Date: Tue, 13 Jan 2009 13:56:33 -0500 From: Ken Smith <kensmith@cse.Buffalo.EDU> To: Tomas Randa <freebsd@max.af.czu.cz> Cc: Robert Watson <rwatson@freebsd.org>, freebsd-stable@freebsd.org, Garance A Drosihn <drosih@rpi.edu> Subject: Re: Big problems with 7.1 locking up :-( Message-ID: <1231872993.16701.9.camel@bauer.cse.buffalo.edu> In-Reply-To: <496BA9AE.10801@max.af.czu.cz> References: <E1LL6dg-0007CN-DI@dilbert.ticketswitch.com> <042FE04A-2F8D-47DD-8454-7BBA3791D7A8@inoc.net> <p06240802c58db5953598@[128.113.24.47]> <alpine.BSF.2.00.0901121453200.16794@fledge.watson.org> <p06240808c5911644dd11@[128.113.24.47]> <496BA9AE.10801@max.af.czu.cz>
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On Mon, 2009-01-12 at 21:35 +0100, Tomas Randa wrote:
> I have similar problems. The last "good" kernel I have from stable=20
> brach, october the 8. Then in next upgrade, I saw big problems with=20
> performance.
> I tried ULE, 4BSD etc, but nothing helps, only downgrading system back.
>=20
> Now I am trying 7.1-p1 and problems are here again. Mysql is waiting a=20
> lot of time with status "waiting for opening table" or "waiting for=20
> close tables"
>=20
> I have 32bit FreeBSD with PAE, 1x xeon 5420, supermicro motherboard,=20
> areca SATA controller. Could not be problem in "da" device for example?
>=20
> Thanks Tomas Randa
Could you give r186860 a try? It is an MFC into stable/7 so if the
machine in question is something you can experiment with just updating
to stable/7 would take care of it. Otherwise if you could just manually
apply the patch to a 7.1 source tree and do a test build of the kernel
that would also do it.
I'm not experiencing lockups but this patch helped a lot on a machine I
have with a particular disk I/O pattern that resulted in extremely poor
performance with 7.1-RELEASE. This patch brought it back to its normal
performance level.
Thanks.
--=20
Ken Smith
- From there to here, from here to | kensmith@cse.buffalo.edu
there, funny things are everywhere. |
- Theodore Geisel |
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