Re: [PATCH][2.6-mm] Readahead issues and AIO read speedup

[Ram Pai]

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@xxxxxxxxxx> wrote:
> > >
> > > On Thursday 07 August 2003 10:39 am, Andrew Morton wrote:
> > >  > Badari Pulavarty <pbadari@xxxxxxxxxx> wrote:
> > >  > > We should do readahead of actual pages required by the current
> > >  > > read would be correct solution. (like Suparna suggested).

-- 
Ram Pai
linuxram@xxxxxxxxxx
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