{"id":16594,"date":"2024-11-18T08:42:18","date_gmt":"2024-11-18T00:42:18","guid":{"rendered":"https:\/\/fwq.ai\/blog\/16594\/"},"modified":"2024-11-18T08:42:18","modified_gmt":"2024-11-18T00:42:18","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8linux%e8%bf%9b%e8%a1%8c%e7%a3%81%e7%9b%98io%e6%80%a7%e8%83%bd%e8%b0%83%e4%bc%98","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/16594\/","title":{"rendered":"\u5982\u4f55\u4f7f\u7528Linux\u8fdb\u884c\u78c1\u76d8IO\u6027\u80fd\u8c03\u4f18"},"content":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u78c1\u76d8io\u6027\u80fd\u8c03\u4f18<\/p>\n<p>\u5728\u4f7f\u7528Linux\u7cfb\u7edf\u8fdb\u884c\u78c1\u76d8IO\u6027\u80fd\u8c03\u4f18\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u6587\u4ef6\u7cfb\u7edf\u3001\u8c03\u6574IO\u8c03\u5ea6\u5668\u3001\u5408\u7406\u914d\u7f6eRAID\u7b49\u65b9\u5f0f\u6765\u63d0\u5347\u78c1\u76d8\u7684IO\u6027\u80fd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002<\/p>\n<p>\u4e00\u3001\u4f18\u5316\u6587\u4ef6\u7cfb\u7edf<\/p>\n<ol>\n<li>\u4f7f\u7528ext4\u6587\u4ef6\u7cfb\u7edf<\/li>\n<\/ol>\n<p>ext4\u662fLinux\u7cfb\u7edf\u4e0a\u6700\u5e38\u7528\u7684\u6587\u4ef6\u7cfb\u7edf\u4e4b\u4e00\uff0c\u5b83\u5177\u6709\u8f83\u9ad8\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u53ef\u4ee5\u901a\u8fc7\u5c06\u6587\u4ef6\u7cfb\u7edf\u683c\u5f0f\u5316\u4e3aext4\u6765\u63d0\u5347\u78c1\u76d8\u7684IO\u6027\u80fd\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># umount \/dev\/sdb1\n# mkfs.ext4 \/dev\/sdb1\n# mount -t ext4 \/dev\/sdb1 \/mnt<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u542f\u7528ext4\u65e5\u5fd7\u5199\u5165\u65b9\u5f0f<\/li>\n<\/ol>\n<p>ext4\u652f\u6301\u4e24\u79cd\u65e5\u5fd7\u5199\u5165\u65b9\u5f0f\uff1adata=ordered\u548cdata=writeback\u3002\u5176\u4e2d\uff0cdata=writeback\u6a21\u5f0f\u4e0b\uff0c\u6570\u636e\u5199\u5165\u5ef6\u8fdf\u8f83\u4f4e\uff0c\u6027\u80fd\u66f4\u9ad8\u3002\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u65b9\u6cd5\u4fee\u6539\uff1a<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># tune2fs -o journal_data_writeback \/dev\/sdb1<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e8c\u3001\u8c03\u6574IO\u8c03\u5ea6\u5668<\/p>\n<p>Linux\u7cfb\u7edf\u9ed8\u8ba4\u7684IO\u8c03\u5ea6\u5668\u662fCFQ\uff08Completely Fair Queuing\uff09\uff0c\u5b83\u8bd5\u56fe\u6309\u7167\u8fdb\u7a0b\u7684IO\u8bf7\u6c42\u987a\u5e8f\u5b9e\u73b0\u516c\u5e73\u5206\u914d\u3002\u4f46\u5728\u4e00\u4e9b\u9ad8\u8d1f\u8f7d\u573a\u666f\u4e0b\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u78c1\u76d8IO\u6027\u80fd\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528\u66f4\u9002\u5408\u7684IO\u8c03\u5ea6\u5668\uff0c\u5982noop\u3001deadline\u548ccfq\u3002<\/p>\n<ol>\n<li>\u4f7f\u7528noop\u8c03\u5ea6\u5668<\/li>\n<\/ol>\n<p>noop\u8c03\u5ea6\u5668\u6ca1\u6709\u4efb\u4f55\u8c03\u5ea6\u7b97\u6cd5\uff0c\u53ea\u662f\u6309\u7167\u8bf7\u6c42\u7684\u987a\u5e8f\u8fdb\u884c\u5904\u7406\u3002\u9002\u5408\u9ad8\u6027\u80fd\u7684SSD\u78c1\u76d8\u6216\u8005RAID\u5361\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u4fee\u6539IO\u8c03\u5ea6\u5668\uff1a<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># echo noop &amp;gt; \/sys\/block\/sdb\/queue\/scheduler<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4f7f\u7528deadline\u8c03\u5ea6\u5668<\/li>\n<\/ol>\n<p>deadline\u8c03\u5ea6\u5668\u5c06IO\u8bf7\u6c42\u5206\u4e3a\u4e24\u4e2a\u961f\u5217\uff1a\u8fdb\u7a0b\u63d0\u4ea4\u7684IO\u8bf7\u6c42\u961f\u5217\u548c\u5185\u6838\u53d1\u51fa\u7684IO\u5408\u5e76\u8bf7\u6c42\u961f\u5217\u3002\u9002\u5408RAID\u8bbe\u5907\u548c\u8f83\u4e3a\u666e\u901a\u7684\u786c\u76d8\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># echo deadline &amp;gt; \/sys\/block\/sdb\/queue\/scheduler<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u4f7f\u7528cfq\u8c03\u5ea6\u5668<\/li>\n<\/ol>\n<p>cfq\u8c03\u5ea6\u5668\u5728\u5404\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u5747\u8861\u5730\u5206\u914dIO\u8d44\u6e90\uff0c\u9002\u5408\u591a\u4efb\u52a1\u573a\u666f\u3002\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u4fee\u6539IO\u8c03\u5ea6\u5668\uff1a<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># echo cfq &amp;gt; \/sys\/block\/sdb\/queue\/scheduler<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4e09\u3001\u5408\u7406\u914d\u7f6eRAID<\/p>\n<p>\u5bf9\u4e8e\u9700\u8981\u8f83\u9ad8\u78c1\u76d8IO\u6027\u80fd\u7684\u5e94\u7528\u573a\u666f\uff0c\u53ef\u4ee5\u8003\u8651\u4f7f\u7528RAID\u6280\u672f\u3002RAID\u5c06\u591a\u5757\u786c\u76d8\u7ec4\u5408\u6210\u4e00\u4e2a\u903b\u8f91\u78c1\u76d8\uff0c\u901a\u8fc7\u6570\u636e\u5206\u5e03\u548c\u5197\u4f59\u6280\u672f\u63d0\u5347IO\u6027\u80fd\u548c\u53ef\u9760\u6027\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<ol>\n<li>\u521b\u5efaRAID\u8bbe\u5907<\/li>\n<\/ol>\n<pre># mdadm --create \/dev\/md0 --level=5 --raid-devices=3 \/dev\/sdb1 \/dev\/sdc1 \/dev\/sdd1<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u683c\u5f0f\u5316RAID\u8bbe\u5907<\/li>\n<\/ol>\n<pre># mkfs.ext4 \/dev\/md0<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<ol>\n<li>\u6302\u8f7dRAID\u8bbe\u5907<\/li>\n<\/ol>\n<pre># mount -t ext4 \/dev\/md0 \/mnt<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u56db\u3001\u76d1\u63a7\u78c1\u76d8IO\u6027\u80fd<\/p>\n<p>\u6700\u540e\uff0c\u4e86\u89e3\u78c1\u76d8IO\u7684\u6027\u80fd\u60c5\u51b5\u662f\u8fdb\u884c\u8c03\u4f18\u7684\u5173\u952e\u3002\u53ef\u4ee5\u4f7f\u7528\u5de5\u5177\u5982iostat\u3001sar\u7b49\u6765\u76d1\u63a7\u78c1\u76d8IO\u7684\u8bfb\u5199\u6027\u80fd\u7b49\u6307\u6807\u3002<\/p>\n<p>\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre># iostat -x 1<\/pre>\n<p>  \u767b\u5f55\u540e\u590d\u5236   <\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u78c1\u76d8io\u6027\u80fd\u8c03\u4f18\u7684\u65b9\u6cd5\uff0c\u901a\u8fc7\u4f18\u5316\u6587\u4ef6\u7cfb\u7edf\u3001\u8c03\u6574IO\u8c03\u5ea6\u5668\u548c\u5408\u7406\u914d\u7f6eRAID\u7b49\u65b9\u5f0f\uff0c\u53ef\u4ee5\u63d0\u5347\u78c1\u76d8\u7684IO\u6027\u80fd\u3002\u540c\u65f6\uff0c\u76d1\u63a7\u78c1\u76d8IO\u6027\u80fd\u60c5\u51b5\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u8bc4\u4f30\u8c03\u4f18\u6548\u679c\u3002\u5e0c\u671b\u672c\u6587\u7684\u5185\u5bb9\u5bf9\u60a8\u6709\u6240\u5e2e\u52a9\u3002<\/p>\n<p>\u4ee5\u4e0a\u5c31\u662f\u5982\u4f55\u4f7f\u7528Linux\u8fdb\u884c\u78c1\u76d8IO\u6027\u80fd\u8c03\u4f18\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5982\u4f55\u4f7f\u7528linux\u8fdb\u884c\u78c1\u76d8io\u6027\u80fd\u8c03\u4f18 \u5728\u4f7f\u7528Linux\u7cfb\u7edf\u8fdb\u884c\u78c1\u76d8IO\u6027\u80fd\u8c03\u4f18\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u4f18\u5316\u6587\u4ef6\u7cfb\u7edf\u3001\u8c03\u6574IO\u8c03\u5ea6\u5668\u3001\u5408\u7406\u914d\u7f6eRAID\u7b49\u65b9\u5f0f\u6765\u63d0\u5347\u78c1\u76d8\u7684IO\u6027\u80fd\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u76f8\u5e94\u7684\u4ee3\u7801\u793a\u4f8b\u3002 \u4e00\u3001\u4f18\u5316\u6587\u4ef6\u7cfb\u7edf \u4f7f\u7528ext4\u6587\u4ef6\u7cfb\u7edf ext4\u662fLinux\u7cfb\u7edf\u4e0a\u6700\u5e38\u7528\u7684\u6587\u4ef6\u7cfb\u7edf\u4e4b\u4e00\uff0c\u5b83\u5177\u6709\u8f83\u9ad8\u7684\u6027\u80fd\u548c\u7a33\u5b9a\u6027\u3002\u53ef\u4ee5\u901a\u8fc7\u5c06\u6587\u4ef6\u7cfb\u7edf\u683c\u5f0f\u5316\u4e3aext4\u6765\u63d0\u5347\u78c1\u76d8\u7684IO\u6027\u80fd\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a # umount \/dev\/sdb1 # mkfs.ext4 \/dev\/sdb1 # mount -t ext4 \/dev\/sdb1 \/mnt \u767b\u5f55\u540e\u590d\u5236 \u542f\u7528ext4\u65e5\u5fd7\u5199\u5165\u65b9\u5f0f ext4\u652f\u6301\u4e24\u79cd\u65e5\u5fd7\u5199\u5165\u65b9\u5f0f\uff1adata=ordered\u548cdata=writeback\u3002\u5176\u4e2d\uff0cdata=writeback\u6a21\u5f0f\u4e0b\uff0c\u6570\u636e\u5199\u5165\u5ef6\u8fdf\u8f83\u4f4e\uff0c\u6027\u80fd\u66f4\u9ad8\u3002\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u65b9\u6cd5\u4fee\u6539\uff1a \u793a\u4f8b\u4ee3\u7801\uff1a # tune2fs -o journal_data_writeback \/dev\/sdb1 \u767b\u5f55\u540e\u590d\u5236 \u4e8c\u3001\u8c03\u6574IO\u8c03\u5ea6\u5668 Linux\u7cfb\u7edf\u9ed8\u8ba4\u7684IO\u8c03\u5ea6\u5668\u662fCFQ\uff08Completely Fair Queuing\uff09\uff0c\u5b83\u8bd5\u56fe\u6309\u7167\u8fdb\u7a0b\u7684IO\u8bf7\u6c42\u987a\u5e8f\u5b9e\u73b0\u516c\u5e73\u5206\u914d\u3002\u4f46\u5728\u4e00\u4e9b\u9ad8\u8d1f\u8f7d\u573a\u666f\u4e0b\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u78c1\u76d8IO\u6027\u80fd\u4e0b\u964d\u3002\u56e0\u6b64\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528\u66f4\u9002\u5408\u7684IO\u8c03\u5ea6\u5668\uff0c\u5982noop\u3001deadline\u548ccfq\u3002 \u4f7f\u7528noop\u8c03\u5ea6\u5668 noop\u8c03\u5ea6\u5668\u6ca1\u6709\u4efb\u4f55\u8c03\u5ea6\u7b97\u6cd5\uff0c\u53ea\u662f\u6309\u7167\u8bf7\u6c42\u7684\u987a\u5e8f\u8fdb\u884c\u5904\u7406\u3002\u9002\u5408\u9ad8\u6027\u80fd\u7684SSD\u78c1\u76d8\u6216\u8005RAID\u5361\uff0c\u53ef\u4ee5\u901a\u8fc7\u5982\u4e0b\u547d\u4ee4\u4fee\u6539IO\u8c03\u5ea6\u5668\uff1a \u793a\u4f8b\u4ee3\u7801\uff1a # echo noop &amp;gt; \/sys\/block\/sdb\/queue\/scheduler \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528deadline\u8c03\u5ea6\u5668 deadline\u8c03\u5ea6\u5668\u5c06IO\u8bf7\u6c42\u5206\u4e3a\u4e24\u4e2a\u961f\u5217\uff1a\u8fdb\u7a0b\u63d0\u4ea4\u7684IO\u8bf7\u6c42\u961f\u5217\u548c\u5185\u6838\u53d1\u51fa\u7684IO\u5408\u5e76\u8bf7\u6c42\u961f\u5217\u3002\u9002\u5408RAID\u8bbe\u5907\u548c\u8f83\u4e3a\u666e\u901a\u7684\u786c\u76d8\u3002 \u793a\u4f8b\u4ee3\u7801\uff1a # echo deadline &amp;gt; \/sys\/block\/sdb\/queue\/scheduler \u767b\u5f55\u540e\u590d\u5236 \u4f7f\u7528cfq\u8c03\u5ea6\u5668 cfq\u8c03\u5ea6\u5668\u5728\u5404\u4e2a\u8fdb\u7a0b\u4e4b\u95f4\u5747\u8861\u5730\u5206\u914dIO\u8d44\u6e90\uff0c\u9002\u5408\u591a\u4efb\u52a1\u573a\u666f\u3002\u53ef\u4ee5\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u4fee\u6539IO\u8c03\u5ea6\u5668\uff1a \u793a\u4f8b\u4ee3\u7801\uff1a # echo [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[],"class_list":["post-16594","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16594","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=16594"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/16594\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=16594"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=16594"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=16594"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}