lkml.org 
[lkml]   [2003]   [Aug]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH][2.6-mm] Readahead issues and AIO read speedup
I ran an Database workload on the test3-mm1 bits and got around 20% 
improvement. These bits have Suparna's readahead_patch.

The number of 4k read requests sent to the driver reduced significantly by
95%. Effectively generating lesser number of larger-size read-requests.

And the number of readahead-window-resets dropped down by 50%.

FYI,
Ram Pai

On Fri, 8 Aug 2003, Suparna Bhattacharya wrote:

> On Thu, Aug 07, 2003 at 01:58:19PM -0700, Andrew Morton wrote:
> > Badari Pulavarty <pbadari@us.ibm.com> wrote:
> > >
> > > On Thursday 07 August 2003 10:39 am, Andrew Morton wrote:
> > > > Badari Pulavarty <pbadari@us.ibm.com> wrote:
> > > > > We should do readahead of actual pages required by the current
> > > > > read would be correct solution. (like Suparna suggested).

--
Ram Pai
linuxram@us.ibm.com
----------------------------------




-
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 13:47    [W:0.102 / U:3.812 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site