From: Fengguang Wu <wfg@mail.ustc.edu.cn>
To: Voluspa <lista1@comhem.se>
Cc: Valdis.Kletnieks@vt.edu, linux-kernel@vger.kernel.org
Subject: Re: Adaptive Readahead V14 - statistics question...
Date: Thu, 1 Jun 2006 13:51:43 +0800 [thread overview]
Message-ID: <349141076.14929@ustc.edu.cn> (raw)
Message-ID: <20060601055143.GA5216@mail.ustc.edu.cn> (raw)
In-Reply-To: <20060531235021.41a58425.lista1@comhem.se>
On Wed, May 31, 2006 at 11:50:21PM +0200, Voluspa wrote:
> _Massive READ_
>
> [/usr had some 490000 files]
>
> "cd /usr ; time find . -type f -exec md5sum {} \;"
>
> 2.6.17-rc5 ------- 2.6.17-rc5-ar
>
> real 21m21.009s -- 21m37.663s
> user 3m20.784s -- 3m20.701s
> sys 6m34.261s -- 6m41.735s
>
> I had planned to run this at least three times, but didn't realize I had
> 12 compiled kernel trees and 3 uncompiled there... So, a one-shot had to
> do. But it's still significant.
Sorry, it is a known regression. I'd like to fix it in the next
release.
Thanks,
Wu
next prev parent reply other threads:[~2006-06-01 5:51 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-30 3:36 Adaptive Readahead V14 - statistics question Voluspa
2006-05-30 6:40 ` Wu Fengguang
2006-05-30 6:40 ` Wu Fengguang
2006-05-30 16:49 ` Valdis.Kletnieks
2006-05-31 21:06 ` Diego Calleja
2006-05-31 21:50 ` Voluspa
2006-06-01 5:51 ` Fengguang Wu [this message]
2006-06-01 5:51 ` Fengguang Wu
2006-06-01 6:35 ` Voluspa
2006-06-08 8:04 ` Voluspa
2006-06-08 11:37 ` adaptive readahead overheads Fengguang Wu
2006-06-08 11:37 ` Fengguang Wu
2006-06-08 12:25 ` Voluspa
2006-06-08 12:39 ` Fengguang Wu
2006-06-08 12:39 ` Fengguang Wu
2006-06-08 13:05 ` Andi Kleen
2006-06-08 14:00 ` Jens Axboe
[not found] ` <448493E9.9030203@samwel.tk>
2006-06-06 3:34 ` Adaptive Readahead V14 - statistics question Wu Fengguang
2006-06-06 3:34 ` Wu Fengguang
-- strict thread matches above, loose matches on Subject: below --
2006-06-04 7:34 [PATCH] readahead: initial method - expected read size - fix fastcall Fengguang Wu
2006-06-04 7:34 ` Fengguang Wu
2006-06-04 9:07 ` Andrew Morton
2006-06-04 9:25 ` Arjan van de Ven
2006-06-05 1:17 ` Voluspa
2006-06-05 8:00 ` Arjan van de Ven
2006-06-06 2:26 ` Fengguang Wu
2006-06-06 2:26 ` Fengguang Wu
2006-06-08 7:31 ` Voluspa
2006-06-08 7:57 ` Fengguang Wu
2006-06-08 7:57 ` Fengguang Wu
2006-06-06 2:57 ` Fengguang Wu
2006-06-06 2:57 ` Fengguang Wu
2006-06-08 7:43 ` Voluspa
2006-06-08 8:13 ` Fengguang Wu
2006-06-08 8:13 ` Fengguang Wu
2006-06-08 8:28 ` Voluspa
2006-06-08 8:50 ` Fengguang Wu
2006-06-08 8:50 ` Fengguang Wu
2006-06-08 10:04 ` Voluspa
2006-06-04 12:13 ` [PATCH] readahead: call scheme - fix fastcall readahead_cache_hit() Fengguang Wu
2006-06-04 12:13 ` Fengguang Wu
2006-05-29 19:44 Adaptive Readahead V14 - statistics question Valdis.Kletnieks
2006-05-30 0:37 ` Wu Fengguang
2006-05-30 0:37 ` Wu Fengguang
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