Re: [Ext2-devel] Re: [RFC][PATCH 0/2]Extend ext3 filesystem limit from 8TB to 16TB

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On Tue, 2006-04-18 at 09:14 +0200, Laurent Vivier wrote:
> Le lun 17/04/2006 à 23:32, Ravikiran G Thirumalai a écrit :
> > On Mon, Apr 17, 2006 at 11:09:36PM +0200, Arjan van de Ven wrote:
> > > On Mon, 2006-04-17 at 14:07 -0700, Ravikiran G Thirumalai wrote:
> > > > 
> > > > 
> > > > I ran the same tests on a 16 core EM64T box very similar to the one
> > > > you ran
> > > > dbench on :). Dbench results on ext3 varies quite a bit.  I couldn't
> > > > get 
> > > > to a statistically significant conclusion  For eg,
> > > 
> > > 
> > > dbench is not a good performance benchmark. At all. Don't use it for
> > > that ;)
> > 
> > Agreed. (I did not mean to use it in the first place :).  I was just trying 
> > to verify the benchmark results posted earlier)
> > 
> > Thanks,
> > Kiran
> 
> What is the good performance benchmark to know if we should use atomic_t
> instead of percpu_counter ?

you probably want something like postal/postmark instead or so (although
that's not ideal either), at least that's reproducable

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