Messages in this thread | | | Date | Thu, 6 Nov 2003 14:11:41 +0100 | From | Jens Axboe <> | Subject | Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt |
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On Fri, Nov 07 2003, Nick Piggin wrote: > > > Jens Axboe wrote: > > >On Fri, Nov 07 2003, Nick Piggin wrote: > > > >> > >>Jens Axboe wrote: > >> > >> > >>>sys time is usually pretty high if that is the case, and it's hovering > >>>around 5% here... Prakash, are you sure that dma is enabled on the > >>>drive? When you see the problem, do a vmstat 1 for 10 seconds so you are > >>>absolutely sure you are sending the info from when the problem occurs. > >>> > >>> > >>Although have a look at the interrupts field in vmstat 1255, 725, 736 ... > >> > > > >Yeah that is pretty high for just doing a burn, maybe something else is > > > > ;) you are forgetting 2.6 should give 1000 timer interrupts per second!
Heh indeed, maybe because the archs I use are still at 100. Looks suspiciously like it's loosing timer interrupts, which would indeed point to PIO.
-- Jens Axboe
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