{"id":15863,"date":"2025-12-07T11:51:26","date_gmt":"2025-12-07T10:51:26","guid":{"rendered":"https:\/\/webhosting.de\/memory-fragmentation-webhosting-php-mysql-optimierung-bytefluss\/"},"modified":"2025-12-07T11:51:26","modified_gmt":"2025-12-07T10:51:26","slug":"%e3%83%a1%e3%83%a2%e3%83%aa%e3%81%ae%e6%96%ad%e7%89%87%e5%8c%96%e3%80%81%e3%82%a6%e3%82%a7%e3%83%96%e3%83%9b%e3%82%b9%e3%83%86%e3%82%a3%e3%83%b3%e3%82%b0%e3%80%81php%e3%80%81mysql%e3%80%81%e6%9c%80","status":"publish","type":"post","link":"https:\/\/webhosting.de\/ja\/memory-fragmentation-webhosting-php-mysql-optimierung-bytefluss\/","title":{"rendered":"\u30a6\u30a7\u30d6\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306b\u304a\u3051\u308b\u30e1\u30e2\u30ea\u306e\u65ad\u7247\u5316\uff1aPHP \u304a\u3088\u3073 MySQL \u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u843d\u3068\u3057\u7a74"},"content":{"rendered":"<p><strong>\u30e1\u30e2\u30ea\u306e\u65ad\u7247\u5316<\/strong> \u30a6\u30a7\u30d6\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3067\u306f\u3001\u5341\u5206\u306a RAM \u304c\u5229\u7528\u53ef\u80fd\u3067\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u30e1\u30e2\u30ea\u304c\u591a\u304f\u306e\u5c0f\u3055\u306a\u30d6\u30ed\u30c3\u30af\u306b\u5206\u5272\u3055\u308c\u3001\u3088\u308a\u5927\u304d\u306a\u5272\u308a\u5f53\u3066\u304c\u5931\u6557\u3059\u308b\u305f\u3081\u3001PHP\u2011FPM \u304a\u3088\u3073 MySQL \u306e\u901f\u5ea6\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u304c\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30b3\u30b9\u30c8\u3092\u5897\u52a0\u3055\u305b\u3001\u30b9\u30ef\u30c3\u30d7\u3092\u30c8\u30ea\u30ac\u30fc\u3059\u308b\u7406\u7531\u3001\u304a\u3088\u3073 PHP \u304a\u3088\u3073 MySQL \u306e\u30ed\u30fc\u30c9\u6642\u9593\u3001\u4fe1\u983c\u6027\u3001\u30b9\u30b1\u30fc\u30e9\u30d3\u30ea\u30c6\u30a3\u3092\u660e\u3089\u304b\u306b\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306e\u3001PHP \u304a\u3088\u3073 MySQL \u306e\u7684\u3092\u7d5e\u3063\u305f\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u306e\u5fc5\u8981\u6027\u306b\u3064\u3044\u3066\u3001\u5b9f\u8df5\u7684\u306a\u4f8b\u3092\u6319\u3052\u3066\u8aac\u660e\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<ul>\n  <li><strong>\u30d4\u30fc\u30a8\u30c3\u30c1\u30d4\u30fc\u30a8\u30d5\u30d4\u30fc\u30a8\u30e0<\/strong> \u30ea\u30b5\u30a4\u30af\u30eb\uff1apm.max_requests \u306b\u3088\u3063\u3066\u30d7\u30ed\u30bb\u30b9\u3092\u5b9a\u671f\u7684\u306b\u518d\u8d77\u52d5\u3059\u308b<\/li>\n  <li><strong>\u30d0\u30c3\u30d5\u30a1<\/strong> \u6295\u4e0e\u91cf\uff1aMySQL\u306e\u63a5\u7d9a\u3054\u3068\u306e\u30d0\u30c3\u30d5\u30a1\u306f\u63a7\u3048\u3081\u306b\u8a2d\u5b9a\u3059\u308b<\/li>\n  <li><strong>\u30b9\u30ef\u30c3\u30d7<\/strong> \u56de\u907f\u65b9\u6cd5\uff1a\u30b9\u30ef\u30c3\u30d7\u6027\u3092\u4f4e\u4e0b\u3055\u305b\u3001NUMA \u306b\u6ce8\u610f\u3059\u308b<\/li>\n  <li><strong>\u8868<\/strong> \u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\uff1aData_free \u3092\u78ba\u8a8d\u3057\u3001\u7684\u3092\u7d5e\u3063\u3066\u6700\u9069\u5316<\/li>\n  <li><strong>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0<\/strong> \u6d3b\u7528\uff1a\u30c8\u30ec\u30f3\u30c9\u3092\u3044\u3061\u65e9\u304f\u898b\u6975\u3081\u3066\u884c\u52d5\u3059\u308b<\/li>\n<\/ul>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/php-mysql-fragmentierung-7243.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u306e\u65e5\u5e38\u696d\u52d9\u306b\u304a\u3044\u3066\u3001\u30e1\u30e2\u30ea\u306e\u65ad\u7247\u5316\u3068\u306f\u3069\u3046\u3044\u3046\u610f\u5473\u304c\u3042\u308b\u306e\u3067\u3057\u3087\u3046\u304b\uff1f<\/h2>\n\n<p>\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u3067\u51fa\u4f1a\u3046 <strong>\u30d5\u30e9\u30b0\u30e1\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3<\/strong> \u9577\u6642\u9593\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u5e38\u306b\u30e1\u30e2\u30ea\u3092\u8981\u6c42\u3057\u3066\u89e3\u653e\u3059\u308b\u305f\u3081\u3001\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593\u306b\u30ae\u30e3\u30c3\u30d7\u304c\u751f\u3058\u307e\u3059\u3002\u7a7a\u304d RAM \u306e\u5408\u8a08\u306f\u5927\u304d\u3044\u3088\u3046\u306b\u898b\u3048\u307e\u3059\u304c\u3001\u5927\u304d\u306a\u5272\u308a\u5f53\u3066\u306b\u5fc5\u8981\u306a\u9023\u7d9a\u3057\u305f\u30d6\u30ed\u30c3\u30af\u304c\u4e0d\u8db3\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u5272\u308a\u5f53\u3066\u306e\u8a66\u884c\u304c\u9045\u304f\u306a\u308a\u307e\u3059\u3002 \u3053\u308c\u306f\u3001PHP\u2011FPM \u30ef\u30fc\u30ab\u30fc\u3084 mysqld \u3067\u3001\u6570\u6642\u9593\u7d4c\u3064\u3068\u300c\u80a5\u5927\u5316\u300d\u3057\u3066\u3044\u308b\u3088\u3046\u306b\u898b\u3048\u308b\u3053\u3068\u3067\u78ba\u8a8d\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u5f71\u97ff\u306b\u3088\u308a\u3001\u5404\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30b3\u30b9\u30c8\u304c\u308f\u305a\u304b\u306b\u9ad8\u304f\u306a\u308a\u3001\u8ca0\u8377\u304c\u304b\u304b\u308b\u3068\u5fdc\u7b54\u6642\u9593\u304c\u8457\u3057\u304f\u9577\u304f\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001CPU \u3084\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306b\u554f\u984c\u304c\u306a\u3044\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001\u30bb\u30fc\u30eb\u3084\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u306a\u3069\u306e\u30d4\u30fc\u30af\u6642\u306b\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>PHP-FPM \u304c\u65ad\u7247\u5316\u3092\u5f15\u304d\u8d77\u3053\u3059\u7406\u7531<\/h2>\n\n<p>\u5404 PHP\u2011FPM \u30ef\u30fc\u30ab\u30fc\u306f\u3001\u30b3\u30fc\u30c9\u3001\u30d7\u30e9\u30b0\u30a4\u30f3\u3001\u304a\u3088\u3073\u30c7\u30fc\u30bf\u3092\u72ec\u81ea\u306e <strong>\u30a2\u30c9\u30ec\u30b9\u7a7a\u9593<\/strong>, \u3001\u3055\u307e\u3056\u307e\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3057\u3001\u89e3\u653e\u6642\u306b\u6563\u5728\u3059\u308b\u30ae\u30e3\u30c3\u30d7\u3092\u6b8b\u3057\u307e\u3059\u3002\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u30d7\u30ed\u30bb\u30b9\u306f\u6210\u9577\u3057\u3001\u5185\u90e8\u3067\u306f\u30e1\u30e2\u30ea\u3092\u89e3\u653e\u3057\u307e\u3059\u304c\u3001\u5fc5\u305a\u3057\u3082\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306b\u89e3\u653e\u3059\u308b\u308f\u3051\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u65ad\u7247\u5316\u304c\u9032\u307f\u307e\u3059\u3002\u3055\u307e\u3056\u307e\u306a\u30b9\u30af\u30ea\u30d7\u30c8\u3001\u30a4\u30f3\u30dd\u30fc\u30c8\u30b8\u30e7\u30d6\u3001\u753b\u50cf\u51e6\u7406\u304c\u3001\u3053\u306e\u6df7\u5408\u72b6\u614b\u3092\u3055\u3089\u306b\u60aa\u5316\u3055\u305b\u3001\u5272\u308a\u5f53\u3066\u30d1\u30bf\u30fc\u30f3\u306e\u5909\u5316\u306b\u3064\u306a\u304c\u308a\u307e\u3059\u3002 \u79c1\u306f\u3001\u8ca0\u8377\u3068\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u4e00\u5b9a\u3067\u3042\u308b\u306b\u3082\u304b\u304b\u308f\u3089\u305a\u3001RAM \u306e\u4f7f\u7528\u91cf\u304c\u5f90\u3005\u306b\u5897\u52a0\u3057\u3066\u3044\u308b\u306e\u3092\u89b3\u5bdf\u3057\u3066\u3044\u307e\u3059\u3002\u30ea\u30b5\u30a4\u30af\u30eb\u3092\u884c\u308f\u306a\u3044\u5834\u5408\u3001\u3053\u306e\u5185\u90e8\u7684\u306a\u65ad\u7247\u5316\u306b\u3088\u308a\u5272\u308a\u5f53\u3066\u304c\u4f4e\u901f\u5316\u3055\u308c\u3001\u8a2a\u554f\u8005\u6570\u304c\u591a\u3044\u5834\u5408\u306e\u8a08\u753b\u7acb\u6848\u304c\u56f0\u96e3\u306b\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/memoryfragmentierung_meeting_7421.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30ed\u30fc\u30c9\u6642\u9593\u3068\u4fe1\u983c\u6027\u306b\u9855\u8457\u306a\u5f71\u97ff<\/h2>\n\n<p>\u65ad\u7247\u5316\u3055\u308c\u305f\u30d7\u30ed\u30bb\u30b9\u306f\u3088\u308a\u591a\u304f\u306e <strong>\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/strong> \u30e1\u30e2\u30ea\u7ba1\u7406\u306b\u304a\u3044\u3066\u3001\u3053\u308c\u306f\u7ba1\u7406\u30d0\u30c3\u30af\u30a8\u30f3\u30c9\u306e\u901f\u5ea6\u4f4e\u4e0b\u3084\u30c1\u30a7\u30c3\u30af\u30a2\u30a6\u30c8\u306e\u9045\u5ef6\u3068\u3057\u3066\u73fe\u308c\u307e\u3059\u3002\u7279\u306b WordPress \u30b7\u30e7\u30c3\u30d7\u3084\u5927\u898f\u6a21\u306a CMS \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306f\u3001\u65ad\u7247\u5316\u3055\u308c\u305f\u30ef\u30fc\u30ab\u30fc\u306b\u591a\u6570\u306e\u540c\u6642\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u96c6\u4e2d\u3059\u308b\u3068\u53cd\u5fdc\u304c\u9045\u304f\u306a\u308a\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u30bf\u30a4\u30e0\u30a2\u30a6\u30c8\u3001502\/504 \u30a8\u30e9\u30fc\u3001NGINX \u307e\u305f\u306f Apache \u5074\u3067\u306e\u30ea\u30c8\u30e9\u30a4\u306e\u5897\u52a0\u304c\u767a\u751f\u3057\u307e\u3059\u3002 \u79c1\u306f\u3001\u5fdc\u7b54\u6642\u9593\u306e\u30d4\u30fc\u30af\u3001RAM \u30d9\u30fc\u30b9\u30e9\u30a4\u30f3\u306e\u4e0a\u6607\u3001\u30b9\u30ef\u30c3\u30d7\u4f7f\u7528\u91cf\u306e\u6025\u6fc0\u306a\u5897\u52a0\u306a\u3069\u306e\u6307\u6a19\u304b\u3089\u3001\u3053\u306e\u3088\u3046\u306a\u72b6\u6cc1\u3092\u8aad\u307f\u53d6\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3092\u7121\u8996\u3059\u308b\u3068\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u4f4e\u4e0b\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u30a8\u30af\u30b9\u30da\u30ea\u30a8\u30f3\u30b9\u304c\u60aa\u5316\u3057\u3001\u91cd\u8981\u306a\u30d5\u30a1\u30cd\u30eb\u3067\u306e\u96e2\u8131\u7387\u304c\u4e0a\u6607\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>PHP-FPM \u3092\u6b63\u3057\u304f\u8a2d\u5b9a\u3059\u308b\uff1a\u5236\u9650\u3001\u30d7\u30fc\u30eb\u3001\u30ea\u30b5\u30a4\u30af\u30eb<\/h2>\n\n<p>\u79c1\u306f\u73fe\u5b9f\u7684\u306a <strong>\u9650\u754c<\/strong>, \u3001\u5206\u96e2\u3055\u308c\u305f\u30d7\u30fc\u30eb\u3001\u304a\u3088\u3073\u65ad\u7247\u5316\u3092\u6291\u5236\u3059\u308b\u305f\u3081\u306e\u4e00\u8cab\u3057\u305f\u30ea\u30b5\u30a4\u30af\u30eb\u3002pm.max_requests \u306f\u3001\u7a3c\u50cd\u4e2d\u306e\u8a2a\u554f\u8005\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u3001\u30ef\u30fc\u30ab\u30fc\u304c\u5b9a\u671f\u7684\u306b\u518d\u8d77\u52d5\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u30d7\u30ed\u30d5\u30a1\u30a4\u30eb\u3067\u8ca0\u8377\u306e\u30d4\u30fc\u30af\u304c\u3042\u308b\u5834\u5408\u306b\u306f\u3001pm = dynamic \u304c\u3088\u308a\u9069\u3057\u3066\u3044\u308b\u3053\u3068\u304c\u591a\u3044\u3067\u3059\u304c\u3001\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u304c\u5c11\u306a\u3044\u30b5\u30a4\u30c8\u3067\u306f pm = ondemand \u306e\u65b9\u304c RAM \u3092\u7bc0\u7d04\u3067\u304d\u307e\u3059\u3002\u30b5\u30a4\u30c8\u3054\u3068\u306e memory_limit \u306f\u610f\u56f3\u7684\u306b\u63a7\u3048\u3081\u306b\u8a2d\u5b9a\u3057\u3001\u5b9f\u969b\u306e\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u8003\u616e\u3057\u3066\u8abf\u6574\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30c8\u30d4\u30c3\u30af\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u306e\u30c8\u30d4\u30c3\u30af\u3067\u6982\u8981\u3092\u8aac\u660e\u3057\u3066\u3044\u307e\u3059\u3002 <a href=\"https:\/\/webhosting.de\/ja\/php%e3%81%ae%e3%83%a1%e3%83%a2%e3%83%aa%e5%88%b6%e9%99%90%e3%81%ae%e5%a2%97%e5%8a%a0%e3%81%ab%e3%82%88%e3%82%8b%e3%82%a8%e3%83%a9%e3%83%bc%e3%81%ae%e5%9b%9e%e9%81%bf\/\">PHP\u306e\u30e1\u30e2\u30ea\u5236\u9650<\/a>. \u3055\u3089\u306b\u3001\u8ca0\u8377\u306e\u9ad8\u3044\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306f\u5225\u306e\u30d7\u30fc\u30eb\u306b\u5206\u96e2\u3057\u3066\u3001\u30e1\u30e2\u30ea\u3092\u5927\u91cf\u306b\u6d88\u8cbb\u3059\u308b\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u3059\u3079\u3066\u306e\u30b5\u30a4\u30c8\u306b\u5f71\u97ff\u3092\u4e0e\u3048\u306a\u3044\u3088\u3046\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/memory-fragmentierung-php-mysql-7348.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>OPcache\u3001\u30d7\u30ea\u30ed\u30fc\u30c9\u3001PHP\u30a2\u30ed\u30b1\u30fc\u30bf\u30fc\u306b\u3064\u3044\u3066<\/h2>\n\n<p>PHP \u30d7\u30ed\u30bb\u30b9\u306b\u304a\u3051\u308b\u65ad\u7247\u5316\u3092\u6291\u5236\u3059\u308b\u305f\u3081\u3001\u79c1\u306f\u9069\u5207\u306b\u8a2d\u8a08\u3055\u308c\u305f <strong>\u30aa\u30da\u30ad\u30e3\u30c3\u30b7\u30e5<\/strong>. \u5e83\u3005\u3068\u3057\u3066\u3044\u3066\u3001\u3067\u3082\u3084\u308a\u3059\u304e\u3058\u3083\u306a\u3044 opcache.memory_consumption \u3068\u5341\u5206\u306a\u5185\u90e8\u5316\u6587\u5b57\u5217\u306f\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u3054\u3068\u306e\u7e70\u308a\u8fd4\u3057\u306e\u5272\u308a\u5f53\u3066\u3092\u6e1b\u3089\u3057\u3066\u304f\u308c\u308b\u3002\u30d2\u30c3\u30c8\u7387\u3001\u7121\u99c4\u3001\u6b8b\u308a\u306e\u5bb9\u91cf\u3092\u89b3\u5bdf\u3057\u3066\u308b\u3088\u3002\u6642\u9593\u306e\u7d4c\u904e\u3068\u3068\u3082\u306b\u7121\u99c4\u304c\u5897\u3048\u305f\u3089\u3001\u30ef\u30fc\u30ab\u30fc\u3092\u7121\u5236\u9650\u306b\u5897\u3084\u3059\u3088\u308a\u3082\u3001\u30ea\u30ed\u30fc\u30c9\u3092\u8a08\u753b\u3057\u305f\u307b\u3046\u304c\u3044\u3044\u3002 \u30d7\u30ea\u30ed\u30fc\u30c9\u306f\u3001\u30b3\u30fc\u30c9\u30d9\u30fc\u30b9\u304c\u9069\u5207\u306b\u6e96\u5099\u3055\u308c\u3066\u3044\u308b\u5834\u5408\u3001\u30db\u30c3\u30c8\u30b3\u30fc\u30c9\u3092\u30e1\u30e2\u30ea\u306b\u5b89\u5b9a\u7684\u306b\u4fdd\u6301\u3057\u3001\u5272\u308a\u5f53\u3066\u30d1\u30bf\u30fc\u30f3\u3092\u5e73\u6e96\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u79c1\u306f\u6b21\u306e\u70b9\u306b\u3082\u6ce8\u610f\u3092\u6255\u3063\u3066\u3044\u307e\u3059\u3002 <strong>\u30a2\u30ed\u30b1\u30fc\u30bf\u30fc\u306e\u9078\u629e<\/strong>: \u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u3001PHP\u2011FPM \u304a\u3088\u3073\u62e1\u5f35\u6a5f\u80fd\u306f\u3055\u307e\u3056\u307e\u306a Malloc \u5b9f\u88c5\u3067\u52d5\u4f5c\u3057\u307e\u3059\u3002jemalloc \u306a\u3069\u306e\u4ee3\u66ff\u30a2\u30ed\u30b1\u30fc\u30bf\u30fc\u306f\u3001\u4e00\u90e8\u306e\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u3067\u306f\u65ad\u7247\u5316\u3092\u5927\u5e45\u306b\u8efd\u6e1b\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u30c7\u30d0\u30c3\u30b0\u3001DTrace\/eBPF \u30d7\u30ed\u30d5\u30a1\u30a4\u30ea\u30f3\u30b0\u3001\u304a\u3088\u3073\u30e1\u30e2\u30ea\u30c0\u30f3\u30d7\u306f\u30a2\u30ed\u30b1\u30fc\u30bf\u30fc\u306b\u3088\u3063\u3066\u52d5\u4f5c\u304c\u7570\u306a\u308b\u305f\u3081\u3001\u79c1\u306f\u3053\u306e\u3088\u3046\u306a\u5909\u66f4\u306f\u30c6\u30b9\u30c8\u3092\u7d4c\u3066\u304b\u3089\u5c55\u958b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<p>\u753b\u50cf\u51e6\u7406\u3084\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u306a\u3069\u306e\u30e1\u30e2\u30ea\u3092\u5927\u91cf\u306b\u6d88\u8cbb\u3059\u308b\u30bf\u30b9\u30af\u306b\u306f\u3001\u3088\u308a\u53b3\u3057\u3044\u5236\u9650\u306e\u3042\u308b\u500b\u5225\u306e\u30d7\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30e1\u30a4\u30f3\u30d7\u30fc\u30eb\u304c\u5236\u5fa1\u4e0d\u80fd\u306b\u62e1\u5927\u3059\u308b\u3053\u3068\u3092\u9632\u304e\u3001\u65ad\u7247\u5316\u3092\u9694\u96e2\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002 \u3055\u3089\u306b\u3001\u30e1\u30e2\u30ea\u3092\u5927\u91cf\u306b\u6d88\u8cbb\u3059\u308b\u62e1\u5f35\u6a5f\u80fd\uff08\u74b0\u5883\u5909\u6570\u306a\u3069\uff09\u3092\u5236\u9650\u3057\u3001\u30d0\u30c3\u30af\u30d7\u30ec\u30c3\u30b7\u30e3\u30fc\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u5927\u304d\u306a\u30d0\u30c3\u30d5\u30a1\u3092\u5fc5\u8981\u3068\u3059\u308b\u30ea\u30af\u30a8\u30b9\u30c8\u306f\u3001\u3059\u3079\u3066\u306e\u30ef\u30fc\u30ab\u30fc\u3092\u540c\u6642\u306b\u81a8\u5f35\u3055\u305b\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30b9\u30ed\u30c3\u30c8\u30ea\u30f3\u30b0\u3055\u308c\u308b\u304b\u3001\u975e\u540c\u671f\u30ad\u30e5\u30fc\u306b\u30aa\u30d5\u30ed\u30fc\u30c9\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n<h2>MySQL \u306e\u30e1\u30e2\u30ea\u3092\u7406\u89e3\u3059\u308b\uff1a\u30d0\u30c3\u30d5\u30a1\u3001\u63a5\u7d9a\u3001\u30c6\u30fc\u30d6\u30eb<\/h2>\n\n<p>MySQL\u3067\u306f\u3001\u30b0\u30ed\u30fc\u30d0\u30eb <strong>\u30d0\u30c3\u30d5\u30a1<\/strong> InnoDB \u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u3001\u63a5\u7d9a\u3054\u3068\u306e\u30d0\u30c3\u30d5\u30a1\u3001\u304a\u3088\u3073\u64cd\u4f5c\u3054\u3068\u306b\u62e1\u5927\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u4e00\u6642\u69cb\u9020\u306a\u3069\u3067\u3059\u3002\u5024\u304c\u5927\u304d\u3059\u304e\u308b\u3068\u3001\u63a5\u7d9a\u8ca0\u8377\u304c\u9ad8\u3044\u5834\u5408\u306b RAM \u8981\u4ef6\u304c\u7206\u767a\u7684\u306b\u5897\u52a0\u3057\u3001OS \u30ec\u30d9\u30eb\u3067\u306e\u65ad\u7247\u5316\u304c\u5897\u52a0\u3057\u307e\u3059\u3002 \u3055\u3089\u306b\u3001\u66f4\u65b0\u3084\u524a\u9664\u306b\u3088\u3063\u3066\u30c6\u30fc\u30d6\u30eb\u304c\u65ad\u7247\u5316\u3055\u308c\u3001Data_free \u90e8\u5206\u304c\u6b8b\u3063\u3066\u3001\u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u306e\u5229\u7528\u52b9\u7387\u304c\u4f4e\u4e0b\u3059\u308b\u3093\u3060\u3002\u3060\u304b\u3089\u3001\u30b5\u30a4\u30ba\u3001\u30d2\u30c3\u30c8\u7387\u3001\u4e00\u6642\u30c7\u30a3\u30b9\u30af\u30c6\u30fc\u30d6\u30eb\u306e\u6570\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u308b\u3088\u3002\u6b21\u306e\u6982\u8981\u306f\u3001\u5178\u578b\u7684\u306a\u75c7\u72b6\u3092\u6b63\u78ba\u306b\u7279\u5b9a\u3057\u3066\u3001\u5bfe\u7b56\u3092\u6bd4\u8f03\u691c\u8a0e\u3059\u308b\u306e\u306b\u5f79\u7acb\u3063\u3066\u308b\u3088\u3002.<\/p>\n\n<table>\n  <thead>\n    <tr>\n      <th>\u75c7\u72b6<\/th>\n      <th>\u63a8\u5b9a\u539f\u56e0<\/th>\n      <th>\u6e2c\u5b9a<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>RAM\u306f\u7740\u5b9f\u306b\u5897\u52a0\u3057\u3001\u30b9\u30ef\u30c3\u30d7\u304c\u958b\u59cb\u3055\u308c\u307e\u3059\u3002<\/td>\n      <td>\u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u304c\u5927\u304d\u3059\u304e\u308b\u3001\u307e\u305f\u306f\u63a5\u7d9a\u30d0\u30c3\u30d5\u30a1\u304c\u591a\u3059\u304e\u308b<\/td>\n      <td>\u30d7\u30fc\u30eb\u3092\u9069\u5207\u306a\u30b5\u30a4\u30ba\u306b\u5236\u9650\u3057\u3001\u63a5\u7d9a\u30d0\u30c3\u30d5\u30a1\u306b\u3088\u3063\u3066\u524a\u6e1b\u3059\u308b<\/td>\n    <\/tr>\n    <tr>\n      <td>\u591a\u304f\u306e\u9045\u3044\u30bd\u30fc\u30c8\/\u7d50\u5408<\/td>\n      <td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u6b20\u843d\u3001\u904e\u5270\u306a\u30bd\u30fc\u30c8\/\u7d50\u5408\u30d0\u30c3\u30d5\u30a1<\/td>\n      <td>\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u78ba\u8a8d\u3057\u3001\u30bd\u30fc\u30c8\/\u7d50\u5408\u306f\u63a7\u3048\u3081\u306b\u4fdd\u3064<\/td>\n    <\/tr>\n    <tr>\n      <td>\u30c6\u30fc\u30d6\u30eb\u5185\u306e\u5927\u304d\u306a Data_free<\/td>\n      <td>\u5f37\u529b\u306a\u66f4\u65b0\/\u524a\u9664\u3001\u30da\u30fc\u30b8\u304c\u65ad\u7247\u5316<\/td>\n      <td>\u7684\u3092\u7d5e\u3063\u305f\u6700\u9069\u5316\u3001\u30a2\u30fc\u30ab\u30a4\u30d6\u3001\u30b9\u30ad\u30fc\u30de\u306e\u5408\u7406\u5316<\/td>\n    <\/tr>\n    <tr>\n      <td>\u4e00\u6642\u30c7\u30a3\u30b9\u30af\u30c6\u30fc\u30d6\u30eb\u306e\u30d4\u30fc\u30af<\/td>\n      <td>tmp_table_size \u304c\u5c0f\u3055\u3059\u304e\u308b\u3001\u307e\u305f\u306f\u4e0d\u9069\u5207\u306a\u30af\u30a8\u30ea<\/td>\n      <td>\u5024\u3092\u9069\u5ea6\u306b\u4e0a\u3052\u3001\u30af\u30a8\u30ea\u3092\u518d\u69cb\u7bc9\u3059\u308b<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n<h2>MySQL \u30e1\u30e2\u30ea\u306e\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\uff1a\u30b5\u30a4\u30ba\u3092\u30aa\u30fc\u30d0\u30fc\u30b5\u30a4\u30ba\u3067\u306f\u306a\u304f\u9078\u629e\u3059\u308b<\/h2>\n\n<p>InnoDB \u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u306f\u3001 <strong>\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0<\/strong> \u30d5\u30a1\u30a4\u30eb\u30b7\u30b9\u30c6\u30e0\u30ad\u30e3\u30c3\u30b7\u30e5\u3068\u30b5\u30fc\u30d3\u30b9\u306b\u5341\u5206\u306a\u4f59\u88d5\u3092\u78ba\u4fdd\u3057\u307e\u3059\u3002\u7279\u306b\u3001Web \u3068 DB \u3092\u7d44\u307f\u5408\u308f\u305b\u305f\u30b5\u30fc\u30d0\u30fc\u3067\u306f\u91cd\u8981\u3067\u3059\u3002 sort_buffer_size\u3001join_buffer_size\u3001read_buffer \u306a\u3069\u306e\u63a5\u7d9a\u30d0\u30c3\u30d5\u30a1\u306f\u3001\u591a\u6570\u306e\u540c\u6642\u63a5\u7d9a\u306b\u3088\u3063\u3066 RAM \u30b9\u30c8\u30fc\u30e0\u304c\u767a\u751f\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u63a7\u3048\u3081\u306b\u30b9\u30b1\u30fc\u30ea\u30f3\u30b0\u3057\u3066\u3044\u307e\u3059\u3002tmp_table_size \u304a\u3088\u3073 max_heap_table_size \u306f\u3001\u91cd\u8981\u5ea6\u306e\u4f4e\u3044\u64cd\u4f5c\u3067\u5de8\u5927\u306a\u30a4\u30f3\u30e1\u30e2\u30ea\u30c6\u30fc\u30d6\u30eb\u304c\u8981\u6c42\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u4ed6\u306e\u8abf\u6574\u9805\u76ee\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002 <a href=\"https:\/\/webhosting.de\/ja\/mysql%e3%81%ae%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e%e3%83%b3%e3%82%b9%e3%82%92%e6%9c%80%e9%81%a9%e5%8c%96%e3%81%99%e3%82%8b-%e5%95%8f%e9%a1%8c%e3%81%ae%e3%83%92%e3%83%b3%e3%83%88-%e3%83%8f\/\">MySQL\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/a> \u6709\u76ca\u306a\u793a\u5506\u3002\u91cd\u8981\u306a\u306e\u306f\u3001\u76f2\u76ee\u7684\u306b\u5897\u5e45\u3057\u3066\u65ad\u7247\u5316\u3084\u30b9\u30ef\u30c3\u30d7\u306e\u30ea\u30b9\u30af\u3092\u5192\u3059\u3088\u308a\u3082\u3001\u5c11\u3057\u63a7\u3048\u3081\u306b\u8a2d\u5b9a\u3057\u3066\u6e2c\u5b9a\u3059\u308b\u307b\u3046\u304c\u826f\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/memoryfragmentation_office_4217.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>InnoDB \u306e\u8a73\u7d30\uff1a\u518d\u69cb\u7bc9\u6226\u7565\u3068\u30d7\u30fc\u30eb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9<\/h2>\n\n<p>MySQL \u3092\u5185\u90e8\u7684\u306b\u300c\u30b3\u30f3\u30d1\u30af\u30c8\u300d\u306b\u4fdd\u3064\u305f\u3081\u3001\u5b9a\u671f\u7684\u306a <strong>\u518d\u69cb\u7bc9<\/strong> \u66f8\u304d\u8fbc\u307f\u306e\u5272\u5408\u304c\u9ad8\u3044\u30c6\u30fc\u30d6\u30eb\u5411\u3051\u3002\u30bf\u30fc\u30b2\u30c3\u30c8\u3092\u7d5e\u3063\u305f OPTIMIZE TABLE\uff08\u307e\u305f\u306f ALTER \u306b\u3088\u308b\u30aa\u30f3\u30e9\u30a4\u30f3\u518d\u69cb\u7bc9\uff09\u306f\u3001\u30c7\u30fc\u30bf\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u3092\u7d71\u5408\u3057\u3001 <em>Data_free<\/em>. \u305d\u306e\u969b\u3001\u30ea\u30d3\u30eb\u30c9\u306f I\/O \u3092\u5927\u91cf\u306b\u6d88\u8cbb\u3059\u308b\u305f\u3081\u3001\u8ca0\u8377\u306e\u4f4e\u3044\u6642\u9593\u5e2f\u3092\u9078\u629e\u3057\u307e\u3059\u3002\u30aa\u30d7\u30b7\u30e7\u30f3 <em>innodb_file_per_table<\/em> \u30c6\u30fc\u30d6\u30eb\u5358\u4f4d\u3067\u30ea\u30d3\u30eb\u30c9\u3092\u5236\u5fa1\u3067\u304d\u308b\u305f\u3081\u3001\u500b\u3005\u306e\u300c\u554f\u984c\u306e\u3042\u308b\u30d5\u30a1\u30a4\u30eb\u300d\u306b\u3088\u3063\u3066\u30c6\u30fc\u30d6\u30eb\u30b9\u30da\u30fc\u30b9\u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u304c\u65ad\u7247\u5316\u3055\u308c\u308b\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3067\u304d\u308b\u305f\u3081\u3001\u79c1\u306f\u3053\u306e\u6a5f\u80fd\u3092\u6709\u52b9\u306b\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<p>\u79c1\u306f\u8907\u6570\u5229\u7528\u3057\u3066\u3044\u307e\u3059 <strong>\u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9<\/strong> (innodb_buffer_pool_instances) \u3092\u30d7\u30fc\u30eb\u30b5\u30a4\u30ba\u3068 CPU \u30b3\u30a2\u306b\u95a2\u9023\u4ed8\u3051\u3066\u3001\u5185\u90e8\u30e9\u30c3\u30c1\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3057\u3001\u30a2\u30af\u30bb\u30b9\u3092\u5206\u6563\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u4e26\u5217\u6027\u304c\u5411\u4e0a\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u30d7\u30fc\u30eb\u5185\u306e\u5272\u308a\u5f53\u3066\u30d1\u30bf\u30fc\u30f3\u3082\u5e73\u6e96\u5316\u3055\u308c\u307e\u3059\u3002 \u3055\u3089\u306b\u3001\u30ea\u30c9\u30a5\u30ed\u30b0\u306e\u30b5\u30a4\u30ba\u3068\u30d1\u30fc\u30b8\u30b9\u30ec\u30c3\u30c9\u306e\u30a2\u30af\u30c6\u30a3\u30d3\u30c6\u30a3\u3082\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u84c4\u7a4d\u3055\u308c\u305f\u5c65\u6b74\u306f\u30e1\u30e2\u30ea\u3068 I\/O \u3092\u5360\u6709\u3057\u3001OS \u30ec\u30d9\u30eb\u3067\u306e\u65ad\u7247\u5316\u3092\u60aa\u5316\u3055\u305b\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002\u91cd\u8981\u306a\u3053\u3068\u306f\u3001\u8a2d\u5b9a\u3092\u6bb5\u968e\u7684\u306b\u5909\u66f4\u3057\u3001\u6e2c\u5b9a\u3092\u884c\u3044\u3001\u30ec\u30a4\u30c6\u30f3\u30b7\u3068\u30a8\u30e9\u30fc\u7387\u304c\u5b9f\u969b\u306b\u4f4e\u4e0b\u3057\u305f\u5834\u5408\u306b\u306e\u307f\u8a2d\u5b9a\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u3067\u3059\u3002.<\/p>\n\n<h2>\u30b9\u30ef\u30c3\u30d7\u3092\u56de\u907f\u3059\u308b\uff1a\u30ab\u30fc\u30cd\u30eb\u8a2d\u5b9a\u3068NUMA<\/h2>\n\n<p>Linux \u304c\u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30b9\u30ef\u30c3\u30d7\u3092\u958b\u59cb\u3059\u308b\u3068\u3001\u5fdc\u7b54\u6642\u9593\u304c\u9577\u304f\u306a\u308a\u307e\u3059\u3002 <strong>\u30aa\u30fc\u30c0\u30fc\u30fb\u30aa\u30d6\u30fb\u30de\u30b0\u30cb\u30c1\u30e5\u30fc\u30c9<\/strong>, RAM\u30a2\u30af\u30bb\u30b9\u304c\u9045\u3044I\/O\u306b\u306a\u308b\u304b\u3089\u3002vm.swappiness\u3092\u304b\u306a\u308a\u4e0b\u3052\u3066\u3001\u30ab\u30fc\u30cd\u30eb\u304c\u7269\u7406RAM\u3092\u9577\u304f\u4f7f\u3046\u3088\u3046\u306b\u3057\u3066\u308b\u3002\u30de\u30eb\u30c1CPU\u30db\u30b9\u30c8\u3067\u306f\u3001NUMA\u30c8\u30dd\u30ed\u30b8\u30fc\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3066\u3001\u5fc5\u8981\u306a\u3089\u30a4\u30f3\u30bf\u30fc\u30ea\u30fc\u30d6\u3092\u6709\u52b9\u306b\u3057\u3066\u3001\u30e1\u30e2\u30ea\u4f7f\u7528\u91cf\u306e\u4e0d\u5747\u4e00\u3055\u3092\u6e1b\u3089\u3057\u3066\u308b\u3002\u80cc\u666f\u3084\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306e\u5f71\u97ff\u306b\u3064\u3044\u3066\u306f\u3001\u8996\u70b9\u304c\u53c2\u8003\u306b\u306a\u308b\u3088\u3002 <a href=\"https:\/\/webhosting.de\/ja\/%e3%83%96%e3%83%ad%e3%82%b0-%e3%83%8c%e3%83%9e-%e3%82%a2%e3%83%bc%e3%82%ad%e3%83%86%e3%82%af%e3%83%81%e3%83%a3-%e3%82%b5%e3%83%bc%e3%83%90%e3%83%bc-%e3%83%91%e3%83%95%e3%82%a9%e3%83%bc%e3%83%9e\/\">NUMA\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/a>. \u3055\u3089\u306b\u3001\u30da\u30fc\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u5b89\u5168\u30de\u30fc\u30b8\u30f3\u3082\u8a08\u753b\u3057\u3066\u3044\u307e\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u67af\u6e07\u3059\u308b\u3068\u3001\u30de\u30b7\u30f3\u5168\u4f53\u306e\u65ad\u7247\u5316\u304c\u52a0\u901f\u3059\u308b\u304b\u3089\u3067\u3059\u3002.<\/p>\n\n<h2>\u900f\u660e\u306a\u5de8\u5927\u30da\u30fc\u30b8\u3001\u30aa\u30fc\u30d0\u30fc\u30b3\u30df\u30c3\u30c8\u3001\u304a\u3088\u3073\u30a2\u30ed\u30b1\u30fc\u30bf\u30fc\u306e\u9078\u629e<\/h2>\n\n<p><strong>\u900f\u660e\u306a\u5de8\u5927\u306a\u30da\u30fc\u30b8<\/strong> (THP) \u306f\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3067\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u30d4\u30fc\u30af\u3092\u5f15\u304d\u8d77\u3053\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5927\u304d\u306a\u30da\u30fc\u30b8\u306e\u7d50\u5408\/\u5206\u5272\u304c\u4e0d\u9069\u5207\u306a\u30bf\u30a4\u30df\u30f3\u30b0\u3067\u884c\u308f\u308c\u308b\u305f\u3081\u3067\u3059\u3002MySQL \u306e\u5fdc\u7b54\u304c\u9045\u3059\u304e\u308b\u5834\u5408\u306f\u3001THP \u3092\u300cmadvise\u300d\u306b\u8a2d\u5b9a\u3059\u308b\u304b\u3001\u7121\u52b9\u306b\u3057\u307e\u3059\u3002\u540c\u6642\u306b\u3001\u6b21\u306e\u70b9\u306b\u3082\u6ce8\u610f\u3057\u3066\u3044\u307e\u3059\u3002 <strong>\u30aa\u30fc\u30d0\u30fc\u30b3\u30df\u30c3\u30c8<\/strong>: vm.overcommit_memory \u306e\u8a2d\u5b9a\u304c\u5bdb\u5927\u3059\u304e\u308b\u3068\u3001\u65ad\u7247\u5316\u306b\u3088\u3063\u3066\u5927\u304d\u306a\u9023\u7d9a\u30d6\u30ed\u30c3\u30af\u304c\u5e0c\u5c11\u306b\u306a\u3063\u305f\u5834\u5408\u306b OOM \u30ad\u30eb\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u304c\u3042\u308a\u307e\u3059\u3002\u79c1\u306f\u4fdd\u5b88\u7684\u306a\u30aa\u30fc\u30d0\u30fc\u30b3\u30df\u30c3\u30c8\u8a2d\u5b9a\u3092\u597d\u307f\u3001\u30ab\u30fc\u30cd\u30eb\u30ed\u30b0\u3092\u5b9a\u671f\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3057\u3066\u30e1\u30e2\u30ea\u5727\u8feb\u306e\u5146\u5019\u304c\u306a\u3044\u304b\u78ba\u8a8d\u3057\u3066\u3044\u307e\u3059\u3002.<\/p>\n\n<p>\u306b\u3064\u3044\u3066 <strong>\u30a2\u30ed\u30b1\u30fc\u30bf\u30fc\u306e\u9078\u629e<\/strong> \u30b7\u30b9\u30c6\u30e0\u30ec\u30d9\u30eb\u3067\u306f\u3001glibc\u2011malloc\u3001jemalloc\u3001tcmalloc \u306f\u3001\u65ad\u7247\u5316\u306b\u95a2\u3057\u3066\u7570\u306a\u308b\u6319\u52d5\u3092\u793a\u3057\u307e\u3059\u3002\u79c1\u306f\u5e38\u306b\u4ee3\u66ff\u6848\u3092\u500b\u5225\u306b\u30c6\u30b9\u30c8\u3057\u3001RSS \u306e\u5c65\u6b74\u3068\u30ec\u30a4\u30c6\u30f3\u30b7\u3092\u6e2c\u5b9a\u3057\u3001\u5b9f\u969b\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3067\u30e1\u30c8\u30ea\u30af\u30b9\u304c\u5b89\u5b9a\u3057\u3066\u3044\u308b\u5834\u5408\u306b\u306e\u307f\u5909\u66f4\u3092\u9069\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u52b9\u679c\u306f\u3001\u30ef\u30fc\u30af\u30ed\u30fc\u30c9\u3001\u62e1\u5f35\u6a5f\u80fd\u306e\u7d44\u307f\u5408\u308f\u305b\u3001OS \u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u3063\u3066\u5927\u304d\u304f\u7570\u306a\u308a\u307e\u3059\u3002.<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/12\/memoryfragmentationdev3452.png\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u65ad\u7247\u5316\u3092\u8a8d\u8b58\u3059\u308b\uff1a\u6307\u6a19\u3068\u30d2\u30f3\u30c8<\/h2>\n\n<p>\u79c1\u306f\u3086\u3063\u304f\u308a\u3068\u4e0a\u6607\u3059\u308b <strong>\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3<\/strong> RAM \u3067\u306f\u3001\u8ca0\u8377\u6642\u306e 5xx \u5fdc\u7b54\u306e\u5897\u52a0\u3084\u3001\u7ba1\u7406\u8005\u30a2\u30af\u30b7\u30e7\u30f3\u306e\u9045\u5ef6\u304c\u767a\u751f\u3057\u307e\u3059\u3002PHP-FPM \u306e PM \u7d71\u8a08\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3001\u5b50\u30d7\u30ed\u30bb\u30b9\u304c\u5236\u9650\u306b\u9054\u3057\u3066\u3044\u308b\u304b\u3001\u307e\u305f\u306f\u5b58\u7d9a\u6642\u9593\u304c\u9577\u3059\u304e\u308b\u304b\u304c\u308f\u304b\u308a\u307e\u3059\u3002MySQL \u3067\u306f\u3001\u30d2\u30c3\u30c8\u7387\u3001\u30c7\u30a3\u30b9\u30af\u4e0a\u306e\u4e00\u6642\u30c6\u30fc\u30d6\u30eb\u3001\u304a\u3088\u3073\u30c6\u30fc\u30d6\u30eb\u3054\u3068\u306e Data_free \u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002 \u540c\u6642\u306b\u3001\u30ab\u30fc\u30cd\u30eb\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u5fdc\u3058\u3066\u3001\u30da\u30fc\u30b8\u30d5\u30a9\u30fc\u30eb\u30c8\u3001\u30b9\u30ef\u30c3\u30d7\u30a4\u30f3\/\u30a2\u30a6\u30c8\u3001\u30e1\u30e2\u30ea\u65ad\u7247\u5316\u30a4\u30f3\u30b8\u30b1\u30fc\u30bf\u30fc\u306a\u3069\u306e OS \u30e1\u30c8\u30ea\u30af\u30b9\u3082\u5f79\u7acb\u3061\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u30b7\u30b0\u30ca\u30eb\u3092\u7d71\u5408\u3059\u308b\u3053\u3068\u3067\u3001\u30d1\u30bf\u30fc\u30f3\u3092\u65e9\u671f\u306b\u8a8d\u8b58\u3057\u3001\u5bfe\u7b56\u3092\u8a08\u753b\u7684\u306b\u5b9f\u65bd\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002.<\/p>\n\n<h2>\u30e2\u30cb\u30bf\u30ea\u30f3\u30b0\u306e\u6df1\u5316\uff1a\u30b7\u30b0\u30ca\u30eb\u3092\u7d71\u5408\u3059\u308b\u65b9\u6cd5<\/h2>\n\n<p>\u79c1\u306f\u76f8\u95a2\u3055\u305b\u308b <strong>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30fb\u30e1\u30c8\u30ea\u30af\u30b9<\/strong> (p95\/p99\u30ec\u30a4\u30c6\u30f3\u30b7\u3001\u30a8\u30e9\u30fc\u7387) <strong>\u30d7\u30ed\u30bb\u30b9\u6307\u6a19<\/strong> (RSS je FPM\u2011Worker\u3001mysqld\u2011\u30e1\u30e2\u30ea) \u304a\u3088\u3073 <strong>OS\u5024<\/strong> \uff08\u30da\u30fc\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u3001\u30b9\u30e9\u30d6\u3001\u30e1\u30b8\u30e3\u30fc\u30d5\u30a9\u30fc\u30eb\u30c8\uff09\u3002PHP\u2011FPM \u3067\u306f\u3001\u30ad\u30e5\u30fc\u306e\u9577\u3055\u3001\u30a2\u30af\u30c6\u30a3\u30d6\/\u30b9\u30dd\u30fc\u30f3\u3055\u308c\u305f\u5b50\u30d7\u30ed\u30bb\u30b9\u3001\u30ef\u30fc\u30ab\u30fc\u306e\u30e9\u30a4\u30d5\u30bf\u30a4\u30e0\u306b\u3064\u3044\u3066\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002 MySQL \u3067\u306f\u3001Created_tmp_disk_tables\u3001Handler_write\/Handler_tmp_write\u3001\u304a\u3088\u3073\u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u30df\u30b9\u3092\u76e3\u8996\u3057\u3066\u3044\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30d7\u30ed\u30bb\u30b9\u30de\u30c3\u30d7 (pmap\/smaps) \u3092\u78ba\u8a8d\u3057\u3066\u3001\u591a\u304f\u306e\u5c0f\u3055\u306a\u30a2\u30ea\u30fc\u30ca\u304c\u4f5c\u6210\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3092\u8abf\u3079\u307e\u3059\u3002\u79c1\u306b\u3068\u3063\u3066\u91cd\u8981\u306a\u306e\u306f\u3001 <strong>\u30c8\u30ec\u30f3\u30c9\u5fd7\u5411<\/strong>\uff1a\u500b\u3005\u306e\u30d4\u30fc\u30af\u3067\u306f\u306a\u304f\u3001\u6570\u6642\u9593\/\u6570\u65e5\u9593\u306b\u308f\u305f\u308b\u6f38\u9032\u7684\u306a\u5909\u5316\u306b\u3088\u3063\u3066\u3001\u65ad\u7247\u5316\u304c\u771f\u306e\u8105\u5a01\u3068\u306a\u308b\u304b\u3069\u3046\u304b\u304c\u6c7a\u307e\u308a\u307e\u3059\u3002.<\/p>\n\n<h2>\u5b9f\u7528\u7684\u306a\u30eb\u30fc\u30c1\u30f3\uff1a\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3068\u30c7\u30fc\u30bf\u7ba1\u7406<\/h2>\n\n<p>\u79c1\u306f\u5b9a\u671f\u7684\u306b\u7247\u3065\u3051\u307e\u3059 <strong>\u30c7\u30fc\u30bf<\/strong> \u5bfe\u8c61\uff1a\u671f\u9650\u5207\u308c\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u3001\u53e4\u3044\u30ed\u30b0\u3001\u4e0d\u8981\u306a\u30ea\u30d3\u30b8\u30e7\u30f3\u3001\u5b64\u7acb\u3057\u305f\u30ad\u30e3\u30c3\u30b7\u30e5\u3002\u5909\u5316\u306e\u6fc0\u3057\u3044\u30c6\u30fc\u30d6\u30eb\u306b\u3064\u3044\u3066\u306f\u3001\u65ad\u7247\u5316\u3055\u308c\u305f\u30da\u30fc\u30b8\u3092\u7d71\u5408\u3059\u308b\u305f\u3081\u306b\u3001\u7279\u5b9a\u306e OPTIMIZE \u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u8a08\u753b\u3057\u3066\u3044\u307e\u3059\u3002 \u5927\u898f\u6a21\u306a\u30a4\u30f3\u30dd\u30fc\u30c8\u30b8\u30e7\u30d6\u3084 cron \u30a6\u30a7\u30fc\u30d6\u306f\u3001\u3059\u3079\u3066\u306e\u30d7\u30ed\u30bb\u30b9\u304c\u540c\u6642\u306b\u6700\u5927\u30d0\u30c3\u30d5\u30a1\u3092\u8981\u6c42\u3057\u306a\u3044\u3088\u3046\u306b\u3001\u6642\u9593\u7684\u306b\u5206\u6563\u3057\u307e\u3059\u3002\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u62e1\u5927\u3057\u3066\u3044\u308b\u5834\u5408\u306f\u3001\u30e1\u30e2\u30ea\u3092\u5927\u91cf\u306b\u6d88\u8cbb\u3059\u308b\u30d1\u30bf\u30fc\u30f3\u3092\u5206\u96e2\u3059\u308b\u305f\u3081\u306b\u3001\u65e9\u3044\u6bb5\u968e\u3067 Web \u3068 DB \u3092\u5206\u96e2\u3057\u307e\u3059\u3002\u3053\u306e\u898f\u5f8b\u306b\u3088\u308a\u3001\u30e1\u30e2\u30ea\u306e\u6574\u5408\u6027\u304c\u7dad\u6301\u3055\u308c\u3001\u30d0\u30fc\u30b9\u30c8\u30ec\u30a4\u30c6\u30f3\u30b7\u306e\u30ea\u30b9\u30af\u304c\u8efd\u6e1b\u3055\u308c\u307e\u3059\u3002.<\/p>\n\n<h2>\u30b5\u30a4\u30ba\u3092\u6b63\u78ba\u306b\u8a08\u7b97\u3059\u308b\uff1a\u5236\u9650\u3068\u30d7\u30fc\u30eb\u3092\u8a2d\u8a08\u3059\u308b<\/h2>\n\n<p>\u5b9f\u969b\u306b\u5229\u7528\u53ef\u80fd\u306a PHP \u7528 RAM \u306b\u57fa\u3065\u3044\u3066 pm.max_children \u3092\u6c7a\u5b9a\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u306b\u306f\u3001 <strong>\u5e73\u5747RSS<\/strong> \u5b9f\u969b\u306e\u8ca0\u8377\uff08\u62e1\u5f35\u6a5f\u80fd\u3068 OPcache \u3092\u542b\u3080\uff09\u3067\u306e\u30ef\u30fc\u30ab\u30fc\u306e 1 \u3064\u3092\u8a08\u7b97\u3057\u3001\u30d4\u30fc\u30af\u6642\u306e\u5b89\u5168\u30de\u30fc\u30b8\u30f3\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u4f8b\uff1a16 GB \u306e\u30db\u30b9\u30c8\u3067\u306f\u3001OS\u3001\u30da\u30fc\u30b8\u30ad\u30e3\u30c3\u30b7\u30e5\u3001MySQL \u306b 4\uff5e6 GB \u3092\u4e88\u7d04\u3057\u307e\u3059\u3002PHP \u306b 10 GB \u304c\u6b8b\u308a\u3001\u30ef\u30fc\u30ab\u30fc\u3042\u305f\u308a 150 MB \u3067\u3042\u308c\u3070\u3001\u7406\u8ad6\u7684\u306b\u306f 66 \u306e\u5b50\u30d7\u30ed\u30bb\u30b9\u306b\u306a\u308a\u307e\u3059\u3002 \u5b9f\u969b\u306b\u306f\u3001\u30d4\u30fc\u30af\u6642\u306e\u4f59\u88d5\u3092\u6b8b\u3059\u305f\u3081\u3001\u3053\u306e\u5024\u306e 80\uff5e90% \u7a0b\u5ea6\u3001\u3064\u307e\u308a 52\uff5e58 \u7a0b\u5ea6\u3092 pm.max_children \u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002. <strong>pm.max_requests<\/strong> \u79c1\u306f\u3001\u30ef\u30fc\u30ab\u30fc\u304c\u9855\u8457\u306a\u65ad\u7247\u5316\u306b\u9665\u308b\u524d\u306b\u30ea\u30b5\u30a4\u30af\u30eb\u3055\u308c\u308b\u3088\u3046\u306b\u9078\u629e\u3057\u307e\u3059\uff08\u30b3\u30fc\u30c9\u306e\u7d44\u307f\u5408\u308f\u305b\u306b\u3082\u3088\u308a\u307e\u3059\u304c\u3001\u591a\u304f\u306e\u5834\u5408 500\uff5e2,000 \u306e\u7bc4\u56f2\u3067\u3059\uff09\u3002. <\/p>\n\n<p>MySQL \u3067\u306f\u3001\u79c1\u306f <strong>\u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb<\/strong> \u30a2\u30af\u30c6\u30a3\u30d6\u306a\u30c7\u30fc\u30bf\u30b5\u30a4\u30ba\u304b\u3089\u3001DB\u5168\u4f53\u306e\u30b5\u30a4\u30ba\u304b\u3089\u3058\u3083\u306a\u3044\u3088\u3002 \u91cd\u8981\u306a\u30c6\u30fc\u30d6\u30eb\u3084\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306f\u53ce\u307e\u308b\u3079\u304d\u3067\u3059\u304c\u3001OS\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u306f\u3001\u30d0\u30a4\u30ca\u30ea\u30ed\u30b0\u3001\u30bd\u30b1\u30c3\u30c8\u3001\u9759\u7684\u30a2\u30bb\u30c3\u30c8\u306e\u305f\u3081\u306e\u7a7a\u304d\u5bb9\u91cf\u304c\u5fc5\u8981\u3067\u3059\u3002\u63a5\u7d9a\u30d0\u30c3\u30d5\u30a1\u306b\u3064\u3044\u3066\u306f\u3001\u73fe\u5b9f\u7684\u306a\u6700\u5927\u4e26\u5217\u6027\u3092\u8003\u616e\u3057\u3066\u8a08\u7b97\u3057\u307e\u3059\u3002200 \u306e\u63a5\u7d9a\u304c\u53ef\u80fd\u306a\u5834\u5408\u3001\u63a5\u7d9a\u3054\u3068\u306b\u5408\u8a08\u3067\u6570\u30ae\u30ac\u30d0\u30a4\u30c8\u3082\u306e\u5bb9\u91cf\u304c\u7206\u767a\u7684\u306b\u5897\u52a0\u3059\u308b\u3088\u3046\u306a\u30b5\u30a4\u30ba\u8a2d\u5b9a\u306f\u305b\u305a\u3001\u30d4\u30fc\u30af\u6642\u3067\u3082\u30b9\u30ef\u30c3\u30d7\u306e\u5371\u967a\u6027\u304c\u306a\u3044\u3088\u3046\u306a\u53b3\u3057\u3044\u5236\u9650\u3092\u8a2d\u5b9a\u3057\u307e\u3059\u3002.<\/p>\n\n<h2>\u30ad\u30e5\u30fc\u3001\u753b\u50cf\u51e6\u7406\u3001\u304a\u3088\u3073\u30b5\u30d6\u30b8\u30e7\u30d6\u306e\u5206\u96e2<\/h2>\n\n<p>\u591a\u304f\u306e\u65ad\u7247\u5316\u306e\u554f\u984c\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u5834\u5408\u306b\u767a\u751f\u3057\u307e\u3059\u3002 <strong>\u30a2\u30eb\u30d0\u30a4\u30c8<\/strong> \u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u30ea\u30af\u30a8\u30b9\u30c8\u3068\u540c\u3058\u30d7\u30fc\u30eb\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u30a8\u30af\u30b9\u30dd\u30fc\u30c8\u3001\u30af\u30ed\u30fc\u30eb\u3001\u753b\u50cf\u5909\u63db\u3001\u691c\u7d22\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u66f4\u65b0\u306b\u306f\u3001\u660e\u78ba\u306a FPM \u30d7\u30fc\u30eb\u307e\u305f\u306f CLI \u30b8\u30e7\u30d6\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002 <em>\u30ea\u30df\u30c3\u30c8<\/em>GD\/Imagick 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<strong>\u30e1\u30e2\u30ea\u5236\u9650<\/strong> 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