[ale] why would it take longer to delete a file than to createit?

[Jim Kinney]

On Thu, May 6, 2010 at 1:22 PM, JK <jknapka at kneuro.net> wrote:

> On 5/6/2010 9:39 AM, Jim Kinney wrote:
> > Look through the hdparm variables and see if your drive(s) are in some
> > stupid/slow mode.
>
>
> Begging the question: what counts as "stupid/slow"?  I know that having
> DMA turned off, or set wrong, will kill performance.  What else should
> be checked?
>

Off the top of my head, you've found the list I recall.  I haven't done perf
tuning in a while so I'm fuzzy on details. Not sure if SATA drives eat the
same params as the IDE ones you listed. May not even be hdparm....

Thankfully I eat several times a day or I'd forget that too...

>
> And Google leads me to:
>
> http://www.linuxclues.com/articles/20.htm
>
> In general, PIO modes are slowest and UDMA modes are fastest, correct?
> I remember a while back I had a 160G RAID array that was literally
> taking days to rebuild. Turned out the HDs were in like PIO3 or something.
> Changed to UDMA4 and the rebuild completed in fifteen minutes.
>
> -- JK
>
>
> --
> Forget Jesus: stars died so that you could be here today.
>  - physicist Lawrence Krauss
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-- 
-- 
James P. Kinney III
Actively in pursuit of Life, Liberty and Happiness
Doing pretty well on all 3 pursuits
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