Hi,
I saw a strange thing I can't explain:
I have an IDE disk, FUJITSU MHV2080AS with a PCI controller:
Quote:
|
0000:00:1f.1 IDE interface: Intel Corporation 82801DB (ICH4) IDE Controller (rev 02)
|
under kernel 2.6.5.
The problem is:
If the disk write cache is enabled,
hdparm -t /dev/hc
measures a read speed of cca. 30 MB/s.
If I disable the disk write cache with
hdparm -W 0 /dev/hdc
then the transfer speed measured drops back to cca. 26 MB/s.
This is reproducible.
This is strange as
hdparm -t should perform read tests only, right ?
