Date: Sun, 28 Oct 2007 02:09:17 +0200 From: Roland Smith <rsmith@xs4all.nl> To: Kris Kennaway <kris@freebsd.org> Cc: freebsd-amd64@freebsd.org Subject: Re: Experiences with RELENG_7 Message-ID: <20071028000917.GC47576@slackbox.xs4all.nl> In-Reply-To: <4723CD55.5090307@FreeBSD.org> References: <20071027202252.GA40377@slackbox.xs4all.nl> <4723CD55.5090307@FreeBSD.org>
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--B4IIlcmfBL/1gGOG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sun, Oct 28, 2007 at 01:44:21AM +0200, Kris Kennaway wrote: > Roland Smith wrote: >> Hovewer, sometimes a program seems to hog the CPU for a couple of >> seconds (as seen in top(1)) >=20 > Can you please explain (with supporting paste of command output) what you= =20 > mean by this? I'll save some top output next time. But what happened was this; all of a sudden the mouse pointer started moving erratically, and the music playing in audacious started skipping. All other X programs started responding erratically as well. It looked like the X server wasn't getting any CPU time. After starting top in a terminal I saw that telak was at 99% WCPU. That is odd, because it's job is to keep a couple of pictures on the X root window updated every minute. I've used the same port (same version even) on 6-STABLE with SCHED_4BSD without these symptoms. It is started from my ~/.xinitrc. After killing telak, the situation returned to normal. I restarted telak, and a couple of hours later it happened again. It also happened with cc1 when I was compiling a port. In that case the situation returned to normal when that particular instance was finished. That compilation was running in a terminal window that was iconified at the time. In case I forgot to mention it, I deleted and recompiled all ports after the 6->7 update to make sure there was no old cruft lying around. I am running a custom kernel because I'm using GEOM_ELI. Do you need to see my kernel config? >> and interactivity suffers >> tremendously. Could this be the scheduler getting mixed up? This happened >> two times with graphics/telak, which I use to put update some graphs on >> my desktop every minute. In both cases I killed the program. But it also >> happened one time with cc1 during compilation of a program. >=20 > This is usually caused by the system running out of memory and touching= =20 > swap. Have you ruled this out? According to conky, memory usage was at around 35% (of 1GB) and swap usage was unused. Those are pretty regular values for this system. Roland --=20 R.F.Smith http://www.xs4all.nl/~rsmith/ [plain text _non-HTML_ PGP/GnuPG encrypted/signed email much appreciated] pgp: 1A2B 477F 9970 BA3C 2914 B7CE 1277 EFB0 C321 A725 (KeyID: C321A725) --B4IIlcmfBL/1gGOG Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.4 (FreeBSD) iD8DBQFHI9MtEnfvsMMhpyURAkv6AKCD1VfF7VvWKqMnWjIp/m3ERm4SPACeP443 2rJDYz82TdZCrohL2jRAd2s= =do0n -----END PGP SIGNATURE----- --B4IIlcmfBL/1gGOG--
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