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Date: Mon, 26 Feb 2007 17:36:45 -0500 From: Dave Jones <davej@...hat.com> To: Pete Harlan <harlan@...select.com> Cc: Nick Piggin <nickpiggin@...oo.com.au>, Rik van Riel <riel@...hat.com>, Lorenzo Allegrucci <l_allegrucci@...oo.it>, linux-kernel@...r.kernel.org, Ingo Molnar <mingo@...e.hu>, Suparna Bhattacharya <suparna@...ibm.com>, Jens Axboe <jens.axboe@...cle.com> Subject: Re: SMP performance degradation with sysbench On Mon, Feb 26, 2007 at 04:04:01PM -0600, Pete Harlan wrote: > On Tue, Feb 27, 2007 at 12:36:04AM +1100, Nick Piggin wrote: > > I found a couple of interesting issues so far. Firstly, the MySQL > > version that I'm using (5.0.26-Max) is making lots of calls to > > FYI, MySQL fixed some scalability problems in version 5.0.30, as > mentioned here: > > http://www.mysqlperformanceblog.com/2007/01/03/innodb-benchmarks/ > > It may be worth using more recent sources than 5.0.26 if tracking down > scaling problems in MySQL. The blog post that originated this discussion ran tests on 5.0.33 Not that the mysql version should really matter. The key point here is that FreeBSD and Linux were running the *same* version, and FreeBSD was able to handle the situation better somehow. Dave -- http://www.codemonkey.org.uk - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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