lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ