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2015年7月13日

Maximum number of WAL files in the pg_xlog directory (2)

摘要: Jeff Janes:Hi,As part of our monitoring work for our customers, we stumbled upon an issue with our customers' servers who have a wal_keep_segments set... 阅读全文

posted @ 2015-07-13 00:08 Still water run deep 阅读(492) 评论(0) 推荐(0) 编辑

2015年7月12日

Maximum number of WAL files in the pg_xlog directory (1)

摘要: Guillaume Lelarge:Hi,As part of our monitoring work for our customers, we stumbled upon an issue with our customers' servers who have a wal_keep_segme... 阅读全文

posted @ 2015-07-12 23:29 Still water run deep 阅读(644) 评论(0) 推荐(0) 编辑

2015年1月6日

Goal driven performance optimization

摘要: When your goal is to optimize application performance it is very important to understand what goal do you really have. If you do not have a good under... 阅读全文

posted @ 2015-01-06 01:42 Still water run deep 阅读(389) 评论(0) 推荐(0) 编辑

2015年1月5日

Using SHOW PROCESSLIST and mysqladmin debug Output in Conjunction with SHOW INNODB STATUS

摘要: When InnoDB appears hung, I know the natural reaction is to check SHOW ENGINE INNODB STATUS.In fact, it’s the first thing I check when InnoDB tables a... 阅读全文

posted @ 2015-01-05 00:58 Still water run deep 阅读(303) 评论(0) 推荐(0) 编辑

Concurrent inserts on MyISAM and the binary log

摘要: Recently I had an interesting surprise with concurrent inserts into a MyISAM table. The inserts were not happening concurrently with SELECT statements... 阅读全文

posted @ 2015-01-05 00:56 Still water run deep 阅读(268) 评论(0) 推荐(0) 编辑

2014年12月12日

A better SHOW TABLE STATUS

摘要: From command line we have the entire MySQL server on hands (if we have privileges too of course) but we don’t have a overall overview, at this point t... 阅读全文

posted @ 2014-12-12 03:03 Still water run deep 阅读(278) 评论(0) 推荐(0) 编辑

show table status

摘要: SHOW TABLE STATUSworks likesSHOW TABLES, but provides a lot of information about each non-TEMPORARYtable. You can also get this list using themysqlsho... 阅读全文

posted @ 2014-12-12 02:59 Still water run deep 阅读(415) 评论(0) 推荐(0) 编辑

2014年12月8日

A Flock Of Tasty Sources On How To Start Learning High Scalability

摘要: This is aguest repostbyLeandro Moreira.When we usually are interested about scalability we look for links, explanations, books, and references. This m... 阅读全文

posted @ 2014-12-08 21:44 Still water run deep 阅读(338) 评论(0) 推荐(0) 编辑

PostgreSQL Hardware Performance Tuning

摘要: Bruce MomjianPOSTGRESQL is an object-relational database developed on the Internet by a group of developers spread across the globe. It is an open-sou... 阅读全文

posted @ 2014-12-08 18:53 Still water run deep 阅读(330) 评论(0) 推荐(0) 编辑

Choosing proper innodb_log_file_size

摘要: If you’re doing significant amount of writes to Innodb tables decent size ofinnodb_log_file_sizeis important for MySQL Performance. However setting it... 阅读全文

posted @ 2014-12-08 02:13 Still water run deep 阅读(269) 评论(0) 推荐(0) 编辑

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