From: Greg Banks <gnb@sgi.com>
To: Dan Stromberg <strombrg@dcs.nac.uci.edu>
Cc: nfs@lists.sourceforge.net
Subject: Re: Some code, and a question
Date: Wed, 7 Sep 2005 11:02:19 +1000 [thread overview]
Message-ID: <20050907010219.GA14233@sgi.com> (raw)
In-Reply-To: <1126046397.3000.188.camel@seki.nac.uci.edu>
On Tue, Sep 06, 2005 at 03:39:57PM -0700, Dan Stromberg wrote:
>
> OK, I know NFS isn't usually thought of as the fastest protocol under
> the sun,
Why would you think that? NFSv3 can be very efficient at moving
bits from point A to point B.
> My question is, before diving into trying to determine this empirically,
> is there any theoretical reason why it would be better to have
> rsize==wsize,
>From a protocol point of view, no.
> or should it be better to just pick whatever rsize gives
> the best read performance and pick whatever wsize gives the best write
> performance, and not worry about if rsize!=wsize?
It will depend on the workload, but generally read and write throughput
will be better the larger the block size, up to a value beyond the
Linux kernel's ability to support. I expect you will find your optimum
at rsize=wsize=32K.
Greg.
--
Greg Banks, R&D Software Engineer, SGI Australian Software Group.
I don't speak for SGI.
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next prev parent reply other threads:[~2005-09-07 1:02 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-09-06 22:39 Some code, and a question Dan Stromberg
2005-09-07 1:02 ` Greg Banks [this message]
2005-09-07 14:37 ` Dan Stromberg
2005-09-07 14:55 ` Peter Staubach
2005-09-07 17:00 ` Dan Stromberg
2005-09-07 17:13 ` Peter Staubach
2005-09-07 17:25 ` Peter Staubach
2005-09-07 17:28 ` Dan Stromberg
2005-09-07 17:27 ` Peter Staubach
-- strict thread matches above, loose matches on Subject: below --
2005-09-07 15:34 Lever, Charles
2005-09-07 17:02 ` Dan Stromberg
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