Re: ia_64_bit Performance difference

[Arjan van de Ven <arjan@infradead.org>]

On Tue, 2005-12-27 at 13:10 +0500, Nauman Tahir wrote:
> On 12/27/05, Arjan van de Ven <arjan@infradead.org> wrote:
> > On Tue, 2005-12-27 at 12:18 +0500, Nauman Tahir wrote:
> > > Hi all,
> > > I have written a block device driver. Driver includes the
> > > implementation of write back cache policy. Purpose of the driver is
> > > not an issue. The problem I am facing is the considerable difference
> > > of performance when I run same driver on 32 and 64 BIT OS. I am
> > > testing the driver on 64 Bit Machine and run the same driver on both
> > > (32 and 64 Bit) OS. On 32 Bit, IO rate is almost double then on 64 Bit
> > > OS. ( i wish it could have been opposite :( )
> >
> > you forgot to post the URL to your source code...
> 
> I did NOT FORGET to post the URL of my code

it's gpl.. so what's the problem?
with the code we can see if you made a bug somewhere or did something
weird that will kill performance. without it... it's a guessing game
that only wastes our time.