Andrew Lyon wrote:
> Hi,
>
> I have a Gigabyte GA_965P_DS3 with Core 2 Duo CPU, wd raptor connected
> to onboard JMicron 20360/20363 AHCI Controller, with 2.6.18 the drive
> is very slow:
>
> beast ~ # uname -a
> Linux beast 2.6.18 #1 SMP Wed Sep 20 15:04:24 BST 2006 i686 Intel(R)
> Core(TM)2 C
> PU 6600 @ 2.40GHz GNU/Linux
> beast ~ # hdparm -t /dev/sda
>
> /dev/sda:
> Timing buffered disk reads: 100 MB in 3.02 seconds = 33.10 MB/sec
Which IO scheduler are you using? If you're using anticipatory or cfq,
can you try deadline?
Thanks.
--
tejun
Very strange, I rebooted into deadline scheduler kernel, the drive
performed as fast as with 2.6.17, due to a different problem I had to
do a hard reset and the box booted back into 2.6.18 with anticipatory
scheduler, but this time the dirve performed fine!
I had initially upgraded the kernel remotely and had only done
shutdown now -r, not a hard reset, Is it generally advisable to do a
hard reset when upgrading the kernel? (ive never read that) Is there
any way to do that remotely?
One last question, I recently got a sata dvd writer for this box as
the pata ports on the jmicron were not supported, I notice there is
now support for them in 2.6.18 (with generic ide), but which would be
best supported ? the sata dvdrw or the pata? I currently have both
available and neither is installed.
Thanks
Andy
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