Mivz wrote:
/dev/sda:
Timing cached reads: 1424 MB in 2.00 seconds = 711.96 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
Timing buffered disk reads: 114 MB in 3.00 seconds = 37.95 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate
ioctl for device
Now I tryed a old Gentoo 1.4-rc1 livecd, cause this one loads the disk
still as /dev/hda and not sda.
After enabling dma, 32bit io and udma: hdparm -X66 -c1 -d1
It had a speed of 2560.00 MB/sec bufferd
and 37,65 unbufferd.
The unbuffered speed is identical, the cached read is the only
difference. Cached reads are not a test of hard disk performance, this
is a mostly useless benchmark (note that on that metric, your cdrom
drive performs at the same speed as your hard disk...)
Daniel
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