Re: DMA on Friday night server

Damien Hull wrote:

>I think I have DMA working on the Friday night server.
>
> hdparm -Tt /dev/hdb
>
> /dev/hdb:
> Timing cached reads: 348 MB in 2.00 seconds = 173.68 MB/sec
> Timing buffered disk reads: 64 MB in 3.09 seconds = 20.72 MB/sec
> [root@testb ~]# hdparm -v /dev/hdb
>
> /dev/hdb:
> multcount = 16 (on)
> IO_support = 0 (default 16-bit)
> unmaskirq = 0 (off)
> using_dma = 1 (on)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 65535/16/63, sectors = 81964302336, start = 0
> [root@testb ~]#
>
>"hdb" is where all the data is.
>
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>
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>
Here's more info.

    hdparm -i /dev/hdb

    /dev/hdb:

     Model=Maxtor 6Y080L0, FwRev=YAR41BW0, SerialNo=Y2MP82KE
     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=160086528
     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
     UDMA modes: udma0 udma1 *udma2 udma3 udma4 udma5 udma6
     AdvancedPM=yes: disabled (255) WriteCache=enabled
     Drive conforms to: (null):

     * signifies the current active mode

    [root@testb ~]# hdparm -i /dev/hda

    /dev/hda:

     Model=Maxtor 83240D3, FwRev=NAVX171F, SerialNo=L326XNPA
     Config={ Fixed }
     RawCHS=6697/15/63, TrkSize=0, SectSize=0, ECCbytes=20
     BuffType=DualPortCache, BuffSize=256kB, MaxMultSect=16, MultSect=16
     CurCHS=6697/15/63, CurSects=6328665, LBA=yes, LBAsects=6329388
     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
     UDMA modes: udma0 udma1 *udma2
     AdvancedPM=no WriteCache=enabled
     Drive conforms to: ATA/ATAPI-4 X3T13 1153D revision 7: 1 2 3

     * signifies the current active mode

If anyone thinks I need to make changes let me know.
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Received on Thu Jul 7 20:04:03 2005