On Friday 24 March 2006 08:31, vanja@pobox.com wrote:
On Thu, Mar 23, 2006 at 04:54:44PM +0100, Peter Kjellström wrote:
On Thursday 23 March 2006 15:37, Vanja Hrustic wrote:
...
Have you tried to figure out if it's reading or writing or both that suck? try this:
time dd if=/dev/zero of=testfile bs=1M count=1000
time dd if=testfile of=/dev/null bs=1M
If you have 1 gig ram or more adjust count...
As usual, I get to test more things only after I make a post to the mailing list :)
fwiw, it was a very good bugreport making progress easy.
What I found out is that 1 disk is creating problems (out of those 2), and only when reading.
So, that 200GB Maxtor has no problems writing (300MB file gets written in few seconds, when it's read from another 80GB SATA disk), but when I read something from that disk - I get 2MB/sec. I have no trouble reading from 80GB SATA disk, so I guess it will be cable/hardware related.
Also, I said it works ok in Windows, but Windows partition is located on 80GB drive. 200GB drive only holds Linux partitions.
I have no idea why hdparm reports 50MB/sec rates on 200GB disk, but I'll just assume that hdparm doesn't use "real life" way of testing speed :)
It just reads, and only at the beginning of the device.
/Peter
Thanks for feedback. I will post again when/if I fix this, and figure out if it was indeed a hardware problem.
Take care.
Vanja