{"id":632,"date":"2014-03-03T01:01:51","date_gmt":"2014-03-02T16:01:51","guid":{"rendered":"http:\/\/1bed.allright.life\/?p=632"},"modified":"2020-04-19T00:21:29","modified_gmt":"2020-04-18T15:21:29","slug":"post-632","status":"publish","type":"post","link":"https:\/\/1bed.allright.life\/?p=632","title":{"rendered":"SSD \u306b\u512a\u3057\u3044\u8a2d\u5b9a\u3063\u3066\u306a\u3093\u3060\u308d\u3046\uff1f"},"content":{"rendered":"<p>\u5f8c\u8f29\u304b\u3089 1 \u4e07\u5186\u3067\u8cb7\u3063\u305f <a href=\"http:\/\/www.vaio.sony.co.jp\/Biz\/Products\/P1\/spec_vom1.html\">VAIO Type P (VGN-P90NS)<\/a>\u3002<br \/>\n\u3068\u308a\u3042\u3048\u305a\u8efd\u91cf Linux \u304c\u3044\u3044\u3060\u308d\u3046\u306a\u3068\u601d\u3044\u3001Lubuntu 13.10 \u3092\u5165\u308c\u305f\u3002<br \/>\n5\u5e74\u524d\u306e\u6a5f\u7a2e\u306e SSD \u306a\u3093\u3067\u5c11\u3057\u52b4\u308d\u3046\u304b\u306a\u3068\u601d\u3063\u3066\u8272\u3005\u8abf\u3079\u306a\u304c\u3089\u8a2d\u5b9a\u3057\u3066\u307f\u308b\u3002<br \/>\n\u30cf\u30c3\u30ad\u30ea\u8a00\u3048\u3070<strong>\u30c7\u30a3\u30b9\u30af\u3078\u306e\u66f8\u304d\u8fbc\u307f\u56de\u6570\u3092\u6e1b\u3089\u3059<\/strong>\u4e8b\u3092\u3084\u308c\u3070\u3044\u3044\u306e\u3060\u308d\u3046\u3002<\/p>\n<h3>swap \u3092\u30c7\u30a3\u30b9\u30af\u306b\u66f8\u304d\u8fbc\u307e\u306a\u3044\u3088\u3046\u306b\u3059\u308b<\/h3>\n<p>Lubuntu 13.10 \u3067\u306f swap \u9818\u57df\u304c\u6700\u521d\u304b\u3089 zram \u304c\u4f7f\u308f\u308c\u3066\u3044\u305f\u3002 zram \u3068\u306f\u30e1\u30e2\u30ea\u5185\u306b\u5727\u7e2e\u9818\u57df\u304c\u4f5c\u308c\u308b\u3002\u3064\u307e\u308a\u5727\u7e2e\u3055\u308c\u305f swap<br \/>\n\u3092\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u3002Fedora 19 \u3067\u306f\u4f7f\u308f\u308c\u3066\u306a\u304b\u3063\u305f\u306e\u3067\u3001\u6050\u3089\u304f\u8efd\u91cf Linux \u3067\u306f\u53e4\u3044 PC \u306b\u5165\u308c\u3089\u308c\u308b\u4e8b\u3092\u60f3\u5b9a\u3057\u3066\u3044\u3066\u6700\u521d\u304b\u3089 zram<br \/>\n\u3092\u4f7f\u3046\u3088\u3046\u306b\u306a\u3063\u3066\u308b\u306e\u3067\u306f\u306a\u3044\u304b\u306a\uff1f\u3068\u4e88\u60f3\u3002 \u3053\u308c\u306f\u30c7\u30a3\u30b9\u30af\u306e swap \u306f\u8981\u3089\u306a\u3044\u6c17\u304c\u3059\u308b\u306e\u3067\u3068\u308a\u3042\u3048\u305a\u30aa\u30d5\u308b\u3002<\/p>\n<p>\u30a8\u30c7\u30a3\u30bf\u3067 \/etc\/fstab \u3092\u958b\u304d\u3001\u81ea\u52d5\u30de\u30a6\u30f3\u30c8\u3092\u30aa\u30d5\u308b(noauto \u3092\u3064\u3051\u308b)\u3002<\/p>\n<pre><code class=\"language-bash\">UUID=d90e2864-9acc-4467-a4a4-42c1307070c8 none            swap sw,noauto 0 0<\/code><\/pre>\n<h3>\u305d\u3082\u305d\u3082 swap \u3057\u306b\u304f\u304f\u3059\u308b<\/h3>\n<p>\u6642\u3005 free \u3092\u53e9\u3044\u3066\u307f\u3066\u3044\u308b\u3068\u3001\u300c\u3042\u308c\uff1f\u3044\u3064 swap \u4f7f\u3063\u305f\u3093\u3060\u308d\uff1f\u300d\u3068\u3044\u3046\u6642\u304c\u3042\u308b\u3002\u30e1\u30e2\u30ea\u3092\u4f7f\u3044\u5207\u3063\u305f\u3089 swap<br \/>\n\u3092\u4f7f\u3046\u306e\u3067\u306f\u306a\u304f\u3001Kernel \u304c\u3042\u308b\u983b\u5ea6\u3067 swap \u3092\u4f7f\u3046\u3088\u3046\u306b\u3057\u3066\u3044\u308b\u304b\u3089\u3089\u3057\u3044\u3093\u3060\u3051\u3069\u3002<\/p>\n<p><a href=\"http:\/\/ja.wikipedia.org\/wiki\/Swappiness\">Wikipedia &#8211; Swappiness<\/a>\u3092\u53c2\u8003\u306b\u3059\u308b\u3068\u3001swappiness \u304c 0 \u306b\u8fd1\u3044\u7a0b\u30da\u30fc\u30b8\u30a2\u30a6\u30c8\u3057\u306b\u304f\u3044\u6a21\u69d8\u3002<\/p>\n<p>\u73fe\u5728\u306e\u5024\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/p>\n<pre><code class=\"language-bash\">$ cat \/proc\/sys\/vm\/swappiness\n60<\/code><\/pre>\n<p>\u3053\u3053\u3067\u306f 60 \u3068\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n<p>\u6b21\u306b Kernel \u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8a2d\u5b9a\u3059\u308b\u30d5\u30a1\u30a4\u30eb \/etc\/sysctl.conf \u3092\u30a8\u30c7\u30a3\u30bf\u3067\u958b\u304d\u3001\u30d4\u30fc\u30ad\u30fc\u904e\u304e\u306a\u3044\u3088\u3046\u306b\u3068\u308a\u3042\u3048\u305a 10 \u306b\u3059\u308b\u305f\u3081\u3001\u6b21\u3092\u8ffd\u8a18\u3059\u308b\u3002<\/p>\n<pre><code class=\"language-bash\">vm.swappiness = 10<\/code><\/pre>\n<h3>SSD \u3078\u306e\u30d0\u30c3\u30d5\u30a1\u30ad\u30e3\u30c3\u30b7\u30e5\u66f8\u304d\u8fbc\u307f\u9593\u9694\u3092\u8abf\u6574\u3059\u308b<\/h3>\n<p>\u30cd\u30c3\u30c8\u3067\u8abf\u3079\u308b\u3068\u3001\u30d0\u30c3\u30d5\u30a1\u30ad\u30e3\u30c3\u30b7\u30e5\u66f8\u304d\u8fbc\u307f\u9593\u9694\u3092\u8abf\u6574\u3059\u308b\u3068\u3044\u3046\u306e\u304c\u591a\u3044\u3002<br \/>\nPostgreSQL \u306e\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0(checkpoint_segments)\u3067\u3082\u4f3c\u305f\u3088\u3046\u306a\u4e8b\u3057\u305f\u3053\u3068\u3042\u3063\u305f\u3051\u3069\u3001\u30c7\u30a3\u30b9\u30af\u3078\u306e\u66f8\u304d\u8fbc\u307f\u3092\u307e\u3068\u3081\u3066\u884c\u3046\u3068\u3001\u7c92\u5ea6\u3055\u3048\u9069\u5207\u306a\u3089\u901f\u5ea6\u304c\u5411\u4e0a\u3057\u3001\u96fb\u529b\u6d88\u8cbb\u306b\u3082\u512a\u3057\u3044\u3068\u601d\u3046\u3002\u5f15\u3044\u3066\u306f SSD \u306b\u512a\u3057\u3044\u3068\u8a00\u3048\u308b\u306e\u304b\u306a\uff1f<br \/>\n\u3068\u308a\u3042\u3048\u305a\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30de\u30b7\u30f3\u306a\u306e\u3067\u305d\u3093\u306a\u306b\u30c7\u30a3\u30b9\u30af\u66f8\u304d\u8fbc\u307f\u306f\u884c\u308f\u308c\u306a\u3044\u3002\u307e\u3057\u3066\u3084 Type P \u306f\u305d\u3046\u3044\u3046\u7528\u9014\u3067\u4f7f\u308f\u306a\u3044\u3002\u305d\u306e\u305f\u3081\u30d0\u30c3\u30d5\u30a1\u30ad\u30e3\u30c3\u30b7\u30e5\u66f8\u304d\u8fbc\u307f\u9593\u9694\u3092\u9577\u304f\u3059\u308b\u3002<\/p>\n<p>\u3061\u306a\u307f\u306b\u3001\u30d0\u30c3\u30d5\u30a1\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u66f8\u304d\u8fbc\u307f\u306f pdflush \u304c\u884c\u3063\u3066\u3044\u308b\u3088\u3046\u3002<br \/>\n\u3053\u306e\u30da\u30fc\u30b8\u304c\u7406\u89e3\u3057\u6613\u304b\u3063\u305f\u3002<\/p>\n<p><a href=\"http:\/\/ether.dip.jp\/linux_tuning\/pdflush_control.html\">\u30ad\u30e3\u30c3\u30b7\u30e5\u30d0\u30c3\u30d5\u30a1\u306e\u5236\u5fa1<\/a><\/p>\n<p>\u73fe\u5728\u306e\u5024\u3092\u78ba\u8a8d\u3059\u308b\u3002<\/p>\n<pre><code class=\"language-bash\">$ cat \/proc\/sys\/vm\/dirty_writeback_centisecs \n500<\/code><\/pre>\n<p>5 \u79d2\u9593\u9694\u3067\u66f8\u304d\u8fbc\u307e\u308c\u3066\u3044\u308b\u3089\u3057\u3044\u3002<br \/>\n\u9593\u9694\u3092\u9577\u304f\u3059\u308b\u3068\u969c\u5bb3\u6642\u306b\u30c7\u30fc\u30bf\u55aa\u5931\u3068\u304b\u8003\u3048\u3089\u308c\u308b\u304c\u3001\u524d\u8ff0\u306e\u901a\u308a\u3001\u305d\u3093\u306a\u7528\u9014\u3067\u306f\u4f7f\u308f\u306a\u3044\u306e\u3067\u3001\u3068\u308a\u3042\u3048\u305a<br \/>\n1 \u5206\u9593\u9694\u3050\u3089\u3044\u306b\u3057\u3066\u69d8\u5b50\u3092\u307f\u308b\u3002 Kernel<br \/>\n\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8a2d\u5b9a\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u3092\u958b\u304f\u3002<\/p>\n<p>Kernel \u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u8a2d\u5b9a\u3059\u308b\u30d5\u30a1\u30a4\u30eb \/etc\/sysctl.conf \u3092\u30a8\u30c7\u30a3\u30bf\u3067\u958b\u304d\u3001\u6b21\u3092\u8ffd\u8a18\u3059\u308b\u3002<\/p>\n<pre><code class=\"language-bash\">vm.dirty_writeback_centisecs = 6000<\/code><\/pre>\n<h3>\/tmp \u3092 tmpfs \u306b\u3059\u308b<\/h3>\n<p>tmpfs \u3068\u306f\u3001\u30e1\u30e2\u30ea\u4e0a\u306b\u4f5c\u308b\u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u3002 fedora 19 \u3067\u306f \/tmp \u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067 tmpfs \u3060\u3063\u305f\u306e\u3060\u3051\u3069\u3001Lubuntu \u3067\u306f\u9055\u3046\u307f\u305f\u3044\u3002\/tmp \u306f<br \/>\nLibreOffice \u3068\u304b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u958b\u304f\u3068\u4f7f\u308f\u308c\u308b\u3002\u5272\u3068\u983b\u7e41\u306b\u66f8\u304d\u8fbc\u307f\u304c\u3042\u308b\u3068\u3053\u308d\u306a\u306e\u3067 tmpfs \u306b\u5909\u66f4\u3059\u308b\u3002<\/p>\n<p>\/etc\/fstab \u3092\u30a8\u30c7\u30a3\u30bf\u3067\u958b\u304d\u3001\u6b21\u306e\u3088\u3046\u306b\u4fee\u6b63\u3002<\/p>\n<p>\/tmp \u3092 tmpfs \u306b\u3059\u308b\u3002\u30e1\u30e2\u30ea\u3092\u4f7f\u3044\u3059\u304e\u304c\u6016\u3044\u306e\u3067\u300132M \u3067\u5236\u9650\u3057\u305f\u3002\u4f7f\u3063\u3066\u3044\u3066\u8db3\u308a\u306a\u304b\u3063\u305f\u3089\u4e0a\u9650\u5024\u3092\u5897\u3084\u305d\u3046\u3002<\/p>\n<pre><code class=\"language-bash\">tmpfs \/tmp tmpfs rw,size=32m 0 0<\/code><\/pre>\n<h3>\u30d5\u30a1\u30a4\u30eb\u30a2\u30af\u30bb\u30b9\u6642\u306e\u6700\u7d42\u30a2\u30af\u30bb\u30b9\u6642\u523b\u66f4\u65b0\u3092\u505c\u6b62\u3059\u308b<\/h3>\n<p>\u6614\u3005\u3001HDD \u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30f3\u3067\u306f\u5f53\u305f\u308a\u524d\u306e\u4f5c\u696d\u3060\u3063\u305f\u306a\u3002<br \/>\n\u5c11\u3057\u3067\u3082\u30c7\u30a3\u30b9\u30af\u30a2\u30af\u30bb\u30b9\u3092\u6e1b\u3089\u3057\u3066\u65e9\u304f\u3057\u3088\u3046\u3068\u8e8d\u8d77\u3060\u3063\u305f\u3002\u30ca\u30c4\u3044\u3002<\/p>\n<p>\/etc\/fstab \u3092\u30a8\u30c7\u30a3\u30bf\u3067\u958b\u304d\u3001\u6b21\u306e\u3088\u3046\u306b noatime \u3092\u3064\u3051\u308b\u3002<\/p>\n<pre><code class=\"language-bash\">UUID=87d8870e-4ad0-4d59-9303-5921e0f6a8f2 \/               ext4 noatime,errors=remount-ro 0 1<\/code><\/pre>\n<h3>mlocate \u306e\u983b\u5ea6\u3092\u5909\u66f4\u3059\u308b<\/h3>\n<p>locate \u306f\u30d5\u30a1\u30a4\u30eb\u3092\u9ad8\u901f\u3067\u691c\u7d22\u3059\u308b\u30b3\u30de\u30f3\u30c9\u3002mlocate \u306f locate<br \/>\n\u30b3\u30de\u30f3\u30c9\u306e\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3092\u4f5c\u6210\u3057\u3066\u3044\u308b\u3082\u306e\u3067\u3001cron.daily<br \/>\n\u306b\u5165\u3063\u3066\u3044\u308b\u3002\u3053\u308c\u3092 cron.monthly \u306b\u3067\u3082\u5165\u308c\u3066\u304a\u3053\u3046\u3002<\/p>\n<pre><code class=\"language-bash\">sudo mv \/etc\/cron.daily\/mlocate \/etc\/cron.monthly\/<\/code><\/pre>\n<h3>Firefox \u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092 tmpfs \u306b\u3059\u308b<\/h3>\n<p>\u30d6\u30e9\u30a6\u30b6\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306a\u3093\u3066\u3001\u6bce\u56de\u6d88\u3048\u3066\u3044\u3044\u306a\u30fc\u3063\u3068\u601d\u3063\u3066\u3044\u308b\u306e\u3067\u3001<br \/>\n\/etc\/fstab \u3092\u30a8\u30c7\u30a3\u30bf\u3067\u958b\u304f\u3002<\/p>\n<p>PC \u3092 1 \u56de\u8d77\u52d5\u3067 100M \u3082\u3042\u308c\u3070\u3044\u3044\u3060\u308d\u3046\u3002\u591a\u5206\u3002<\/p>\n<pre><code class=\"language-bash\">tmpfs \/home\/\u30e6\u30fc\u30b6\u30fc\u540d\/.cache\/mozilla tmpfs rw,size=100m 0 0<\/code><\/pre>\n<p>\u4eca\u3042\u308b\u30ad\u30e3\u30c3\u30b7\u30e5\u306f\u524a\u9664\u3057\u3066\u518d\u8d77\u52d5\u3002<\/p>\n<pre><code class=\"language-bash\">sudo rm -rf \/home\/\u30e6\u30fc\u30b6\u30fc\u540d\/.cache\/mozilla\/firefox<\/code><\/pre>\n<h3>\/var\/log \u3092 tmpfs \u306b\u3059\u308b<\/h3>\n<p>\u305d\u3082\u305d\u3082\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u30de\u30b7\u30f3\u3001\u632f\u308a\u8fd4\u3063\u3066\u306e\u30ed\u30b0\u306a\u3093\u3066\u6b86\u3093\u3069\u898b\u306a\u3044\u3002<br \/>\n\u30a8\u30e9\u30fc\u304c\u8d77\u304d\u305f\u305d\u306e\u6642\u306b\u898b\u308c\u308c\u3070\u3044\u3044\u306e\u3067\u30e1\u30e2\u30ea\u306b\u51fa\u3059\u3002<\/p>\n<ol>\n<li>\u30ea\u30ab\u30d0\u30ea\u30e2\u30fc\u30c9\u3067\u8d77\u52d5\u3059\u308b<\/li>\n<\/ol>\n<p><a href=\"http:\/\/kledgeb.blogspot.jp\/2012\/08\/ubuntu-1204_28.html\">Ubuntu 12.04 \u30ea\u30ab\u30d0\u30ea\u30fc\u30e2\u30fc\u30c9\u3067\u8d77\u52d5\u3059\u308b<\/a><br \/>\n\u3092\u53c2\u8003\u306b\u3057\u305f\u3002<\/p>\n<ol>\n<li>\/var\/log \u3092\u524a\u9664<\/li>\n<\/ol>\n<pre><code class=\"language-bash\">rm -rf \/var\/log<\/code><\/pre>\n<ol>\n<li>\u30ed\u30b0\u3092 32M \u4e0a\u9650\u3067\u8a2d\u5b9a\u3002<\/li>\n<\/ol>\n<p>\/etc\/fstab \u3092\u30a8\u30c7\u30a3\u30bf\u3067\u958b\u304d\u3001\u6b21\u306e\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u305f\u3002<\/p>\n<pre><code class=\"language-bash\">tmpfs \/var\/log tmpfs rw,size=32m 0 0<\/code><\/pre>\n<p>\u4ed6\u306b\u3082\u3042\u3063\u305f\u3089\u4ed8\u3051\u8db3\u305d\u3046\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u5f8c\u8f29\u304b\u3089 1 \u4e07\u5186\u3067\u8cb7\u3063\u305f VAIO Type P (VGN-P90NS)\u3002 \u3068\u308a\u3042\u3048\u305a\u8efd\u91cf Linux \u304c\u3044\u3044\u3060\u308d\u3046\u306a\u3068\u601d\u3044\u3001Lubuntu 13.10 \u3092\u5165\u308c\u305f\u3002 5\u5e74\u524d\u306e\u6a5f\u7a2e\u306e SSD \u306a\u3093\u3067\u5c11\u3057\u52b4\u308d\u3046\u304b\u306a\u3068\u601d\u3063\u3066 [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[51,52,53],"class_list":["post-632","post","type-post","status-publish","format-standard","hentry","category-linux","tag-lubuntu","tag-ssd","tag-zram"],"_links":{"self":[{"href":"https:\/\/1bed.allright.life\/index.php?rest_route=\/wp\/v2\/posts\/632","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/1bed.allright.life\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/1bed.allright.life\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/1bed.allright.life\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/1bed.allright.life\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=632"}],"version-history":[{"count":23,"href":"https:\/\/1bed.allright.life\/index.php?rest_route=\/wp\/v2\/posts\/632\/revisions"}],"predecessor-version":[{"id":3260,"href":"https:\/\/1bed.allright.life\/index.php?rest_route=\/wp\/v2\/posts\/632\/revisions\/3260"}],"wp:attachment":[{"href":"https:\/\/1bed.allright.life\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=632"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/1bed.allright.life\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=632"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/1bed.allright.life\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=632"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}