Re: 2.2.13pre15 SMP+IDE test summary

Andre Hedrick (andre@suse.com)
Wed, 6 Oct 1999 21:15:11 -0700 (PDT)


Since this is appearing to be a disk only thingy........

There is an item to be addressed in ide-disk.c

PIO request cues.......as they take longer to service........is is
possible that we are slipping out of the rq-> order and loading the
do_ide_request with repeated calls more often than the acknowledged and
cleared?

Andre Hedrick
The Linux IDE guy

On Wed, 6 Oct 1999, Ingo Molnar wrote:

>
> On Wed, 6 Oct 1999 thx@rivalnet.de wrote:
>
> > One more pre15 test:
> > 2.2.13pre15 with Unified IDE 2.2.13pre14-19991003 (two rejects in ide.c, one ok, one probably harmless):
> > (5) dual P3 machine: NULL deref after 6 hours (i.e. this pre15 kernel survived longest)
>
> is it correct that this failing kernel didnt have the RAID patch applied?
>
> > I can think of these possible reasons for the SMP problems:
> >
> > (A) SMP race(s) in IDE driver in original 2.2.13pre15
> > (B) SMP-deadlock in raid-2.2.11-patch
>
> (B) is quite unlikely if you do not have it applied and the box still
> crashes? My understanding is that others who had IDE+SMP problems could
> reproduce it without RAID as well. (RAID0 stresses the hardware harder)
>
> -- mingo
>

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