Date: Thu, 22 Nov 2007 22:51:23 +0100 From: Kris Kennaway <kris@FreeBSD.org> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-stable@freebsd.org Subject: Re: 2 x quad-core system is slower that 2 x dual core on FreeBSD Message-ID: <4745F9DB.7040701@FreeBSD.org> In-Reply-To: <9bbcef730711221342y5223f0cfuca1826c8f203e9b8@mail.gmail.com> References: <4741905E.8050300@chistydom.ru> <4743629B.9090408@FreeBSD.org> <fi11k8$5ak$1@ger.gmane.org> <47440C10.5060608@FreeBSD.org> <fi12dg$7u7$1@ger.gmane.org> <47440E55.3060909@FreeBSD.org> <9bbcef730711210320s73c0625bh25ba2561b270f237@mail.gmail.com> <47448CC2.7030100@FreeBSD.org> <fi43da$kc8$1@ger.gmane.org> <4745ED27.6060401@FreeBSD.org> <9bbcef730711221342y5223f0cfuca1826c8f203e9b8@mail.gmail.com>
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Ivan Voras wrote: > On 22/11/2007, Kris Kennaway <kris@freebsd.org> wrote: >> Ivan Voras wrote: >>> Kris Kennaway wrote: > >>>> OK, let's take a step back here. Did you obtain the lock profiling >>>> trace and verify that you're seeing the same problem as Alexey? Can I >>>> see the trace? >>> Here it is: >>> >>> http://ivoras.sharanet.org/stuff/lock_profile.txt >>> >>> This is without your patch. >>> > >>> Your reading of the lock profile will be appreciated. >> OK, how about with? > > The machine is going into production and I can't do such interventions > on it any more. Based on the lock trace, do you think It's the same > problem as Alexeys? It looks like lockmgr, and the patch should definitely have helped. Maybe you forgot to enable vfs.lookup_shared? Kris
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