Date: Thu, 8 Jul 2004 16:10:21 +0200 From: Thorsten Greiner <thorsten@tgreiner.net> To: Taku YAMAMOTO <taku@tackymt.homeip.net> Cc: freebsd-current@freebsd.org Subject: Re: Native preemption is the culprit [was Re: today's CURRENT lockups] Message-ID: <20040708141020.GA839@tybalt.nev.psi.de> In-Reply-To: <20040708222143.0f24c076.taku@tackymt.homeip.net> References: <20040705184940.GA2651@tybalt.greiner.local> <Pine.NEB.3.96L.1040706001249.2853I-100000@fledge.watson.org> <20040708222143.0f24c076.taku@tackymt.homeip.net>
next in thread | previous in thread | raw e-mail | index | archive | help
[-- Attachment #1 --]
* Taku YAMAMOTO <taku@tackymt.homeip.net> [2004-07-08 15:31]:
> This patch is tested on P4@2.8GHz HTT-enabled machine.
>
> It has been running for several hours without a hang, although I have to
> admit that this machine is too idle, far from being stressed.
On my box I get these warnings:
Jul 8 15:56:46 tybalt kernel: ad0: WARNING - WRITE_DMA interrupt
was seen but timeout fired LBA=4063551
Jul 8 15:57:03 tybalt kernel: ad0: WARNING - READ_DMA interrupt was
seen but timeout fired LBA=19449983
Jul 8 15:57:30 tybalt kernel: ad0: WARNING - READ_DMA interrupt was
seen but timeout fired LBA=19981629
Jul 8 15:57:50 tybalt kernel: ad0: WARNING - READ_DMA interrupt was
seen but timeout fired LBA=11457711
Jul 8 15:58:22 tybalt kernel: ad0: WARNING - READ_DMA interrupt was
seen but timeout fired LBA=24073775
Jul 8 15:58:25 tybalt kernel: ad0: WARNING - WRITE_DMA interrupt
was seen but timeout fired LBA=25168335
This is while performing a background fsck. In this state the system
seems to hang, probably waiting for some disk i/o to finish.
Regards
-Thorsten
--
Unix is user friendly, it's just particular about the friends it chooses.
This message is digitally signed. To verify its integrity, download a copy
of GnuPG for your operating system from http://www.gnupg.org .
[-- Attachment #2 --]
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (FreeBSD)
iD8DBQFA7VXMRThlmOhl9moRAnBhAJwPDkl5roTgAge+MoONp2guhXVkMQCgyN+r
47NZXdLfQzV9oWvzW6OCs3A=
=AxSB
-----END PGP SIGNATURE-----
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20040708141020.GA839>