{"id":2255,"date":"2024-05-27T23:08:53","date_gmt":"2024-05-27T15:08:53","guid":{"rendered":"https:\/\/wp.vicds.com\/?p=2255"},"modified":"2024-10-28T11:03:08","modified_gmt":"2024-10-28T03:03:08","slug":"test-io-speed-with-dd-command-linux","status":"publish","type":"post","link":"https:\/\/wp.vicds.com\/?p=2255","title":{"rendered":"test io speed(HDD) with dd command @linux"},"content":{"rendered":"\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-\"># \u6e2c\u8a66\u5beb\u5165\u901f\u5ea6\n$ dd if=\/dev\/zero of=\/tmp\/test1.img bs=1M count=1024 conv=fdatasync oflag=dsync\n\n# \u6e2c\u8a66\u8b80\u53d6\u901f\u5ea6, \u5148\u522acache\n$ sudo sh -c &quot;\/usr\/bin\/echo 3 &gt; \/proc\/sys\/vm\/drop_caches&quot;\n$ dd if=\/tmp\/test1.img of=\/dev\/null bs=1M count=1024\n\n# \u4e0a\u9762\u505a\u5b8c\u5f8c\u4f86\u5be6\u9a57\u5982\u679c\u4e0d\u522acache\u7684\u7d50\u679c\n$ dd if=\/tmp\/test1.img of=\/dev\/null bs=1M count=1024\n\n# \u522a\u9664\u6e2c\u8a66\u6a94\n$ rm -v -i \/tmp\/test1.img<\/code><\/pre>\n\n\n\n<p>\u53e6\u5916\u7528\u5de5\u5177\u6e2c<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-\"># apt install hdparm\n\n# hdparm -Tt \/dev\/sda<\/code><\/pre>\n\n\n\n<p>\u53e6\u5916\u6709\u4e00\u5957iozone3\u53cafio\u91dd\u5c0d\u96a8\u6a5f\u8b80\u5beb\u6e2c\u8a66, \u6539\u5929\u518d\u4f86\u8a66.<\/p>\n\n\n\n<pre class=\"wp-block-prismatic-blocks\"><code class=\"language-\"># apt install fio<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u53e6\u5916\u7528\u5de5\u5177\u6e2c \u53e6\u5916\u6709\u4e00\u5957iozone3\u53cafi [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2255","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/wp.vicds.com\/index.php?rest_route=\/wp\/v2\/posts\/2255","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/wp.vicds.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/wp.vicds.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/wp.vicds.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/wp.vicds.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2255"}],"version-history":[{"count":6,"href":"https:\/\/wp.vicds.com\/index.php?rest_route=\/wp\/v2\/posts\/2255\/revisions"}],"predecessor-version":[{"id":2353,"href":"https:\/\/wp.vicds.com\/index.php?rest_route=\/wp\/v2\/posts\/2255\/revisions\/2353"}],"wp:attachment":[{"href":"https:\/\/wp.vicds.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2255"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/wp.vicds.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2255"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/wp.vicds.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2255"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}