{"id":190,"date":"2010-03-25T02:23:57","date_gmt":"2010-03-24T17:23:57","guid":{"rendered":"http:\/\/blog.isnext.net\/issy\/?p=190"},"modified":"2010-09-13T17:26:50","modified_gmt":"2010-09-13T08:26:50","slug":"linux%e3%82%b5%e3%83%bc%e3%83%90%e3%83%81%e3%83%a5%e3%83%bc%e3%83%8b%e3%83%b3%e3%82%b0%e3%83%a1%e3%83%a2","status":"publish","type":"post","link":"https:\/\/blog.isnext.net\/issy\/archives\/190","title":{"rendered":"Linux\u30b5\u30fc\u30d0\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u30e1\u30e2"},"content":{"rendered":"<p><strong>Linux\u30b5\u30fc\u30d0\u306b\u304a\u3051\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u9ad8\u901f\u5316\u306e\u305f\u3081\u306e\u8a2d\u5b9a<\/strong><br \/>\nCentOS5\u3001Ubuntu\u3001Debian\u3067\u5b9f\u884c\u3057\u3066\u307f\u305f\u3082\u306e\u3002\u52b9\u679c\u3042\u3063\u305f\u6c17\u304c\u3059\u308b\u3002<\/p>\n<p><strong>\u25a0\u30c7\u30a3\u30b9\u30af\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0<\/strong><br \/>\n\u53c2\u8003URL<br \/>\nhttp:\/\/www.itmedia.co.jp\/enterprise\/articles\/0707\/19\/news012.html<br \/>\nhttp:\/\/www.avant-tokyo.com\/linux\/hdparm.html<\/p>\n<p>hda\u8868\u793a\uff1dIDE<br \/>\nsda\u8868\u793a\uff1dSCSIorSATA<\/p>\n<p>sda\u306e\u5834\u5408\u306b\u306f\u4ee5\u4e0b\u306e\u3044\u304f\u3064\u304b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u7121\u52b9<\/p>\n<p># hdparm -Tt \/dev\/hda\u3000\u8aad\u307f\u51fa\u3057\u30c6\u30b9\u30c8<br \/>\n# hdparm -v \/dev\/hda\u3000\u30d1\u30e9\u30e1\u30fc\u30bf\u78ba\u8a8d<br \/>\n# hdparm -c3 \/dev\/hda\u300032bit\u30e2\u30fc\u30c9\u51e6\u7406<br \/>\n# hdparm -u1 \/dev\/hda\u3000\u5272\u308a\u8fbc\u307f\u51e6\u7406\u5bfe\u5fdc<br \/>\n# hdparm -d1 \/dev\/hda\u3000DMA\u6709\u52b9\u5316<br \/>\n# hdparm -i \/dev\/hda\u3000HD\u304c\u540c\u6642\u306b\u8aad\u307f\u8fbc\u3081\u308b\u30bb\u30af\u30bf\u6570<br \/>\n# hdparm -m16 \/dev\/hda\u3000\u540c\u6642\u8aad\u307f\u8fbc\u307f\u309216\u306b\u8a2d\u5b9a<br \/>\n# hdparm -a1024 \/dev\/hda\u3000readahead\u30921024\u306b\u8a2d\u5b9a\u3059\u308b<br \/>\n\u3000-a128\u3001-a256\u3001-a512\u3001-a1024\u3001-a2048\u3000\u6e2c\u5b9a\u7d50\u679c\u306e\u3088\u3044\u3082\u306e\u3092\u4f7f\u3046<br \/>\n# hdparm -k1 \/dev\/hda\u3000\u8a2d\u5b9a\u3092\u66f8\u304d\u8fbc\u307f<\/p>\n<p><strong>\u25a0\u30c7\u30a3\u30b9\u30af\u66f8\u304d\u8fbc\u307f\u306e\u524a\u6e1b<\/strong><br \/>\nLinux\u3067\u306f\u30d5\u30a1\u30a4\u30eb\u3092\u8aad\u3093\u3060\u6642\u306b\u3082atime\u3092\u66f4\u65b0\u3059\u308b\u305f\u3081\u66f4\u65b0\u3057\u306a\u3044\u8a2d\u5b9a\u3092\u3059\u308b\u3053\u3068\u3067\u3001\u66f8\u304d\u8fbc\u307f\u91cf\u3092\u6e1b\u3089\u3059\u3002<br \/>\n\u3053\u306e\u8a2d\u5b9a\u306f\u30c7\u30a3\u30b9\u30af\u306bSSD\u3092\u63a1\u7528\u3057\u3066\u3044\u308b\u969b\u306b\u7279\u306b\u6709\u52b9\u3002<\/p>\n<p>\/etc\/fstab\u306e\u30de\u30a6\u30f3\u30c8\u30aa\u30d7\u30b7\u30e7\u30f3\u3068\u3057\u3066\u300cnoatime\u300d\u3092\u6307\u5b9a\u3059\u308b<br \/>\n# vi \/etc\/fstab<br \/>\nLABEL=\/    \/    ext3    defaults,noatime  1 1\u3000\u2190noatime\u3092\u8ffd\u8a18<\/p>\n<p>\u518d\u30de\u30a6\u30f3\u30c8\u3059\u308b<br \/>\n# mount -o remount \/ <\/p>\n<p>mount\u30b3\u30de\u30f3\u30c9\u3067noatime\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d<br \/>\n# mount<br \/>\n\/dev\/hda1 on \/ type ext3 (rw,noatime)<\/p>\n<p><strong>\u25a0I\/O\u30b9\u30b1\u30b8\u30e5\u30fc\u30e9\u306e\u5909\u66f4<\/strong><br \/>\nCentOS\u7b49\u3067\u306f\u6a19\u6e96\u3067cfq\u304c\u63a1\u7528\u3055\u308c\u3066\u3044\u308b\u304c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u904b\u7528\u7b49\u3092\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306fdeadline\u304c\u671b\u307e\u3057\u3044\u3002<\/p>\n<p># echo deadline > \/sys\/block\/hda\/queue\/scheduler<br \/>\n\/sys\/block\/\u4ee5\u4e0b\u306f\u4f7f\u7528\u3057\u3066\u3044\u308b\u30c7\u30a3\u30b9\u30af\u306b\u5408\u308f\u305b\u3066\u5909\u66f4<\/p>\n<p>#cat \/sys\/block\/hda\/queue\/scheduler<br \/>\nnoop anticipatory [deadline] cfq\u3000\u2190\u3068\u306a\u3063\u3066\u3044\u308c\u3070OK\u3002<\/p>\n<p>\/etc\/rc.d\/rc.local \u306b\u4ee5\u4e0b\u3092\u8ffd\u8a18\u3057\u3066\u518d\u8d77\u52d5\u6642\u306b\u3082\u9069\u7528\u3055\u308c\u308b\u3088\u3046\u306b\u3059\u308b<br \/>\necho deadline > \/sys\/block\/hda\/queue\/scheduler<\/p>\n<p><strong>\u25a0\u30d7\u30ed\u30bb\u30b9\u30b9\u30ef\u30c3\u30d7\u306e\u6291\u5236<\/strong><br \/>\n\u30b9\u30ef\u30c3\u30d7\u304c\u767a\u751f\u3059\u308b\u3068\u30ec\u30b9\u30dd\u30f3\u30b9\u304c\u843d\u3061\u308b\u306e\u3067\u3001\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u305f\u3081\u306b\u30d7\u30ed\u30bb\u30b9\u304c\u30b9\u30ef\u30c3\u30d7\u3057\u306a\u3044\u3088\u3046\u8a2d\u5b9a\u3092\u8ffd\u52a0\u3059\u308b\u3002<\/p>\n<p>\/etc\/sysctl.conf\u306b\u4ee5\u4e0b\u3092\u8ffd\u8a18\u3059\u308b<br \/>\nvm.swappiness = 0<\/p>\n<p><strong>\u25a0\/proc\/sys\/\u4ee5\u4e0b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u5909\u66f4<\/strong><br \/>\n\u30ab\u30fc\u30cd\u30eb\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4fee\u6b63\u3057\u3066\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3092\u4e0a\u3052\u308b\u3002\uff08\uff09\u5185\u306f\u53c2\u8003\u5024<br \/>\n\u30de\u30b7\u30f3\u74b0\u5883\u3067\u6700\u9069\u5024\u306f\u7570\u306a\u308b\u306e\u3067\u8a66\u884c\u932f\u8aa4\u3059\u308b\u5fc5\u8981\u3042\u308a\u3002<\/p>\n<p>\u540c\u6642\u306b\u958b\u3051\u308b\u30d5\u30a1\u30a4\u30eb\u6570\u3092\u5897\u3084\u3059<br \/>\n\/proc\/sys\/fs\/file-max\uff08131072\uff09<\/p>\n<p>\u540c\u6642\u30b9\u30ec\u30c3\u30c9\u6570\u3092\u5897\u3084\u3059<br \/>\n\/proc\/sys\/kernel\/threads-max\uff08131072\uff09<\/p>\n<p>\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306e\u9001\u53d7\u4fe1\u53ef\u80fd\u901f\u5ea6\u3092\u4e0a\u3052\u308b<br \/>\n\/proc\/sys\/net\/core\/wmem_default\uff0865536\uff09<br \/>\n\/proc\/sys\/net\/core\/wmem_max\uff081048576\uff09<br \/>\n\/proc\/sys\/net\/core\/rmem_default\uff0865536\uff09<br \/>\n\/proc\/sys\/net\/core\/rmem_max\uff081048576\uff09<\/p>\n<p>\u30d7\u30ed\u30bb\u30c3\u30b5\u304c\u4e00\u5ea6\u306b\u51e6\u7406\u3059\u308b\u30d1\u30b1\u30c3\u30c8\u91cf\u3092\u5897\u3084\u3059<br \/>\n\/proc\/sys\/net\/core\/netdev_max_backlog\uff084096\uff09<\/p>\n<p>tcp\u306etime_wait\u3092\u4fdd\u6301\u3067\u304d\u308b\u4e0a\u9650\u3092\u4e0a\u3052\u308b<br \/>\n\/proc\/sys\/net\/ipv4\/tcp_max_tw_buckets\uff08131072\uff09<\/p>\n<p>\u5229\u7528\u53ef\u80fd\u306a\u5185\u90e8\u901a\u4fe1socket\u3092\u5897\u3084\u3059<br \/>\n\/proc\/sys\/net\/ipv4\/ip_local_port_range\uff0816384 65535\uff09<\/p>\n<p>\u8a2d\u5b9a\u3092\u8d77\u52d5\u6642\u306b\u81ea\u52d5\u8a2d\u5b9a\u3059\u308b\u305f\u3081\u306b\u306f\u4ee5\u4e0b\u306b\u8a18\u8ff0\u3059\u308b<br \/>\n\/etc\/sysctl.conf<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linux\u30b5\u30fc\u30d0\u306b\u304a\u3051\u308b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u9ad8\u901f\u5316\u306e\u305f\u3081\u306e\u8a2d\u5b9a CentOS5\u3001Ubuntu\u3001Debian\u3067\u5b9f\u884c\u3057\u3066\u307f\u305f\u3082\u306e\u3002\u52b9\u679c\u3042\u3063\u305f\u6c17\u304c\u3059\u308b\u3002 \u25a0\u30c7\u30a3\u30b9\u30af\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0 \u53c2\u8003URL http:\/\/www.itmedia.co &hellip; <a href=\"https:\/\/blog.isnext.net\/issy\/archives\/190\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Linux\u30b5\u30fc\u30d0\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u30e1\u30e2&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[20,39,49,33],"class_list":["post-190","post","type-post","status-publish","format-standard","hentry","category-linux","tag-centos","tag-debian","tag-tune","tag-ubuntu"],"_links":{"self":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts\/190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/comments?post=190"}],"version-history":[{"count":4,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts\/190\/revisions"}],"predecessor-version":[{"id":380,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/posts\/190\/revisions\/380"}],"wp:attachment":[{"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/media?parent=190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/categories?post=190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.isnext.net\/issy\/wp-json\/wp\/v2\/tags?post=190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}