Comments on: The new cool MySQL patch has landed! Check your queries performance! http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/ Everything about MySQL Performance Sat, 07 Nov 2009 18:35:44 -0800 http://wordpress.org/?v=2.8.4 hourly 1 By: MySQL 微秒慢查询补丁 : 网站架构研究 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-503187 MySQL 微秒慢查询补丁 : 网站架构研究 Thu, 12 Mar 2009 06:00:23 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-503187 [...] 留言 原文出自：The new cool MySQL patch has landed! Check your queries performance!，本文做只部分翻译。 [...] [...] 留言 原文出自：The new cool MySQL patch has landed! Check your queries performance!，本文做只部分翻译。 [...]

]]> By: mrazicek http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-314737 mrazicek Wed, 18 Jun 2008 10:16:18 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-314737 I need some help... How can I install this patch? Which file I have to patch? I have Debian etch many thanks I need some help… How can I install this patch? Which file I have to patch? I have Debian etch

many thanks

]]> By: Mike Muscle http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-283793 Mike Muscle Sun, 20 Apr 2008 18:18:37 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-283793 Nice implementation. Sure, I will try it out Nice implementation. Sure, I will try it out

]]> By: Pig Face Media » Blog Archive » Be careful rotating MySQL logs http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-223196 Pig Face Media » Blog Archive » Be careful rotating MySQL logs Tue, 25 Dec 2007 03:17:22 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-223196 [...] you enable logging of all queries as “slow queries” using the patch or MySQL 5.1 you can get log file to grow huge. Same may happen with general log file. In some [...] [...] you enable logging of all queries as “slow queries” using the patch or MySQL 5.1 you can get log file to grow huge. Same may happen with general log file. In some [...]

]]> By: Xaprb http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-220151 Xaprb Tue, 18 Dec 2007 16:37:21 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-220151 I found out why the slave thread stops logging. For anyone else who is having the same trouble, configure log_slow_admin_statements = 1 and that will prevent it. I'm sure a future version of the patch will fix it. I found out why the slave thread stops logging. For anyone else who is having the same trouble, configure log_slow_admin_statements = 1 and that will prevent it. I’m sure a future version of the patch will fix it.

]]> By: Xaprb http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-219667 Xaprb Mon, 17 Dec 2007 17:18:12 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-219667 Maciek, I emailed Peter about this (I don't have your email) so you may hear from him too. I altered the patch to work OK on 5.0.40 (enterprise sources, SHOW PROFILE changes makes the patch fail to apply) and built with it. I'm seeing the slave thread stop logging (though not stop executing) after a particular query. If I do a STOP SLAVE and then START SLAVE, the log starts getting written to again. Is this a known issue you are fixing with a newer version? Email me if you would like to discuss more. I can share my logs with you if you need. Thanks! Baron Maciek, I emailed Peter about this (I don’t have your email) so you may hear from him too. I altered the patch to work OK on 5.0.40 (enterprise sources, SHOW PROFILE changes makes the patch fail to apply) and built with it. I’m seeing the slave thread stop logging (though not stop executing) after a particular query. If I do a STOP SLAVE and then START SLAVE, the log starts getting written to again. Is this a known issue you are fixing with a newer version? Email me if you would like to discuss more. I can share my logs with you if you need.

Thanks!
Baron

]]> By: Maciej Dobrzanski http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-219654 Maciej Dobrzanski Mon, 17 Dec 2007 17:01:30 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-219654 Xaprb, There is a new version of the patch ready, still going through some internal testing though, which allows better control over the patch work or results. But even now you could achieve the desired result by temporarily modifying global wait_timeout value and performing SLAVE STOP and SLAVE START. This will set slave thread wait_timeout as needed (e.g. 0 - log all slave queries, 100000000 - log only extremely long running queries, which practically means none). Maciek Xaprb,

There is a new version of the patch ready, still going through some internal testing though, which allows better control over the patch work or results. But even now you could achieve the desired result by temporarily modifying global wait_timeout value and performing SLAVE STOP and SLAVE START. This will set slave thread wait_timeout as needed (e.g. 0 – log all slave queries, 100000000 – log only extremely long running queries, which practically means none).

Maciek

]]> By: Xaprb http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-219644 Xaprb Mon, 17 Dec 2007 16:31:30 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-219644 The log_slow_slave_statements parameter doesn't appear in SHOW VARIABLES. It would be nice if it appeared there and was dynamically settable. Maybe I can add that to the patch if I get time. The log_slow_slave_statements parameter doesn’t appear in SHOW VARIABLES. It would be nice if it appeared there and was dynamically settable. Maybe I can add that to the patch if I get time.

]]> By: Be careful rotating MySQL logs | MySQL Performance Blog http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-215075 Be careful rotating MySQL logs | MySQL Performance Blog Sun, 09 Dec 2007 18:40:27 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-215075 [...] you enable logging of all queries as “slow queries” using the patch or MySQL 5.1 you can get log file to grow huge. Same may happen with general log file. In some [...] [...] you enable logging of all queries as “slow queries” using the patch or MySQL 5.1 you can get log file to grow huge. Same may happen with general log file. In some [...]

]]> By: Jeffrey Gilbert http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/comment-page-1/#comment-184455 Jeffrey Gilbert Sun, 04 Nov 2007 15:29:11 +0000 http://www.mysqlperformanceblog.com/2007/10/31/new-patch-for-mysql-performance/#comment-184455 What are the chances this patch would be included in the GA 5.1 releases like the last one was I wonder? It would be a great tool to use without a patch for certain. What are the chances this patch would be included in the GA 5.1 releases like the last one was I wonder? It would be a great tool to use without a patch for certain.

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