Messages in this thread | | | Date | Wed, 1 Mar 2006 02:22:35 -0800 | From | Andrew Morton <> | Subject | Re: 2.6.16-rc[1-5]: soft lockups on Athlon64 X2 |
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Max Kellermann <max@duempel.org> wrote: > > On 2006/03/01 07:19, Andrew Morton <akpm@osdl.org> wrote: > > Strange. I did remove a cond_resched() from > > invalidate_mapping_pages() so that it could be run under spinlock > > but I cannot believe that you had so many pages cached that the > > invalidate took more than ten seconds. > > > > Does the machine recover and otherwise work OK? > > The mount indeed took more than ten (wallclock) seconds during which > the lockups occured, and after that it seemed usable (I rebooted > shortly after because I feared fs corruption). Normally, this mount > takes 2 seconds or so - it's a crypted 200GB XFS partition. The same > goes for the "bugged" kernel with "nosmp": mount is finished quickly. >
How is it encrypted? (With which kernel encryption stuff?)
I guess it'd be useful to see where all that time is spent, if you have time. Enable CONFIG_PROFILING, boot with `profile=1', do:
readprofile -r mount ... readprofile -n -v -m /boot/System.map | sort -n -k 3 | tail -40
(Make sure it's the correct System.map). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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