On 26/05/2007, at 15:05, Tommy Vercetti wrote:
Hi folks,
I was trying to get answer to my question around, but no one knows.
I do have DMA turned on, etc, yet - on extensive harddrive
operations wait
time is 90+% , which means that machine is waiting, rather than doing
something meanwhile. (I guess).
Can someone describe to me , in more detail why is that happening,
and what
steps should I consider to avoid it ? I couldn't find any answers
that would
have help me on net.
I see in your other post that you have a laptop disk drive and, based
on its specs, it is a 4200RPM one. Laptop drives are incredibly slow
for random disk access -- I have one and hate it with passion... even
though it is slightly better (5400RPM)...
You mention that you are doing expensive disk operations. If these
involve a lot of disk seeks (such as, for example, a "cvs update" on
a large source tree), disk performance will be very very poor and any
other operation you attempt on it will be slow as well. These kind
of drives are the major bottleneck of current laptop machines, in my
opinion.
(I just wanted to make this clear wrt the hardware. I do not know if
Linux is also involved or not.)
--
Julio M. Merino Vidal <[email protected]>
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