From: "Stephen C. Tweedie" <sct@redhat.com>
To: "Juan J. Quintela" <quintela@fi.udc.es>
Cc: marcelo@conectiva.com.br, linux-mm@kvack.org,
linux-fsdevel@vger.rutgers.edu
Subject: Re: PATCH: Trying to get back IO performance (WIP)
Date: Mon, 3 Jul 2000 11:46:51 +0100 [thread overview]
Message-ID: <20000703114651.G2699@redhat.com> (raw)
In-Reply-To: <ytthfa8oyc8.fsf@serpe.mitica>; from quintela@fi.udc.es on Mon, Jul 03, 2000 at 02:24:07AM +0200
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Hi,
On Mon, Jul 03, 2000 at 02:24:07AM +0200, Juan J. Quintela wrote:
> This patch is against test3-pre2.
> It gives here good performance in the first run, and very bad
> in the following ones of dbench 48. I am hitting here problems with
> the locking scheme. I get a lot of contention in __wait_on_supper.
> Almost all the dbench processes are waiting in:
>
> 0xc013639c __wait_on_super+0x184 (0xc13f4c00)
> 0xc01523e5 ext2_alloc_block+0x21 (0xc4840c20, 0x12901d, 0xc7427ea0)
Known, and I did a patch for this ages ago. It actually didn't make a
whole lot of difference. The last version of the ext2 diffs I did for
this are included below.
--Stephen
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prev parent reply other threads:[~2000-07-03 10:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-07-03 0:24 PATCH: Trying to get back IO performance (WIP) Juan J. Quintela
2000-07-03 10:46 ` Stephen C. Tweedie [this message]
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