From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: [patch 1/6] mm: bdi: tweak task dirty penalty Date: Wed, 30 Jan 2008 16:13:52 -0800 Message-ID: <20080130161352.4dae48e3.akpm@linux-foundation.org> References: <20080129154900.145303789@szeredi.hu> <20080129154947.110268504@szeredi.hu> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: a.p.zijlstra@chello.nl, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org To: Miklos Szeredi Return-path: Received: from smtp2.linux-foundation.org ([207.189.120.14]:47259 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753185AbYAaAOH (ORCPT ); Wed, 30 Jan 2008 19:14:07 -0500 In-Reply-To: <20080129154947.110268504@szeredi.hu> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Tue, 29 Jan 2008 16:49:01 +0100 Miklos Szeredi wrote: > Penalizing heavy dirtiers with 1/8-th the total dirty limit might be rather > excessive on large memory machines. Use sqrt to scale it sub-linearly. Then again, it might not be. I'll skip this one. Please resend if/when it is proven to be a net benefit across a broad range of workloads. And stuff like that.