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MySQL 5.6ããå ãã£ã INFORMATION_SCHEMA.INNODB_METRICS ã®ãã¹ãã mysql56> SELECT name, subsystem, count, status FROM information_schema.innodb_metrics; +------------------------------------------+---------------------+-----------+----------+ | name | subsystem | count | status | +------------------------------------------+---------------------+-----------+----------+ | metadata_table_handles_opened | metad
After intensive testing and hack, we started using Semi-Synchronous MySQL Replication at Facebook production environments. Semi-Synchronous Replication itself was ready since MySQL 5.5 (GA was released 3.5 years ago!), but I'm pretty sure not many people have used in production so far. Here are summary of our objective, enhancements and usage patterns. If you want to hear more in depth, please fee
MySQL Performance Blogã®ç¿»è¨³ãALTER TABLEã«ãããã¼ãã«å¤æ´ã®é²æç¶æ³ã確èªããã«ã¯ãããã¤ãã®æ¹æ³ããããããããã®æ¹æ³ã¨å©ç¹ãæ¬ ç¹ãç´¹ä»ããã February 26, 2014 By Nilnandan Joshi Percona Supportã®ã¨ã³ã¸ãã¢ã¨ãã¦ç¾å¨é¢ãã£ã¦ããæ¡ä»¶ã®ä¸ã§ãALTER TABLEã®é²æç¶æ³ã確èªããæ¹æ³ã«ã¤ãã¦é¡§å®¢ããå°ãããããå®ã¯ãMySQL 5.5以åã¯ããã¼ãã«ã«å¯¾ããALTERã®å®è¡ç¶æ³ãæ¬çªç°å¢ã§ç¢ºèªããã®ã¯å°ã é£ããã(æ°ç¾ä¸è¡ããããããª)巨大ãªãã¼ãã«ã§ã¯ãªãããã ã£ããããã¯ããªãã«ãã¨ãã¼ãã«ã®ããã¯ãä¼´ããããããã©ã¼ãã³ã¹ä½ä¸ã ãã§ãªãã¦ã¼ã¶å½±é¿ããã£ãããã ãã¨ã¯ãããALTERãå§ãã¦ãã¾ãã°ãããããã¤çµããã®ããç¥ãã®ã¯ã¨ã¦ãéè¦ãªãã¨ã ãã¤ã³ããã¯ã¹ãä½æãã¦ããéãfast_ind
ãç¥ãã: CentOS 6.5 ã§ãåãæé ã§ã¤ã³ã¹ãã¼ã«ã§ãããã¨ã確èªæ¸ã¿ã§ãã CentOS ã®æ¨æºãªãã¸ããªããã¤ã³ã¹ãã¼ã«ã§ãã MySQL ã¯æªã ã« 5.1 ç³»ã§ãã 5.5 以éã®å§åçãªéããç¥ã£ã¦ããã®ã§ãä»ãã 5.1 ã¯ä½¿ãæ°ã«ãªãã¾ããã ã¨ããããã§ãCentOS 6.4 ã« RPM ããã±ã¼ã¸ããã¤ã³ã¹ãã¼ã«ããæé ã§ãã 4/29 æç¹ã®ææ°ãã¼ã¸ã§ã³ã¯ MySQL 5.6.11 ã§ãããã¼ã¸ã§ã³ã¯ãã®æã®ææ°ã«èªã¿æ¿ãã¦ãã ããã Download MySQL Community Server ã¾ã㯠RPM ãã¡ã¤ã«ããã¦ã³ãã¼ããã¾ãã wget -q http://dev.mysql.com/get/Downloads/MySQL-5.6/MySQL-client-5.6.11-1.el6.x86_64.rpm \ http://dev.mysql.
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All of Perconaâs open-source software products, in one place, to download as much or as little as you need.
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At Facebook, we have upgraded most of MySQL database tiers to 5.6, except very few tiers that have a special requirement -- very fast single threaded replication speed. As Oli mentioned, single threaded performance is worse in 5.6. The regression is actually not visible in most cases. For remote clients, the performance regression is almost negligible because network latency is longer than 5.1->5.
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