I've used hdparm -Tt on all sorts of non-IDE devices: flash-memory drives, Raid
devices, RAM drives. It's never been a problem.
Kirk
Steve Adeff wrote:
On Thursday 13 October 2005 12:50, Kirk Bocek wrote:
Here's the output on my SATA drive:
# hdparm -Tt /dev/sda
/dev/sda:
Timing cached reads: 3832 MB in 2.00 seconds = 1915.88 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl
for device Timing buffered disk reads: 184 MB in 3.02 seconds = 60.84
MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
So it fails on some sort of IO command but still runs the benchmark.
Kirk
those IO errors are normal as hdparm is designed for IDE while the SATA
drivers treat SATA as a SCSI device. from your numbers though, DMA is
definitely on.
Steve
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