{"id":213,"date":"2014-03-23T15:21:21","date_gmt":"2014-03-23T06:21:21","guid":{"rendered":"http:\/\/tech.akat.info\/?p=213"},"modified":"2014-09-16T01:13:28","modified_gmt":"2014-09-15T16:13:28","slug":"%e3%80%90mysql%e3%80%91%e3%83%81%e3%83%a5%e3%83%bc%e3%83%8b%e3%83%b3%e3%82%b0","status":"publish","type":"post","link":"https:\/\/tech.akat.info\/?p=213","title":{"rendered":"\u3010MySQL\u3011\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u30c1\u30e5\u30fc\u30cb\u30f3\u30b0\u6982\u8981"},"content":{"rendered":"<h2>\u6982\u8981<\/h2>\n<p>\u4ee5\u4e0b\u8cc7\u6599\u3092\u307e\u3068\u3081\u305f\u3001\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059Oracle\u69d8<br \/>\nhttp:\/\/www.oracle.com\/technetwork\/jp\/ondemand\/database\/mysql\/mysql-perftun-1484759-ja.pdf<\/p>\n<p>\u30ec\u30b9\u30dd\u30f3\u30b9\u30bf\u30a4\u30e0\u3092\u9ad8\u901f\u5316\u3059\u308b\u305f\u3081\u306b\u3001[\u30ad\u30e5\u30fc\u30a4\u30f3\u30b0\u5f85\u3061\u6642\u9593(mysql\u306f\u5b9f\u884c\u524d\u306b\u30ad\u30e5\u30fc\u306b\u5165\u308b) + \u5b9f\u884c\u6642\u9593] \u3092\u77ed\u7e2e\u3059\u308b<br \/>\n\u305d\u306e\u305f\u3081\u306b\u4ed5\u7d44\u307f\u3092\u77e5\u308b\u3079\u3057<\/p>\n<h2>\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3<\/h2>\n<p>mysqld\u30d7\u30ed\u30bb\u30b9\u304c\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u3089\u306e\u63a5\u7d9a\u3092\u53d7\u3051\u4ed8\u3051\u308b\u3068\u3001\u30b9\u30ec\u30c3\u30c9\u3092\u751f\u6210\u3059\u308b<br \/>\n\u305d\u306e\u5f8c\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b9\u30ec\u30c3\u30c9\u304c1\u5bfe1\u3067\u901a\u4fe1\u3057\u3001SQL\u69cb\u6587\u306e\u89e3\u6790\u3084\u5b9f\u884c\u8a08\u753b\u306e\u4f5c\u6210\u3001\u5b9f\u884c\u306a\u3069\u306e\u51e6\u7406\u3092\u5b9f\u65bd\u3059\u308b<br \/>\n<a href=\"http:\/\/tech.akat.info\/wp-content\/uploads\/2014\/03\/2014-07-22_221259.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/tech.akat.info\/wp-content\/uploads\/2014\/03\/2014-07-22_221259.png\" alt=\"2014-07-22_221259\" width=\"1028\" height=\"675\" class=\"alignnone size-full wp-image-725\" \/><\/a><\/p>\n<ul>\n<li>\u30ec\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30b9\u30ec\u30fc\u30d6\u306f\u30de\u30b9\u30bf\u3068\u540c\u7b49\u4ee5\u4e0a\u306e\u30b9\u30da\u30c3\u30af\u306b<\/li>\n<li>\u3088\u308a\u591a\u304f\u306eCPU\u30b3\u30a2\u3092\u5272\u308a\u5f53\u3066\u308b (\u7279\u306b5.5\u4ee5\u964d)<\/li>\n<\/ul>\n<h2>\u7a3c\u50cd\u72b6\u6cc1\u78ba\u8a8d<\/h2>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nroot@hostname:\/home\/shimizu# mysqladmin -uroot -ppasswore status\r\nUptime: 874  Threads: 2  Questions: 871  Slow queries: 0  Opens: 76  Flush tables: 2  Open tables: 49  Queries per second avg: 0.996\r\nroot@hostname:\/home\/shimizu# mysqladmin -uroot -ppasswore extended-status\r\n\r\nroot@hostname:\/home\/shimizu# mysqladmin -uroot -ppasswore \r\nmysql&gt; show session variables;\r\n\u2026\u7565 # \u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308b\u30bb\u30c3\u30b7\u30e7\u30f3\u8a2d\u5b9a\u3092\u78ba\u8a8d\u3059\u308b\r\n\r\nmysql&gt; show session status;\r\n\u2026\u7565 # \u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u7d71\u8a08\u60c5\u5831\u3092\u8868\u793a\u3059\u308b\r\n\r\n<\/pre>\n<p>mysqladmin status\u306e\u5185\u5bb9<br \/>\n<a href=\"http:\/\/tech.akat.info\/wp-content\/uploads\/2014\/03\/2014-07-23_002307.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/tech.akat.info\/wp-content\/uploads\/2014\/03\/2014-07-23_002307.png\" alt=\"2014-07-23_002307\" width=\"652\" height=\"332\" class=\"alignnone size-full wp-image-734\" \/><\/a><\/p>\n<h2>Connection Thread Pool<\/h2>\n<p>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u304b\u30891\u3064\u306e\u63a5\u7d9a\u304c\u78ba\u7acb\u3055\u308c\u308b\u3068\u30011\u3064\u306e\u30b9\u30ec\u30c3\u30c9\u3092\u5272\u308a\u5f53\u3066\u308b<br \/>\n\u307e\u305f\u30bb\u30c3\u30b7\u30e7\u30f3\u6bce\u306b\u3055\u307e\u3056\u307e\u306a\u60c5\u5831\u3092\u4fdd\u6301\u3057\u3066\u3044\u308b<\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nmysql&gt; show status like 'max%';\r\n+----------------------+-------+\r\n| Variable_name        | Value |\r\n+----------------------+-------+\r\n| Max_used_connections | 2     | # \u540c\u6642\u306b\u884c\u308f\u308c\u305f\u540c\u6642\u63a5\u7d9a\u306e\u30d4\u30fc\u30af\u5024\r\n+----------------------+-------+\r\n1 row in set (0.01 sec)\r\n\r\nmysql&gt; show status like 'threads%';\r\n+-------------------+-------+\r\n| Variable_name     | Value |\r\n+-------------------+-------+\r\n| Threads_cached    | 1     | # \u30b9\u30ec\u30c3\u30c9\u30ad\u30e3\u30c3\u30b7\u30e5\u5185\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u3055\u308c\u305f\u30b9\u30ec\u30c3\u30c9\u6570\r\n| Threads_connected | 1     | # \u73fe\u5728\u63a5\u7d9a\u4e2d\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u6570\r\n| Threads_created   | 2     | # \u8d77\u52d5\u3057\u3066\u304b\u3089\u73fe\u5728\u307e\u3067\u306b\u4f5c\u6210\u3055\u308c\u305f\u30b9\u30ec\u30c3\u30c9\u6570\r\n| Threads_running   | 1     | \r\n+-------------------+-------+\r\n4 rows in set (0.01 sec)\r\n\r\nmysql&gt; show variables like 'thread_cache%';\r\n+-------------------+-------+\r\n| Variable_name     | Value |\r\n+-------------------+-------+\r\n| thread_cache_size | 128   |\r\n+-------------------+-------+\r\n1 row in set (0.00 sec)\r\n\r\n<\/pre>\n<p>max_connections\uff1a\u30b5\u30fc\u30d0\u304c\u8a31\u5bb9\u3067\u304d\u308b\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u6570\u3002\u591a\u3059\u304e\u308b\u3068\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb\u3057\u304d\u308b\u53ef\u80fd\u6027\u3042\u308a<br \/>\n\u307e\u305f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c81\u3064\u306b\u3064\u304d1\u3064\u306e\u30d5\u30a1\u30a4\u30eb\u30c7\u30a3\u30b9\u30af\u30ea\u30d7\u30bf\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u6ce8\u610f<br \/>\nthread_cache_size\uff1a\u30b9\u30ec\u30c3\u30c9\u3092\u30b3\u30cd\u30af\u30b7\u30e7\u30f3\u306e\u5207\u65ad\u5f8c\u306b\u3082\u30ad\u30e3\u30c3\u30b7\u30e5\u3057\u3066\u304a\u304f\u6570(max_connections\/3)<\/p>\n<h1>\u30b9\u30ec\u30c3\u30c9\u306e\u30e1\u30e2\u30ea\u9818\u57df\u306b\u3064\u3044\u3066<\/h1>\n<h2>sort_buffer_size<\/h2>\n<pre class=\"brush: plain; title: \u73fe\u72b6\u78ba\u8a8d; notranslate\" title=\"\u73fe\u72b6\u78ba\u8a8d\">\r\n\r\nmysql&gt; show status like 'sort_merge%';\r\n+-------------------+-------+\r\n| Variable_name     | Value |\r\n+-------------------+-------+\r\n| Sort_merge_passes | 0     | # \u30bd\u30fc\u30c8\u51e6\u7406\u306b\u304a\u3044\u3066\u30c6\u30f3\u30dd\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb\u4e0a\u3067\u30bd\u30fc\u30c8\u3055\u308c\u305f\u884c\u306e\u7d50\u679c\u3092\u30de\u30fc\u30b8\u3057\u305f\u56de\u6570\r\n+-------------------+-------+\r\n1 row in set (0.00 sec)\r\n<\/pre>\n<p>sort_buffer_size\uff1a\u30bd\u30fc\u30c8\u7528\u306e\u30e1\u30e2\u30ea\u306e\u30b5\u30a4\u30ba\u3002\u30e1\u30e2\u30ea\u306b\u53ce\u307e\u3089\u306a\u3044\u5834\u5408\u306f\u30c6\u30f3\u30dd\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb\u3092\u5229\u7528\u3057\u3066\u5b9f\u884c\u3059\u308b<\/p>\n<p>temporary table (\u4e00\u6642\u30c6\u30fc\u30d6\u30eb)<br \/>\n\u4e00\u6642\u30c6\u30fc\u30d6\u30eb\u306fgroup by \u3084\u8907\u96d1\u306ajoin\u306a\u3069\u3092\u3059\u308b\u6642\u306b\u4e00\u6642\u7684\u306bMySQL\u304c\u4f5c\u308b\u30c6\u30fc\u30d6\u30eb\u3002<br \/>\n\u57fa\u672c\u306fMEMORY\u30b9\u30c8\u30ec\u30fc\u30b8\u30a8\u30f3\u30b8\u30f3\u3067\u4f5c\u6210\u3055\u308c\u308b\u306e\u3067\u30aa\u30f3\u30e1\u30e2\u30ea\u3002\u305f\u3060\u3057\u8a2d\u5b9a\u5024\u4ee5\u4e0a\u306b\u306a\u308b\u3068MyISAM\u3067\u4f5c\u308b<br \/>\ntmp_table_size = 128M<br \/>\nmax_heap_table_size = 128M<\/p>\n<p>tmp file(\u30c6\u30f3\u30dd\u30e9\u30ea\u30d5\u30a1\u30a4\u30eb)<br \/>\n\u3053\u3061\u3089\u306f\u30bd\u30fc\u30c8\u3067\u4f7f\u3046\u30d5\u30a1\u30a4\u30eb\u3002order by \u3068group by\u3067\u5b9f\u969b\u306b\u30bd\u30fc\u30c8\u3059\u308b\u3068\u304d\u306b\u4f7f\u308f\u308c\u307e\u3059\u3002\u3053\u3061\u3089\u306fsort_buffer_size \u306b\u53ce\u307e\u308a\u304d\u3089\u306a\u3044\u5834\u5408\u306btmp\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u4e0a\u306b\u3067\u304d\u308b<\/p>\n<h2>read_buffer_size<\/h2>\n<p>\u5168\u4ef6\u691c\u7d22\u306b\u4f7f\u7528\u3055\u308c\u308b\u30e1\u30e2\u30ea\u91cf\u3001index\u306e\u5229\u7528\u306e\u6709\u7121\u306f\u95a2\u4fc2\u306a\u3044<\/p>\n<h2>join_buffer_size<\/h2>\n<p>\u30d5\u30eb\u30b8\u30e7\u30a4\u30f3(\u5168\u4ef6\u691c\u7d22\u3092\u4f34\u3046\u30c6\u30fc\u30d6\u30eb\u306e\u7d50\u5408)\u3067\u306e\u3001\u30ec\u30b3\u30fc\u30c9\u30c7\u30fc\u30bf\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u306b\u5229\u7528\u3055\u308c\u308b<br \/>\n1\u56de\u306e\u30d5\u30eb\u30b8\u30e7\u30a4\u30f3\u306b\u3064\u304d\u30011\u3064\u306e\u30b8\u30e7\u30a4\u30f3\u30d0\u30c3\u30d5\u30a1\u304c\u78ba\u4fdd\u3055\u308c\u3001SQL\u306e\u5b9f\u884c\u7d42\u4e86\u3068\u3068\u3082\u306b\u89e3\u653e\u3055\u308c\u308b<\/p>\n<h2><\/h2>\n<h2>Query Cache<\/h2>\n<p>mysql\u3067\u306fSELECT\u6587\u3092key\u3001\u7d50\u679c\u3092value\u3068\u3057\u3066\u30e1\u30e2\u30ea\u306b\u4fdd\u5b58\u3059\u308b<br \/>\n(SELECT\u6587\u3092\u30cf\u30c3\u30b7\u30e5\u5316\u3057\u3066key\u3068\u3059\u308b\u305f\u3081\u3001\u5c0f\u6587\u5b57\u3084\u5927\u6587\u5b57\u307e\u3067\u5168\u304f\u540c\u3058\u3067\u306a\u3044\u3068\u540c\u3058\u3068\u8a8d\u8b58\u3055\u308c\u306a\u3044)<br \/>\n\u305f\u3060\u3057SELECT\u3092\u5b9f\u884c\u3059\u308b\u30c6\u30fc\u30d6\u30eb\u304c\u66f4\u65b0\u3055\u308c\u305f\u5834\u5408\u306f\u3001\u305d\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30a8\u30f3\u30c8\u30ea\u306f\u7121\u52b9\u3068\u306a\u308b<\/p>\n<pre class=\"brush: plain; title: \u73fe\u72b6\u78ba\u8a8d; notranslate\" title=\"\u73fe\u72b6\u78ba\u8a8d\">\r\nmysql&gt; show variables like 'query_cache_%';\r\n+------------------------------+----------+\r\n| Variable_name                | Value    |\r\n+------------------------------+----------+\r\n| query_cache_limit            | 1048576  |\r\n| query_cache_min_res_unit     | 4096     |\r\n| query_cache_size             | 16777216 | # \u30af\u30a8\u30ea\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u30b5\u30a4\u30ba\r\n| query_cache_type             | ON       | # Query Cache\u3092\u8a31\u53ef\u3059\u308b\u304b\u3069\u3046\u304b(&quot;2&quot;\u3082\u6307\u5b9a\u3067\u304d\u3001\u305d\u306e\u3068\u304d\u306f\u660e\u793a\u7684\u306bSQL\u6587\u306bSQL_CACHE\u53e5\u3092\u8a18\u8f09\u3059\u308b)\u3000\u66f4\u65b0\u51e6\u7406\u304c\u591a\u3044\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30aa\u30fc\u30d0\u30d8\u30c3\u30c9\u6700\u60aa15%\r\n| query_cache_wlock_invalidate | OFF      |\r\n+------------------------------+----------+\r\n5 rows in set (0.00 sec)\r\n\r\nmysql&gt; show status like 'Qcache_%'; # \u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u306e\u7d71\u8a08\u60c5\u5831\r\n+-------------------------+----------+\r\n| Variable_name           | Value    |\r\n+-------------------------+----------+\r\n| Qcache_free_blocks      | 20       |\r\n| Qcache_free_memory      | 66782352 |\r\n| Qcache_hits             | 250244   | # \u30ad\u30e3\u30c3\u30b7\u30e5\u30d2\u30c3\u30c8 \u3053\u306e\u5024\u306b\u3088\u3063\u3066\u306fQueryCache\u3092\u7121\u52b9\u306b\u3057\u3066\u3082\u3088\u3057\r\n| Qcache_inserts          | 181634   | # \u767b\u9332\u4ef6\u6570\r\n| Qcache_lowmem_prunes    | 0        | # \u30e1\u30e2\u30ea\u4e0d\u8db3\u306e\u305f\u3081\u306b\u30ad\u30e3\u30c3\u30b7\u30e5\u304c\u524a\u9664\u3055\u308c\u305f\u56de\u6570\r\n| Qcache_not_cached       | 33511    |\r\n| Qcache_queries_in_cache | 82       |\r\n| Qcache_total_blocks     | 196      |\r\n+-------------------------+----------+\r\n8 rows in set (0.00 sec)\r\n<\/pre>\n<p>\u30d2\u30c3\u30c8\u7387\u306f\u3001Qcache_hits \/ ( Qcache_hits + Qcache_inserts + Qcache_not_cached ) \u3067\u7b97\u51fa\u53ef\u80fd<br \/>\n\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5229\u7528\u3057\u306a\u3044\u5834\u5408\u306eSELECT\u6587\u306f\u3001\u30af\u30a8\u30ea\u30ad\u30e3\u30c3\u30b7\u30e5\u7121\u52b9\u306e\u5834\u5408\u306eSELECT\u3068\u6bd4\u8f03\u3057\u3066\u3001<br \/>\n\u30ad\u30e3\u30c3\u30b7\u30e5\u3078\u306e\u767b\u9332\u306a\u3069\u304c\u5fc5\u8981\u3068\u306a\u308b\u305f\u3081\u3001\u7d041-2\u5272\u306e\u30aa\u30fc\u30d0\u30d8\u30c3\u30c9\u304c\u767a\u751f\u3059\u308b<\/p>\n<h2>\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u30a8\u30f3\u30b8\u30f3-InnoDB-<\/h2>\n<p><a href=\"http:\/\/tech.akat.info\/wp-content\/uploads\/2014\/03\/2014-07-22_224228.png\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/tech.akat.info\/wp-content\/uploads\/2014\/03\/2014-07-22_224228.png\" alt=\"2014-07-22_224228\" width=\"1044\" height=\"694\" class=\"alignnone size-full wp-image-729\" \/><\/a><\/p>\n<pre class=\"brush: plain; title: ; notranslate\" title=\"\">\r\nmysql&gt; show variables like 'innodb_%'; # \u7d50\u679c\u306f\u4e2d\u7565\u3001\u9806\u4e0d\u540c\r\n+-------------------------------------------+------------------------+\r\n| Variable_name                             | Value                  |\r\n+-------------------------------------------+------------------------+\r\n| innodb_buffer_pool_size                   | 268435456              | # \u30c7\u30fc\u30bf\u3068\u30a4\u30f3\u30c7\u30c3\u30af\u30b9\u306e\u4e21\u65b9\u3092\u30ad\u30e3\u30c3\u30b7\u30e5\u3002InnoDB\u306f\u30d0\u30c3\u30d5\u30a1\u30d7\u30fc\u30eb\u306e\u30b5\u30a4\u30ba\u306b\u6bd4\u4f8b\u3057\u3066\u30e1\u30e2\u30ea\u3092\u6d88\u8cbb(5-10%)\u3059\u308b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u304c\u3042\u308b\u305f\u3081\u6ce8\u610f\r\n| innodb_log_file_size                      | 5242880                | # innodb_buffer_pool_size\u306e25%\u301c100%\r\n| innodb_flush_log_at_trx_commit            | 1                      | # 1:\u30b3\u30df\u30c3\u30c8\u6642\u306b\u30ed\u30b0\u3092\u30d5\u30e9\u30c3\u30b7\u30e5\u3002\u771f\u306eACID\r\n| innodb_flush_method                       | O_DIRECT               | # OS\u306e\u30ad\u30e3\u30c3\u30b7\u30e5\u3092\u5229\u7528\u3057\u306a\u3044\r\n| innodb_buffer_pool_instances              | 1                      | # \r\n| innodb_io_capacity                        | 400                    | # \u30c7\u30a3\u30b9\u30afIO\u306b\u5fdc\u3058\u3066\u5909\u66f4\u3059\u308b\u3079\u3057\u3001200\u3060\u30682\u3064\u306e\u30c7\u30a3\u30b9\u30af\u30b9\u30c8\u30e9\u30a4\u30d7\r\n| innodb_file_per_table                     | ON                     | # \u30d5\u30a1\u30a4\u30ebIO\u306e\u5206\u6563\u306b\u52b9\u679c\u3042\u308a\u30015.6\u304b\u3089\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\r\n| innodb_write_io_threads                   | 4                      | # \u30c7\u30a3\u30b9\u30afIO\u306b\u5fdc\u3058\u3066\u5909\u66f4\u3059\u308b\u3079\u3057\u30014\u304f\u3089\u3044\u304c\u3088\u3044\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\r\n+-------------------------------------------+------------------------+\r\n100 rows in set (0.00 sec)\r\n\r\nmysql&gt; SHOW ENGINE INNODB STATUS\\G # \u3068\u3066\u3082\u9577\u3044\u305f\u3081\u7565\r\n*************************** 1. row ***************************\r\n\r\n\r\n# Handler \u3068\u3044\u3046\u306e\u306f MySQL \u306e\u30b9\u30c8\u30ec\u30fc\u30b8\u30a8\u30f3\u30b8\u30f3\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3067\u3001\r\n# \u305d\u306e\u7a2e\u985e\u3092\u898b\u308b\u3053\u3068\u3067 InnoDB \u304c\u30d5\u30a1\u30a4\u30eb I\/O \u3001\u30c7\u30a3\u30b9\u30af I\/O \u306b\u8fd1\u3044\u30ed\u30fc\u30ec\u30d9\u30eb\u3067\u3069\u3046\u3044\u3046\u4ed5\u4e8b\u3092\u3057\u3066\u3044\u308b\u306e\u304b\u898b\u308b\u3053\u3068\u304c\u308f\u304b\u308b\u3089\u3057\u3044\r\nmysql&gt; show status like '%handler%';\r\n+----------------------------+-------+\r\n| Variable_name              | Value |\r\n+----------------------------+-------+\r\n| Handler_commit             | 0     |\r\n| Handler_delete             | 0     |\r\n| Handler_discover           | 0     |\r\n| Handler_icp_attempts       | 0     |\r\n| Handler_icp_match          | 0     |\r\n| Handler_mrr_init           | 0     |\r\n| Handler_mrr_key_refills    | 0     |\r\n| Handler_mrr_rowid_refills  | 0     |\r\n| Handler_prepare            | 0     |\r\n| Handler_read_first         | 0     |\r\n| Handler_read_key           | 0     |\r\n| Handler_read_last          | 0     |\r\n| Handler_read_next          | 0     |\r\n| Handler_read_prev          | 0     |\r\n| Handler_read_rnd           | 0     |\r\n| Handler_read_rnd_deleted   | 0     |\r\n| Handler_read_rnd_next      | 0     |\r\n| Handler_rollback           | 0     |\r\n| Handler_savepoint          | 0     |\r\n| Handler_savepoint_rollback | 0     |\r\n| Handler_tmp_update         | 0     |\r\n| Handler_tmp_write          | 0     |\r\n| Handler_update             | 0     |\r\n| Handler_write              | 0     |\r\n+----------------------------+-------+\r\n24 rows in set (0.00 sec)\r\n<\/pre>\n<h2><\/h2>\n<h2><\/h2>\n<h2>\u53c2\u8003<\/h2>\n<p>http:\/\/www.oracle.com\/technetwork\/jp\/ondemand\/database\/mysql\/mysql-perftun-1484759-ja.pdf<\/p>\n<p>\u6700\u5f8c\u306b\u8aad\u3080<br \/>\nhttp:\/\/www.atmarkit.co.jp\/ait\/articles\/0107\/24\/news001.html<\/p>\n<p>http:\/\/d.hatena.ne.jp\/fixers\/20121227\/1356570495<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6982\u8981 \u4ee5\u4e0b\u8cc7\u6599\u3092\u307e\u3068\u3081\u305f\u3001\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3059Oracle\u69d8 http:\/\/www.oracle.com\/technetwork\/jp\/ondemand\/database\/mysql\/mysql-perftun-1484 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[14],"tags":[],"_links":{"self":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts\/213"}],"collection":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=213"}],"version-history":[{"count":26,"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts\/213\/revisions"}],"predecessor-version":[{"id":827,"href":"https:\/\/tech.akat.info\/index.php?rest_route=\/wp\/v2\/posts\/213\/revisions\/827"}],"wp:attachment":[{"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=213"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=213"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tech.akat.info\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=213"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}