From: "Marcus G. Daniels" <mdaniels@lanl.gov>
To: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: Jens Axboe <axboe@kernel.dk>, Arnd Bergmann <arnd@arndb.de>,
Linux Kernel Development <linux-kernel@vger.kernel.org>,
Jim Paris <jim@jtan.com>,
Linux/PPC Development <linuxppc-dev@ozlabs.org>,
linux-mtd@lists.infradead.org,
Vivien Chappelier <vivien.chappelier@free.fr>,
Cell Broadband Engine OSS Development <cbe-oss-dev@ozlabs.org>
Subject: Re: [Cbe-oss-dev] [PATCH/RFC] ps3/block: Add ps3vram-ng driver for accessing video RAM as block device
Date: Wed, 04 Mar 2009 17:21:42 -0700 [thread overview]
Message-ID: <49AF1B16.5000907@lanl.gov> (raw)
In-Reply-To: <alpine.LRH.2.00.0903041444300.32279@vixen.sonytel.be>
Geert Uytterhoeven wrote:
> Ideally, we think it would be best if the existing MTD-based ps3vram driver
> would be replaced by the new block-based ps3vram driver before 2.6.29 is
> released. This would relieve the burden of supporting two different swap space
> schemes on PS3 (swap on /dev/mtdblock0 vs. /dev/ps3vram) from the distro
> maintainer's shoulders, as in that case there would never have been a stable
> kernel version containing the MTD-based ps3vram driver.
> [..]
> - ps3vram-ng is faster than ps3vram:
> o 1 MiB blocks: +50% (read), +5% (write)
> o 4 KiB blocks: +50% (read), +5% (write)
> o 512 B blocks: +10% (read), +10% (write)
>
Fwiw, it's a useful swap device, since space is so limited -- the
performance improvements are certainly appealing too.
Marcus
next prev parent reply other threads:[~2009-03-05 1:02 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-04 13:57 [PATCH/RFC] ps3/block: Add ps3vram-ng driver for accessing video RAM as block device Geert Uytterhoeven
2009-03-04 23:27 ` Benjamin Herrenschmidt
2009-03-05 6:54 ` Jens Axboe
2009-03-06 12:54 ` [PATCH] ps3/block: Replace mtd/ps3vram by block/ps3vram (was: Re: [PATCH/RFC] ps3/block: Add ps3vram-ng driver for accessing video RAM as block device) Geert Uytterhoeven
2009-03-09 17:51 ` [PATCH] ps3/block: Replace mtd/ps3vram by block/ps3vram Geoff Levand
2009-03-05 0:21 ` Marcus G. Daniels [this message]
2009-03-05 7:17 ` [PATCH/RFC] ps3/block: Add ps3vram-ng driver for accessing video RAM as block device Olaf Hering
2009-03-05 7:59 ` Geert Uytterhoeven
2009-03-05 10:24 ` Geert Uytterhoeven
2009-03-05 18:12 ` Olaf Hering
2009-03-05 8:37 ` Jens Axboe
2009-03-05 10:50 ` Geert Uytterhoeven
2009-03-05 11:09 ` Jens Axboe
2009-03-05 16:45 ` Geert Uytterhoeven
2009-03-06 7:46 ` Jens Axboe
2009-03-06 12:48 ` Geert Uytterhoeven
2009-03-06 12:58 ` Jens Axboe
2009-03-06 14:26 ` Geert Uytterhoeven
2009-03-06 19:03 ` Jens Axboe
2009-03-09 10:43 ` Geert Uytterhoeven
2009-03-09 10:48 ` Jens Axboe
2009-03-09 10:50 ` Jens Axboe
2009-03-09 10:52 ` Geert Uytterhoeven
2009-03-09 10:58 ` Jens Axboe
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=49AF1B16.5000907@lanl.gov \
--to=mdaniels@lanl.gov \
--cc=Geert.Uytterhoeven@sonycom.com \
--cc=arnd@arndb.de \
--cc=axboe@kernel.dk \
--cc=cbe-oss-dev@ozlabs.org \
--cc=jim@jtan.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mtd@lists.infradead.org \
--cc=linuxppc-dev@ozlabs.org \
--cc=vivien.chappelier@free.fr \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).