lkml.org 
[lkml]   [2004]   [Mar]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] speed up SATA
On Sun, Mar 28, 2004 at 08:29:12PM -0800, Wim Coekaerts wrote:
> > In 2.4 reaching 512k DMA units that helped a lot, but going past 512k
> > didn't help in my measurements. 1M maybe these days is needed (as Jens
> > suggested) but >1M still sounds overkill and I completely agree with
> > Jens about that.
>
> at least 1Mb... more than 1mb (I doubt 32mb is really necessarily
> useful) is nice for flushing contiguous journal data to disk. between
> 1-8mb in one io.
>
> at least 1mb is good when you have to process massive amounts of data,
> just read huge chunks of files, we tend to do 1mb. anyway,
> as you said, at some point it's a bit overkill . I thinkg 1-8mb makes
> sense.

1M certainly it's reasonable, though for 8M I've my doubt you can
measure a throughput improvement, can you?
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:02    [from the cache]
©2003-2011 Jasper Spaans