\u8d1f\u8377\uff0c\u8be5\u78c1\u76d8\u53ef\u80fd\u5b58\u5728\u74f6\u9888\u3002\u5982\u679c svctm<\/p>\n\n\n\n

\u6bd4\u8f83\u63a5\u8fd1 await\uff0c\u8bf4\u660e I\/O \u51e0\u4e4e\u6ca1\u6709\u7b49\u5f85\u65f6\u95f4\uff1b\u5982\u679c await<\/p>\n\n\n\n

\u8fdc\u5927\u4e8e svctm\uff0c\u8bf4\u660eI\/O \u961f\u5217\u592a\u957f\uff0cio\u54cd\u5e94\u592a\u6162\uff0c\u5219\u9700\u8981\u8fdb\u884c\u5fc5\u8981\u4f18\u5316\u3002<\/p>\n\n\n\n

\u5982\u679cavgqu-sz\u6bd4\u8f83\u5927\uff0c\u4e5f\u8868\u793a\u6709\u5f53\u91cfio\u5728\u7b49\u5f85\u3002<\/p>\n\n\n\n

7.iostat -c 1 2   \u67e5\u770bcpu\u72b6\u6001    \u95f4\u96941\u79d2\u663e\u793a\u4e00\u6b21\uff0c\u603b\u5171\u663e\u793a2\u6b21<\/p>\n\n\n\n

iostat 1 5<\/p>\n\n\n\n

\u95f4\u96941\u79d2\uff0c\u603b\u5171\u663e\u793a5\u6b21<\/p>\n\n\n\n

iostat -d 2<\/p>\n\n\n\n

\u6bcf\u96942\u79d2,\u663e\u793a\u4e00\u6b21\u8bbe\u5907\u7edf\u8ba1\u4fe1\u606f.<\/p>\n\n\n\n

iostat -d 2 3<\/p>\n\n\n\n

\u6bcf\u96942\u79d2,\u663e\u793a\u4e00\u6b21\u8bbe\u5907\u7edf\u8ba1\u4fe1\u606f.\u603b\u5171\u8f93\u51fa3\u6b21.<\/p>\n\n\n\n

iostat -x sda sdb 2 3<\/p>\n\n\n\n

\u6bcf\u96942\u79d2\u663e\u793a\u4e00\u6b21sda, sdb\u4e24\u4e2a\u8bbe\u5907\u7684\u6269\u5c55\u7edf\u8ba1\u4fe1\u606f,\u5171\u8f93\u51fa3\u6b21.<\/p>\n\n\n\n

iostat -p sda 2 3<\/p>\n\n\n\n

\u6bcf\u96942\u79d2\u663e\u793a\u4e00\u6b21sda\u53ca\u4e0a\u9762\u6240\u6709\u5206\u533a\u7684\u7edf\u8ba1\u4fe1\u606f,\u5171\u8f93\u51fa3\u6b21.<\/p>\n\n\n\n

 \u4e09\u3001\u603b\u7ed3<\/p>\n\n\n\n

iostat\u662fLinux\u4e2d\u88ab\u7528\u6765\u76d1\u63a7\u7cfb\u7edf\u7684I\/O\u8bbe\u5907\u6d3b\u52a8\u60c5\u51b5\u7684\u5de5\u5177\uff0c\u662finput\/output statistics\u7684\u7f29\u5199\u3002\u5b83\u53ef\u4ee5\u751f\u6210\u4e09\u79cd\u7c7b\u578b\u7684\u62a5\u544a\uff1a<\/p>\n\n\n\n

CPU\u5229\u7528\u7387\u62a5\u544a<\/p>\n\n\n\n

\u8bbe\u5907\u5229\u7528\u7387\u62a5\u544a<\/p>\n\n\n\n

\u7f51\u7edc\u6587\u4ef6\u7cfb\u7edf\u62a5\u544a<\/p>\n\n\n\n

iostat\u901a\u8fc7\u751f\u6210\u7684\u62a5\u544a\u6765\u5e2e\u52a9\u7ba1\u7406\u5458\u66f4\u597d\u7684\u8c03\u6574\u7cfb\u7edf\u8bbe\u7f6e\u6765\u5e73\u8861\u5404\u4e2a\u7269\u7406\u78c1\u76d8\u4e4b\u95f4\u7684I\/O\u8d1f\u8f7d\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5f15\u8a00\uff1a \u4e00\u3001\u6982\u8ff0 \u4e8c\u3001iostat\u7528\u6cd5 (1).\u7528\u6cd5\uff1aiostat [\u9009\u9879] [<\u65f6\u95f4\u95f4\u9694>] [ […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[169,172,183],"class_list":["post-2331","post","type-post","status-publish","format-standard","hentry","category-operating-system","tag-io","tag-iostat","tag-linux-2"],"_links":{"self":[{"href":"https:\/\/www.wxcn.com\/index.php?rest_route=\/wp\/v2\/posts\/2331","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wxcn.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wxcn.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wxcn.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wxcn.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2331"}],"version-history":[{"count":0,"href":"https:\/\/www.wxcn.com\/index.php?rest_route=\/wp\/v2\/posts\/2331\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wxcn.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2331"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wxcn.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2331"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wxcn.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2331"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}