From: Jens Axboe <jens.axboe@oracle.com>
To: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: linuxppc-dev@ozlabs.org, linux-kernel@vger.kernel.org,
cbe-oss-dev@ozlabs.org
Subject: Re: [PATCH] ps3vram: Replace mutex by spinlock + list
Date: Fri, 3 Apr 2009 20:03:17 +0200 [thread overview]
Message-ID: <20090403180317.GB5178@kernel.dk> (raw)
In-Reply-To: <1238763938-7076-4-git-send-email-Geert.Uytterhoeven@sonycom.com>
On Fri, Apr 03 2009, Geert Uytterhoeven wrote:
> Remove the mutex serializing access to the cache.
> Instead, queue up new requests on a list if the driver is busy.
>
> This improves sequential write performance by ca. 2%.
Great, precisely the method I wanted to see there! I've added your three
patches, thanks Geert.
--
Jens Axboe
WARNING: multiple messages have this Message-ID (diff)
From: Jens Axboe <jens.axboe@oracle.com>
To: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Cc: linux-kernel@vger.kernel.org, linuxppc-dev@ozlabs.org,
cbe-oss-dev@ozlabs.org
Subject: Re: [PATCH] ps3vram: Replace mutex by spinlock + list
Date: Fri, 3 Apr 2009 20:03:17 +0200 [thread overview]
Message-ID: <20090403180317.GB5178@kernel.dk> (raw)
In-Reply-To: <1238763938-7076-4-git-send-email-Geert.Uytterhoeven@sonycom.com>
On Fri, Apr 03 2009, Geert Uytterhoeven wrote:
> Remove the mutex serializing access to the cache.
> Instead, queue up new requests on a list if the driver is busy.
>
> This improves sequential write performance by ca. 2%.
Great, precisely the method I wanted to see there! I've added your three
patches, thanks Geert.
--
Jens Axboe
next prev parent reply other threads:[~2009-04-03 18:03 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-03 13:05 [PATCH] ps3vram: Fix error path (return -EIO) for short read/write Geert Uytterhoeven
2009-04-03 13:05 ` Geert Uytterhoeven
2009-04-03 13:05 ` [PATCH] ps3vram: Use proc_create_data() instead of proc_create() Geert Uytterhoeven
2009-04-03 13:05 ` Geert Uytterhoeven
2009-04-03 13:05 ` [PATCH] ps3vram: Correct exchanged gotos in ps3vram_probe() error path Geert Uytterhoeven
2009-04-03 13:05 ` Geert Uytterhoeven
2009-04-03 13:05 ` [PATCH] ps3vram: Replace mutex by spinlock + list Geert Uytterhoeven
2009-04-03 13:05 ` Geert Uytterhoeven
2009-04-03 18:03 ` Jens Axboe [this message]
2009-04-03 18:03 ` Jens Axboe
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