Date: Fri, 15 Feb 2008 09:57:04 +0000 From: Dieter <freebsd@sopwith.solgatos.com> To: freebsd-performance@freebsd.org Subject: Re: System perforamance 4.x vs. 5.x and 6.x Message-ID: <200802151757.RAA17875@sopwith.solgatos.com> In-Reply-To: Your message of "Fri, 15 Feb 2008 09:48:03 MST." <20080215085714.K79197@mail.rsts.org>
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> > >Dell PowerEdge 1750 1U, 146Gig U320s. The Broadcoms seem to be a change > > >from the earlier 1550s with intel pro/100s (I prefer the intel's). > > > > So this is not the same hardware as before that was running releng_4 ? > > Yes, it is actually the same physical box. > this one has me baffled as the machine seems perfectly sane for 18 hours > a day and can then turn into a slug from 10am-4pm (peak user activity). Is the disk layout the same as before? Any chance that two heavily used partitions are now on the same drive? Or a heavily used partition was on the fast end of the disk and is now on the slow end? Have you ruled out a mutex problem? Differences in memory usage / disk cache / disk algorithms between 4.x and 6.x ?
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