From: Theodore Tso Subject: Re: [PATCH] imporve jbd2 fsync batching Date: Wed, 5 Nov 2008 19:27:27 -0500 Message-ID: <20081106002727.GB8168@mit.edu> References: <20081104161024.GC28058@unused.rdu.redhat.com> <20081105231012.GJ3184@webber.adilger.int> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Josef Bacik , linux-ext4@vger.kernel.org To: Andreas Dilger Return-path: Received: from www.church-of-our-saviour.org ([69.25.196.31]:54520 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752044AbYKFA1a (ORCPT ); Wed, 5 Nov 2008 19:27:30 -0500 Content-Disposition: inline In-Reply-To: <20081105231012.GJ3184@webber.adilger.int> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Nov 05, 2008 at 04:10:12PM -0700, Andreas Dilger wrote: > There was no reply to my previous comments about making the maximum sleep > time be a fixed value (e.g. 15ms) instead of having it arbitrarily based > on the jiffies value, which may change between 1ms and 10ms. I know the whole point is to make it be self-tuning, but I wonder if we should have some knobs to control the min and max sleep times. - Ted