Why isn't my system runnning my disk in DMA ? I can't see where this
is set in XP.
It's an A7n8x modo with an 80GB EIDE disk and a 160GB SATA disk. Each
on it's own channel. CPU is an AMP Athlon 2200.
HDtach 2.70 reports:
50MB/s max @ 28% CPU on the 80GB disk
63MB/s max @73%CPU on the 160GB disk
The last time I screwed with DMS vs PIO was several years ago and
at that time I found DMA was better, and SCSI got CPU % utilizization
down to single digits. 73% on the SATA channel doesn't sound right.
Any suggestions ?
Thanks
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WD 80GB EIDE Disk:
Model ID WDC WD800JB-00CRA1
Parameters 155061 cyl, 16h, 63sec
LBA Sectors 156301488
Buffer 8 MB
Dual Ported, Read Ahead
Multiple Sectors 16
ECC Bytes 40
Max. PIO Transfer Mode PIO 4
Max. UDMA Transfer Mode UDMA 5 (ATA-100)
Active UDMA Transfer Mode UDMA 5 (ATA-100)
Unformatted Capacity 89436 MB
Maxtor 160GB SATA DIsk:
Model ID Maxtor 6Y160M0
Parameters 317632 cyl, 16h, 63sec
LBA Sectors 320173056
Buffer 7936 KB
Dual Ported, Read Ahead
Multiple Sectors 16
ECC Bytes 4
Max. PIO Transfer Mode PIO 4
Max. UDMA Transfer Mode UDMA 6 (ATA-133)
Active UDMA Transfer Mode UDMA 5 (ATA-100)
Unformatted Capacity 156334 MB
--
Al Dykes
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adykes at p a n i x . c o m
