From: Ralf Baechle <ralf@linux-mips.org>
To: Alex Gonzalez <linux-mips@packetvision.com>
Cc: linux-mips@linux-mips.org
Subject: Re: Benchmarking RM9000
Date: Mon, 11 Jul 2005 00:14:19 +0100 [thread overview]
Message-ID: <20050710231419.GA28518@linux-mips.org> (raw)
In-Reply-To: <1120833749.28569.965.camel@euskadi.packetvision>
On Fri, Jul 08, 2005 at 03:42:29PM +0100, Alex Gonzalez wrote:
> The performance of our video application is well below our expectations.
> We are still doing some profiling work on it, but we are also looking at
> other possibilities.
>
> What other benchmarking tool would you recommend?
>
> Currently it's a NFS mounted system, but even if we could use a block
> device the access speed wouldn't be more than 1.5 Mbps, so that is a
> limitation for the benchmark.
As a shot into the dark ...
Make sure you exploit the RM9000's write-gathering capabilities when
writing into the frame buffer. If the frame buffer happens to be on
a PCI device you're probably performing uncached writes which will
slow down the thing to a crawl.
Ralf
next prev parent reply other threads:[~2005-07-11 7:52 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20050708091711Z8226352-3678+1954@linux-mips.org>
2005-07-08 12:02 ` CVS Update@linux-mips.org: linux Ralf Baechle
2005-07-08 12:12 ` Maciej W. Rozycki
2005-07-08 13:43 ` Richard Sandiford
2005-07-08 13:55 ` Ralf Baechle
2005-07-08 12:25 ` Benchmarking RM9000 Alex Gonzalez
2005-07-08 13:54 ` Laurence Darby
[not found] ` <20050708130131.GC2816@linux-mips.org>
2005-07-08 14:42 ` Alex Gonzalez
2005-07-10 23:14 ` Ralf Baechle [this message]
2005-07-11 15:43 ` Alex Gonzalez
2005-07-12 9:42 ` Ralf Rösch
2005-07-11 11:09 ` Laurence Darby
2005-07-11 11:55 ` Dominik 'Rathann' Mierzejewski
2005-07-08 14:35 Alex Gonzalez
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