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Date: Wed, 28 Jan 2009 15:13:27 -0800
From: Andrew Sharp <andy.sharp@onstor.com>
To: Narayan Venkat <narayan.venkat@onstor.com>
Cc: Patrick Haverty <patrick.haverty@onstor.com>, dl-Leopard
 <dl-Leopard@onstor.com>, dl-Performance <dl-performance@onstor.com>
Subject: Re: Leopard Initial NFS Performance Results
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I believe you are a bit confused, N.  Allow me to remind you:
marketing==fudge

On Wed, 28 Jan 2009 14:53:13 -0800 Narayan Venkat
<narayan.venkat@onstor.com> wrote:

> Your comment doesn't make sense!  We are not here to fudge numbers!
> We are talking about suggesting the right configuration and settings
> to get the best performance.
> 
> Narayan Venkat
> Vice President, Marketing
> ONStor Inc. (www.onstor.com)
> Tel: (408) 963-2404
> Cell: (408) 221-4297
> 
> -----Original Message-----
> From: Andy Sharp 
> Sent: Wednesday, January 28, 2009 2:24 PM
> To: Narayan Venkat
> Cc: Patrick Haverty; dl-Leopard; dl-Performance
> Subject: Re: Leopard Initial NFS Performance Results
> 
> On Wed, 28 Jan 2009 14:02:44 -0800 Narayan Venkat
> <narayan.venkat@onstor.com> wrote:
> 
> > Pat,
> > 
> > What is the recordsize of the ZFS filesystem?  If it is 128K, then
> > it makes sense to use that for the sequential write & read numbers. 
> 
> Only for marketing numbers.  For comparative testing, you should use
> the same size for all, regardless.
> 
> > As for random read and write, we should test with a recordsize that
> > is less than 128K.  Something like 16K or 32K.  Otherwise, we are
> > not leveraging the file systems capability to handle different
> > workloads.
> 
> Hmm, how about 8K?  ~:^)
> 
> > Thanks.
> > 
> > Narayan Venkat
> > Vice President, Marketing
> > ONStor Inc. (www.onstor.com<http://www.onstor.com>)
> > Tel: (408) 963-2404
> > Cell: (408) 221-4297
> > ________________________________
> > From: Patrick Haverty
> > Sent: Wednesday, January 28, 2009 11:07 AM
> > To: dl-Leopard; dl-Performance
> > Subject: Leopard Initial NFS Performance Results
> > 
> > The lower chart shows the results I'm getting now that the four
> > clients have all been updated to a more recent Red Hat version.
> > Interesting is that sequential write performance exceeds read
> > performance with multiple clients.  Since the clients have been
> > updated, results are much more repeatable than I was seeing
> > previously.
> > 
> > Cheers,
> > 
> > Pat
