On Tue, Nov 26, 2002 at 12:53:36PM -0600, David Bell wrote:
> Yes, DMA is enabled on all drives:
>
> [12:50:51][root@david:/home/david]# hdparm -i /dev/hda
>
> /dev/hda:
>
> Model=Maxtor 6E040L0, FwRev=NAR61590, SerialNo=E10RVGWE
> Config={ Fixed }
> RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=57
> BuffType=DualPortCache, BuffSize=2048kB, MaxMultSect=16, MultSect=16
> CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=80293248
> IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
> PIO modes: pio0 pio1 pio2 pio3 pio4
> DMA modes: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5 udma6
> AdvancedPM=yes: disabled (255) WriteCache=enabled
> Drive Supports : ataATA-1 ATA-2 ATA-3 ATA-4 ATA-5 ATA-6 ATA-7
I see NOTHING there that indicates if dma is on or off, only what is
supported. The * does NOT indicate linux is using dma.
/proc/ide/hd?/settings does, as might hdparm device, by itself.
Your method most certainly does not.
Len Sorensen
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