{"categories":["Linux","performance"],"author_url":"https://blog.hatena.ne.jp/yohei-a/","published":"2013-10-06 16:56:53","type":"rich","image_url":null,"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fyohei-a.hatenablog.jp%2Fentry%2F20131006%2F1381046213\" title=\"blktrace \u3092\u4f7f\u3063\u3066\u307f\u308b - ablog\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://yohei-a.hatenablog.jp/entry/20131006/1381046213","width":"100%","author_name":"yohei-a","blog_title":"ablog","height":"190","blog_url":"https://yohei-a.hatenablog.jp/","provider_url":"https://hatena.blog","version":"1.0","title":"blktrace \u3092\u4f7f\u3063\u3066\u307f\u308b","provider_name":"Hatena Blog","description":"[root@yazekats-linux ~]# blktrace -d /dev/sda -o -|blkparse -i - Invalid debug path /sys/kernel/debug: 0/Success \u3068\u6012\u3089\u308c\u305f\u3002 [root@yazekats-linux ~]# mount -t debugfs debugfs /sys/kernel/debug \u3068\u3059\u308b\u3068\u3001\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u3002 [root@yazekats-linux ~]# blktrace -d /dev/sda -o -|blkparse -i - 8,0 2 1 0.000000000 0 C WS 7768\u2026"}