Date: Sat, 12 Jan 2008 13:40:34 -0500 From: "J.R. Oldroyd" <fbsd@opal.com> To: freebsd-stable@freebsd.org, Kris Kennaway <kris@freebsd.org> Subject: Re: RELENG_7 2008/01/10 desktop system also periodically freezes Message-ID: <20080112134034.75ded0b5@linwhf.opal.com> In-Reply-To: <20080112123053.164b5a5c@linwhf.opal.com> References: <1199812249.96494.133.camel@predator-ii.buffyverse> <4783C8A8.2090705@raad.tartu.ee> <4783D41B.3000204@FreeBSD.org> <4783D748.1050401@raad.tartu.ee> <4783D824.1050502@FreeBSD.org> <4783DB72.6030605@raad.tartu.ee> <4783DCAA.1080108@FreeBSD.org> <4783EA7E.1050008@raad.tartu.ee> <4783ED15.1060606@FreeBSD.org> <20080109141859.74d08743@linwhf.opal.com> <478522B5.5030101@FreeBSD.org> <20080109235819.7707133d@linwhf.opal.com> <4785C9FC.4090102@FreeBSD.org> <20080111124929.4aed2471@linwhf.opal.com> <20080112123053.164b5a5c@linwhf.opal.com>
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On Sat, 12 Jan 2008 12:30:53 -0500, I wrote:
>
> On Fri, 11 Jan 2008 12:49:29 -0500, I wrote:
> >
> > I have yet to experience a "random" freeze not directly attributable
>
> It is looking more likely to me that enabling lock profiling does mask
> ...
>
> At the time of that long freeze, all I was doing was typing an email
> message. The load average was almost 0. Mail client is claws-email.
> Also running but idle were firefox, ical, several xterms, fvwm & its
> children (Fvwm{Buttons,Event,Pager,IconMan}), xload and xclock. And
> xorg which uses the xf86-video-intel driver. Daemons running were
> wpa_supplicant, dhclient, devd, syslogd, cupsd, ntpd, powerd, sshd,
> sendmail, cron, moused and xdm. That is all.
>
> I had only one browser window open, the last page I'd viewed there
> was one containing some flash, I have linux-flash7 installed and
> nspluginwrapper to make that work in the native browser.
>
Ah! Just experienced a short freeze (it seemed like about 5 secs) while
lock profiling was enabled.
The profile from the last minute is here:
http://opal.com/jr/freebsd/releng_7-freeze/200801121331-unknown.txt
There's an almost 4 second wait_avg for:
/usr/src/sys/sys/buf.h:280 (lockmgr:bufwait)
I had exactly the same mix of programs open as shown above.
-jr
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