From: Matt Heler <lkml@lpbproductions.com>
To: "Jon Smirl" <jonsmirl@gmail.com>
Cc: "Wu Fengguang" <wfg@mail.ustc.edu.cn>, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 00/23] Adaptive read-ahead V11
Date: Mon, 27 Mar 2006 16:38:33 -0500 [thread overview]
Message-ID: <200603271638.34260.lkml@lpbproductions.com> (raw)
In-Reply-To: <9e4733910603181910p21117f3anc107673e31f6352b@mail.gmail.com>
We use lighttpd on our servers, and I can say with 100% that this problem
happens alot. Because of this , we were forced to use to userspace mechanism
that the lighttpd author made to cirvumvent this issue. However with this
patch, I'm unable to produce any of the problems we had experienced before.
IO-Wait has dropped significantly from 80% to 20%.
I'd be happy to send over some benchmarks if need be.
Matt Heler
On Saturday 18 March 2006 10:10 pm, Jon Smirl wrote:
> This is probably a readahead problem. The lighttpd people that are
> encountering this problem are not regular lkml readers.
>
> http://bugzilla.kernel.org/show_bug.cgi?id=5949
>
> --
> Jon Smirl
> jonsmirl@gmail.com
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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next prev parent reply other threads:[~2006-03-27 21:38 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-19 2:34 Wu Fengguang
2006-03-19 2:34 ` [PATCH 01/23] readahead: kconfig options Wu Fengguang
2006-03-19 2:34 ` [PATCH 02/23] radixtree: look-aside cache Wu Fengguang
2006-03-20 16:01 ` Christoph Lameter
2006-03-21 2:19 ` Wu Fengguang
2006-03-19 2:34 ` [PATCH 03/23] radixtree: hole scanning functions Wu Fengguang
2006-03-19 2:34 ` [PATCH 04/23] readahead: page flag PG_readahead Wu Fengguang
2006-03-19 2:34 ` [PATCH 05/23] readahead: refactor do_generic_mapping_read() Wu Fengguang
2006-03-19 2:34 ` [PATCH 06/23] readahead: refactor __do_page_cache_readahead() Wu Fengguang
2006-03-19 2:34 ` [PATCH 07/23] readahead: insert cond_resched() calls Wu Fengguang
2006-03-19 3:50 ` Lee Revell
2006-03-19 5:32 ` Wu Fengguang
2006-03-20 13:31 ` Wu Fengguang
2006-03-19 2:34 ` [PATCH 08/23] readahead: common macros Wu Fengguang
2006-03-19 2:34 ` [PATCH 09/23] readahead: events accounting Wu Fengguang
2006-03-19 2:34 ` [PATCH 10/23] readahead: support functions Wu Fengguang
2006-03-19 2:34 ` [PATCH 11/23] readahead: sysctl parameters Wu Fengguang
2006-03-19 2:34 ` [PATCH 12/23] readahead: min/max sizes Wu Fengguang
2006-03-19 2:34 ` [PATCH 13/23] readahead: page cache aging accounting Wu Fengguang
2006-03-19 2:34 ` [PATCH 14/23] readahead: state based method Wu Fengguang
2006-03-19 2:34 ` [PATCH 15/23] readahead: context " Wu Fengguang
2006-03-19 2:34 ` [PATCH 16/23] readahead: other methods Wu Fengguang
2006-03-19 2:34 ` [PATCH 17/23] readahead: call scheme Wu Fengguang
2006-03-19 2:34 ` [PATCH 18/23] readahead: laptop mode Wu Fengguang
2006-03-19 2:34 ` [PATCH 19/23] readahead: loop case Wu Fengguang
2006-03-19 2:34 ` [PATCH 20/23] readahead: nfsd case Wu Fengguang
2006-03-19 2:34 ` [PATCH 21/23] readahead: debug radix tree new functions Wu Fengguang
2006-03-19 2:34 ` [PATCH 22/23] readahead: debug traces showing accessed file names Wu Fengguang
2006-03-19 2:34 ` [PATCH 23/23] readahead: debug traces showing read patterns Wu Fengguang
2006-03-19 3:10 ` [PATCH 00/23] Adaptive read-ahead V11 Jon Smirl
2006-03-19 3:47 ` Wu Fengguang
2006-03-19 4:10 ` Jon Smirl
2006-03-19 5:09 ` Wu Fengguang
2006-03-19 15:53 ` Jon Smirl
2006-03-20 13:54 ` Wu Fengguang
2006-03-27 21:38 ` Matt Heler [this message]
2006-03-28 3:44 ` Wu Fengguang
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