Messages in this thread | | | Date | Fri, 07 Nov 2003 00:54:43 +1100 | From | Nick Piggin <> | Subject | Re: 2.9test9-mm1 and DAO ATAPI cd-burning corrupt |
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Jens Axboe wrote:
>On Thu, Nov 06 2003, Prakash K. Cheemplavam wrote: > >>>>>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 >>> >>bash-2.05b# hdparm -i /dev/hdc >> >>/dev/hdc: >> >> Model=LITE-ON LTR-16102B, FwRev=OS0K, SerialNo= >> Config={ Fixed Removeable DTR<=5Mbs DTR>10Mbs nonMagnetic } >> RawCHS=0/0/0, TrkSize=0, SectSize=0, ECCbytes=0 >> BuffType=unknown, BuffSize=0kB, MaxMultSect=0 >> (maybe): CurCHS=0/0/0, CurSects=0, LBA=yes, LBAsects=0 >> IORDY=yes, tPIO={min:227,w/IORDY:120}, tDMA={min:120,rec:120} >> PIO modes: pio0 pio1 pio2 pio3 pio4 >> DMA modes: mdma0 mdma1 *mdma2 >> AdvancedPM=no >> >> * signifies the current active mode >> >>The same: dma is active. >> > >Indeed, so you are ysing multiword mode 2. Can you try and do a dd from >the drive, while doing a vmstat 1? Also, does that show the jerky >behaviour? >
AFAIK, Prakash cannot reproduce this bad behaviour with mm1, only mm2 (is this right, Prakash?). So its something there (don't forget Andrew merges the latest bk with his releases too).
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