Date: Wed, 7 May 2003 13:51:52 -0500 From: Glenn Johnson <gjohnson@srrc.ars.usda.gov> To: John Baldwin <jhb@FreeBSD.org> Cc: Doug Barton <DougB@FreeBSD.org> Subject: Re: recent performance problems? Message-ID: <20030507185152.GA39911@node1.cluster.srrc.usda.gov> In-Reply-To: <XFMail.20030507140236.jhb@FreeBSD.org> References: <20030507173548.GA24421@node1.cluster.srrc.usda.gov> <XFMail.20030507140236.jhb@FreeBSD.org>
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On Wed, May 07, 2003 at 02:02:36PM -0400, John Baldwin wrote: > On 07-May-2003 Glenn Johnson wrote: > > > On Tue, May 06, 2003 at 10:22:20PM -0700, Doug Barton wrote: > > > >> On Wed, 7 May 2003, W. Josephson wrote: > >> > >> > On Tue, May 06, 2003 at 09:40:19PM -0700, Doug Barton wrote: > >> > > >> > > On Wed, 7 May 2003, W. Josephson wrote: > >> > > > >> > > > On Tue, May 06, 2003 at 08:51:09PM -0700, Doug Barton wrote: > >> > > > > >> > > > > Do the recommendations in UPDATING help you guys at all? > >> > > > > >> > > > I'm not quite sure what you are after > >> > > > >> > > Did you actually read /usr/src/UPDATING? > >> > > >> > yes. Do you actually care about having feedback on -CURRENT? > >> > >> Yes we do. That's why I asked. Which of the options suggested in > >> UPDATING did you try, and what were the results? > > > > In my case I have all of the debugging options off as per UPDATING. > > I think I have a system with a different twist though. Here is the > > uname output: > > > > FreeBSD 5.1-BETA #2: Tue May 6 10:38:29 CDT 2003 > > root@node1.cluster.srrc.usda.gov:/usr/obj/usr/src/sys/CLUSTER-FW > > > > When I first boot the system up it is fine. However, it slows > > down after a period of time. Within a few hours it is essentially > > unusable. It does not seem to be a gradual slowdown but I do > > not know how to quantify that. I did find the following in > > /var/log/messages after the most recent slowdown: > > > > May 6 19:52:21 node1 kernel: swap_pager: indefinite wait buffer: > > device: twed0s1b, blkno: 408, size: 4096 > > > > The system had been up for about four and a half hours and the time > > stamp above corresponds to when the slowdown occurred. Now, I could > > be having problems with the 3-Ware RAID card or this could be the > > same thing that others are reporting. Anyway, I thought I should > > share that as it might provide a clue to someone. > > It sounds like perhaps a lock is being held across sleep or some such. > Have you tried running the system with WITNESS and INVARIANTS turned > on? No I have not but I will. -- Glenn Johnson USDA, ARS, SRRC Phone: (504) 286-4252 New Orleans, LA 70124 e-mail: gjohnson@srrc.ars.usda.gov
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