Sasha Pachev said: > Steve Meyers wrote: >> Has anyone else experienced this bug? >> >> http://bugs.mysql.com/bug.php?id=868 >> >> We've been seeing this problem on several of our servers (see the last >> comment to the bug). MySQL just hangs occasionally, it happens about >> 3-4 times per month. We have 13 database servers, so that >> unfortunately increases our odds. >> >> I just wondered how many other people have seen it, and if the >> suggested "export LD_ASSUME_KERNEL=2.2.5; mysqld_safe &" has worked >> for anyone. In order to turn that on, I will need to take our site >> down completely, which is (of course) not desirable. > > Steve: > > I have not heard much good about NPTL threads when used with MySQL at > least :-) If LD_ASSUME_KERNEL trick does not do the job, I would > recommend compiling a virgin 2.4 kernel from kernel.org and putting it > on all of your servers. That might actually be a good idea anyway even > if the trick does work. In three years of doing MySQL support I have > learned this simple formula: > > RH kernel from 7.0 and newer + MySQL + high load = highly probable > instability > > > > -- > Sasha Pachev > Create online surveys at http://www.surveyz.com/ Any particular reason to use 2.4.x vs 2.6.x from kernel for base?
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