linux-kernel - Re: RFC: dirty

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Message-ID: <20100520171230.GA6910@fancy-poultry.org>
Date:	Thu, 20 May 2010 19:12:30 +0200
From:	Heinz Diehl <htd@...cy-poultry.org>
To:	linux-kernel@...r.kernel.org
Subject: Re: RFC: dirty_ratio back to 40%

On 20.05.2010, Richard Kennedy wrote: 

> But it's interesting that you find lowering the dirty_ratio helpful. Do
> you have any benchmark results you can share?

No, unfortunately not. My machine is mainly designed to run squid,
and it suffered from very long stalls. After posting the problem, I was
advised to read about vm.dirty_ratio and vm.dirty_background_ratio, and
lower these. I tried several combinations, and with 4/2, the stalls
vanished completely.

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