{"author_name":"NIES","width":"100%","version":"1.0","author_url":"https://blog.hatena.ne.jp/NIES/","blog_url":"https://nies.hatenadiary.org/","blog_title":"NIES - \u767d\u7dda\u30aa\u30fc\u30eb","url":"https://nies.hatenadiary.org/entry/20110720/p3","provider_url":"https://hatena.blog","type":"rich","provider_name":"Hatena Blog","image_url":"https://cdn-ak.f.st-hatena.com/images/fotolife/N/NIES/20110720/20110720195829.png","published":"2011-07-20 00:00:02","categories":[],"description":"write\u6e2c\u5b9a\u65b9\u6cd5: dd if=/dev/zero of=file bs=1M count=4k conv=fdatasync read\u6e2c\u5b9a\u65b9\u6cd5: echo 1 > /proc/sys/vm/drop_caches\u5f8c\u306b dd if=file of=/dev/null bs=1M count=4k\u5404\u30b5\u30fc\u30d01\u3064\u305a\u3064brick\u3092volume\u306b\u767b\u9332\uff0e8 bricks\u30671 volume\u3092\u69cb\u6210\uff0e ext3 \u6bd4\u8f03\u7528ext3\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0 dist_remote distributed volumes \u30ea\u30e2\u30fc\u30c8brick\u3078\u306e\u30d5\u30a1\u30a4\u30ebI/O dist_local distributed volumes \u30ed\u30fc\u2026","title":" I/O throuput (dd)","height":"190","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fnies.hatenadiary.org%2Fentry%2F20110720%2Fp3\" title=\" I/O throuput (dd) - NIES - \u767d\u7dda\u30aa\u30fc\u30eb\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>"}