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Message-ID: <20080804065101.6f70725a@infradead.org>
Date: Mon, 4 Aug 2008 06:51:01 -0700
From: Arjan van de Ven <arjan@...radead.org>
To: Alan Cox <alan@...rguk.ukuu.org.uk>
Cc: Keith Packard <keithp@...thp.com>,
Ingo Oeser <ioe-lkml@...eria.de>,
John Stoffel <john@...ffel.org>,
Christoph Hellwig <hch@...radead.org>,
Eric Anholt <eric@...olt.net>, linux-kernel@...r.kernel.org
Subject: Re: files/process scaling problem? (was: [PATCH] Export
shmem_file_setup and shmem_getpage for DRM-GEM)
On Mon, 4 Aug 2008 09:19:30 +0100
Alan Cox <alan@...rguk.ukuu.org.uk> wrote:
> > The other issue is that several important applications (including
> > the X server) use select instead of poll, and they have a small
> > maximum number of fds that they support. It seems like this could
> > be worked around by dup2'ing the shmem fds up a ways.
>
> That would work yes. Switching to poll() would probably be even
> smarter, or if you have a large number of fds being scanned take a
> look at epoll which is likely to be far more efficient but wouldn't
> be available on so many systems - poll is at least standard.
> --
the hard part is that DRI is a library that gets linked into existing
applications... which already are using select ;-(
Fixing X is one thing and not impossible.. fixing all existing games in
the field is quite another
--
If you want to reach me at my work email, use arjan@...ux.intel.com
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
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