{"id":1272,"date":"2011-02-02T13:15:40","date_gmt":"2011-02-02T04:15:40","guid":{"rendered":"http:\/\/mk.miko.jp\/blog\/?p=1272"},"modified":"2011-02-02T16:13:28","modified_gmt":"2011-02-02T07:13:28","slug":"%e4%bb%8a%e6%97%a5%e3%82%82%e3%83%a2%e3%83%b3%e3%82%ad%e3%83%bc%e3%83%81%e3%83%a5%e3%83%bc%e3%83%8b%e3%83%b3%e3%82%b0","status":"publish","type":"post","link":"http:\/\/mk.miko.jp\/blog\/archives\/1272","title":{"rendered":"\u4eca\u65e5\u3082\u30e2\u30f3\u30ad\u30fc\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0"},"content":{"rendered":"

\u3000Linux\u3088\u304f\u5206\u304b\u3063\u3066\u306a\u3044\u5206\u969b\u3067\u30ac\u30c1\u30e3\u30ac\u30c1\u30e3\u3068\u5f04\u308b\u306e\u3067\u3042\u308b\u3002\u30b7\u30ea\u30a2\u30eb\u30b3\u30f3\u30bd\u30fc\u30eb\u304c\u3042\u308b\u304b\u3089\u3068\u6cb9\u65ad\u3057\u304a\u3063\u3066\u3002<\/p>\n

\u3000\u3066\u304d\u3068\u30fc\u306bWeb\u3092\u6d41\u3057\u3066\u308b\u3068\u3001\u30d6\u30ed\u30c3\u30af\u30c7\u30d0\u30a4\u30b9\u306eI\/O\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3068\u3084\u3089\u304c\u6c17\u306b\u306a\u308b\u3002\u3075\u3080\u3002\u7269\u7406\u914d\u7f6e\u3092\u8003\u3048\u3066\u30ea\u30aa\u30fc\u30c0\u30fc\u3057\u305f\u308a\u3082\u3059\u308b\u306e\u304b\u3002\u30b2\u30b9\u30c8OS\u3067\u610f\u5473\u3042\u308b\u306e\u304b\u305d\u308c\u306f\u3002
\n\u3000\u7591\u308f\u3057\u3059\u304e\u308b\u306e\u3067\u518d\u3073\u3066\u304d\u3068\u30fc\u306b\u691c\u7d22\u3059\u308b\u3068\u3001RedHat\u306b\u7f6e\u3044\u3066\u3042\u308bOracle\u306aPDF\u8cc7\u6599\u306b\u6848\u306e\u5b9a\u300cVM\u306e\u30db\u30b9\u30c8\u3068\u30b2\u30b9\u30c8\u306e\u4e21\u65b9\u3067I\/O\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3059\u308b\u3068\u304b\u3080\u3057\u308d\u6709\u5bb3\u304f\u3055\u3044\u304b\u3089\u30b2\u30b9\u30c8\u306fnoop\u3067\u3044\u3044\u3093\u3058\u3083\u306d\u300d\u307f\u305f\u3044\u306b\u8aad\u3081\u308b\u3088\u30fc\u306a\u6c17\u304c\u3059\u308b\u4e00\u6587\u304c\u3002\u30c7\u30d5\u30a9\u3092noop\u306b\u8a2d\u5b9a\u3059\u308b\u65b9\u6cd5\u3082\u66f8\u3044\u3066\u3042\u308b\u306e\u3067\u3001\u305d\u306e\u901a\u308a\u306b\u3059\u308b\u3002\/etc\/grub.conf\u306ekernel\u884c\u306belevator=noop\u3092\u8ffd\u52a0\u304b\u3002\u3055\u3089\u306b\u3001RHEL5\u306f\u30ea\u30d6\u30fc\u30c8\u3057\u306a\u3044\u3067\u30e9\u30f3\u30bf\u30a4\u30e0\u3067\u8a2d\u5b9a\u51fa\u6765\u308b\u3088\u3001\u3068\u3042\u3063\u305f\u306e\u3067\u305d\u308c\u3082\u5b9f\u884c\u3002hda\u306e\u65b9\u306fecho noop > \/sys\/block\/hda\/queue\/scheduler<\/code>\u3063\u3066\u3068\u3053\u3089\u3057\u3044\u3002cat\u3067\u78ba\u8a8d\u3082\u5b8c\u4e86\u3002\u3053\u306e\u307e\u307e\u30ea\u30d6\u30fc\u30c8\u639b\u3051\u306a\u304f\u3066\u3044\u3044\u304b\u3002<\/p>\n

\u3000atime\u95a2\u4fc2\u3082\u9762\u767d\u305d\u3046\u3060\u3002NTFS\u3067\u3082\u6709\u540d\u306a\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u3067\u3059\u306d\u3002
\n\u3000\u3060\u304c\u3001\u3046\u30fc\u3093\u3002\u4f55\u304b\u3088\u304f\u5206\u304b\u3089\u3093\u3002\u30de\u30a6\u30f3\u30c8\u3057\u76f4\u3057\u3066\u3082relatime\u3063\u307d\u304f\u306a\u3089\u306a\u3044\u3067\u3054\u3056\u308b\u3002\u30e2\u30f3\u30ad\u30fc\u3060\u304b\u3089\u6295\u3052\u51fa\u3059\u3067\u3054\u3056\u308b\u3002\u8868\u5411\u304d\u306f\u300c\u526f\u4f5c\u7528\u304c\u30c8\u30c6\u30e2\u6016\u304b\u3063\u305f\u304b\u3089\u300d\u3068\u304b\u306b\u3057\u3088\u3046\u3002<\/p>\n

\u3000\u30ab\u30fc\u30cd\u30eb\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u3082\u9762\u767d\u305d\u3046\u306a\u306e\u304c\u3042\u308b\u306a\u30fc\u3002vm.swappiness\u3068\u304b\u8272\u3005\u3042\u308b\u306a\u3002\u307e\u30fc\u3067\u3082\u3001\u4eca\u306e\u3068\u3053\u308d\u30b9\u30ef\u30c3\u30d7\u6226\u7565\u306b\u554f\u984c\u306f\u7121\u3044\u304b\u3089\u5909\u3048\u306a\u304f\u3066\u3044\u3044\u3084\u3002
\n\u3000\u3042\u3068\u306f\u30fc\u3001\u3042\u30fc\u3001TCP\u30d0\u30c3\u30d5\u30a1\u304b\u30fc\u3002\u52b9\u679c\u3067\u304b\u3044\u304b\u3082\u306a\u30fc\u3002\u3069\u30fc\u306a\u3093\u3060\u308d\u30fc\u306d\u30fc\u3002
\n\u3000\u75b2\u308c\u3066\u3044\u3088\u3044\u3088\u30d0\u30ab\u306b\u306a\u3063\u3066\u304d\u3066\u3044\u308b\u3088\u3046\u3060\u3002\u3053\u308c\u8abf\u3079\u305f\u3089\u4ed6\u306e\u3053\u3068\u3057\u3088\u3046\u3002\u3048\u30fc\u3068\u3002\u3055\u304f\u3089\u306eVPS\u3060\u3068100Mbps\u51fa\u305b\u308c\u3070\u3044\u3044\u3093\u3060\u3088\u306d\u3001\u78ba\u304b\u3002\u3093\u3067\u30fc\u3001\u3046\u3061\u304b\u3089\u306eRTT\u306f\u30fc\u300114ms\u304b\u30fc\u3002
\n\u3000\u2026\u30de\u30b8\u3067\uff1f
\n\u3000\u305d\u3046\u304b\u3001\u305d\u3046\u3044\u3046\u6642\u4ee3\u306a\u3093\u3060\u306a\u3002150ms\u3068\u304b\u666e\u901a\u306b\u898b\u6163\u308c\u3066\u305f\u6c17\u304c\u3059\u308b\u304b\u3089\u3055\u3002\u6050\u308d\u3057\u3044\u3053\u3068\u3067\u3059\u3002
\n\u3000\u3064\u30fc\u304b\u3001\u4eca\u306e\u30d0\u30c3\u30d5\u30a1\u306e\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3057\u3088\u3046\u3002net.ipv4.tcp_moderate_rcvbuf=1\u3067\u3001net.ipv4.tcp_wmem\u306emax\u306f1048576\u304b\u3002\u3063\u3066\u3053\u3068\u306fBDP\u8a31\u5bb9\u5024\u3092800KB\u304f\u3089\u3044\u3067\u8a66\u7b97\u3059\u308b\u3068\u3001RTT\u8a31\u5bb9\u5024\u306f62.5ms\u304b\u3002\u5168\u7136\u60aa\u304f\u306a\u3044\u3063\u3059\u306d\u3002
\n\u3000\u3068\u3044\u3046\u8a33\u3067\u3001TCP\u30d0\u30c3\u30d5\u30a1\u306f\u4f55\u3082\u89e6\u3089\u306a\u3044\u30aa\u30c1\u306b\u3002<\/p>\n

\u3000\u7d50\u5c40\u3001I\/O\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3092noop\u306b\u3057\u305f\u3060\u3051\u3058\u3083\u3093\u3002\u304d\u3063\u3068\u4f55\u306e\u9055\u3044\u3082\u611f\u3058\u306a\u3044\u30ec\u30d9\u30eb\u3060\u3068\u601d\u3044\u307e\u3059\u3002\u306f\u306f\u306f\u3002\u6642\u9593\u306e\u7121\u99c4\u7121\u99c4\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u3000Linux\u3088\u304f\u5206\u304b\u3063\u3066\u306a\u3044\u5206\u969b\u3067\u30ac\u30c1\u30e3\u30ac\u30c1\u30e3\u3068\u5f04\u308b\u306e\u3067\u3042\u308b\u3002\u30b7\u30ea\u30a2\u30eb\u30b3\u30f3\u30bd\u30fc\u30eb\u304c\u3042\u308b\u304b\u3089\u3068\u6cb9\u65ad\u3057\u304a\u3063\u3066\u3002 \u3000\u3066\u304d\u3068\u30fc\u306bWeb\u3092\u6d41\u3057\u3066\u308b\u3068\u3001\u30d6\u30ed\u30c3\u30af\u30c7\u30d0\u30a4\u30b9\u306eI\/O\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u3068\u3084\u3089\u304c\u6c17\u306b\u306a\u308b\u3002\u3075\u3080\u3002\u7269\u7406\u914d\u7f6e\u3092\u8003\u3048\u3066 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"_links":{"self":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/posts\/1272"}],"collection":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/comments?post=1272"}],"version-history":[{"count":0,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/posts\/1272\/revisions"}],"wp:attachment":[{"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/media?parent=1272"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/categories?post=1272"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/mk.miko.jp\/blog\/wp-json\/wp\/v2\/tags?post=1272"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}