Messages in this thread | | | Date | Thu, 6 Nov 2003 14:31:36 +0100 | From | Jens Axboe <> | Subject | Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt |
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On Thu, Nov 06 2003, Prakash K. Cheemplavam wrote: > Jens Axboe wrote: > >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. > > > bash-2.05b# hdparm -I /dev/hdc
-i please
> Is it normal that SCSI subsystem gets init'ed, even though nothing of it > is activated in the kernel?
No, you still have it left in your kernel options.
-- Jens Axboe
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