Hi,
On my 17GB HDD, if I enable 32bit IO using
hdparm -c1 /dev/hda
the read / write speed shows decrease in speed and not increase. Why is this happening
?
Any ideas.
Here are the results :
rajesh:~ # hdparm -c1 /dev/hda
/dev/hda:
setting 32-bit I/O support flag to 1
I/O support = 1 (32-bit)
rajesh:~ # hdparm -Tt /dev/hda
/dev/hda:
Timing buffer-cache reads: 64 MB in 2.37 seconds =27.00 MB/sec
Timing buffered disk reads: 32 MB in 6.64 seconds = 4.82 MB/sec
rajesh:~ # hdparm -c0 /dev/hda
/dev/hda:
setting 32-bit I/O support flag to 0
I/O support = 0 (default 16-bit)
rajesh:~ # hdparm -Tt /dev/hda
/dev/hda:
Timing buffer-cache reads: 64 MB in 1.69 seconds =37.87 MB/sec
Timing buffered disk reads: 32 MB in 8.32 seconds = 3.85 MB/sec
Thanks in advance.
Rajesh
Shanker Balan saw fit to inform me that:
>Put the hdparm line in the file /etc/rc.d/rc.local
>
>--Shanu
>
--
Rajesh(ALIAS Shriram) Fowkar
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