From: Andrew Morton <akpm@zip.com.au>
To: Yusuf Goolamabbas <yusufg@outblaze.com>
Cc: ext3-users@redhat.com, linux-kernel@vger.kernel.org,
anton@samba.org, axboe@suse.de
Subject: Re: 2.4.17-pre2+ext3-0.9.16+anton's cache aligned smp
Date: Thu, 06 Dec 2001 00:45:17 -0800 [thread overview]
Message-ID: <3C0F301D.3368595@zip.com.au> (raw)
In-Reply-To: <3C0B12C5.F8F05016@zip.com.au> <1007595740.818.2.camel@phantasy>, <1007595740.818.2.camel@phantasy> <20011206163056.A15550@outblaze.com>
Yusuf Goolamabbas wrote:
>
> Running 2.4.17-pre2 + ext3-0.9.16 + Anton Blanchards
> cacheline_aligned_smp patch available at
>
> http://samba.org/~anton/linux/cacheline_aligned/
omigod look at that graph.
Excuse me while I get frustrated. Will someone *please* send that
damn patch to marcelo@conectiva.com.br?
(It can be improved further by putting padding *behind* the lock
but hey).
> ...
>
> With Anton's patch, the number of ctx-swtch/sec drops by around 3000
> from avg of 9000 (for 17-pre2+ext3) to avg of 6000 (with anton) as seen
> by vmstat 1
Really? The spinlock cacheline alignment alone made that
difference? I wonder why.
Thanks for testing.
-
next prev parent reply other threads:[~2001-12-06 8:46 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-12-03 5:51 ext3-0.9.16 against linux-2.4.17-pre2 Andrew Morton
2001-12-05 12:32 ` Florian Lohoff
2001-12-05 12:36 ` Mike Fedyk
2001-12-05 12:37 ` Florian Lohoff
2001-12-05 23:42 ` Robert Love
2001-12-06 8:30 ` 2.4.17-pre2+ext3-0.9.16+anton's cache aligned smp Yusuf Goolamabbas
2001-12-06 8:39 ` Jens Axboe
2001-12-06 8:45 ` Andrew Morton [this message]
2001-12-06 13:02 ` Anton Blanchard
2001-12-07 15:27 ` Daniel Phillips
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