From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roman Mamedov Subject: Re: disk initialize priority Date: Thu, 13 Apr 2017 15:05:14 +0500 Message-ID: <20170413150514.6b92d81f@natsu> References: <43e44c4b-37d6-9734-b323-5b432ef27d52@thelounge.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Reindl Harald Cc: d tbsky , linux-raid@vger.kernel.org List-Id: linux-raid.ids On Thu, 13 Apr 2017 11:47:29 +0200 Reindl Harald wrote: > and? > > you said it is at 200000 > i showed you how to reduce it to 50000 or whatever you want The point is that this should automatically adjust between 1000 and 200000 (on default settings) according to other IO in the system. But since April 2015 this automatic tuning got broken and has worsened significantly for some scenarios. The solution should be not that "well you're SOL and now always have to hand-tune it", but to keep reporting your experience and try out the proposed fixes so the prior automated adjustment is reimplemented, or baring that, to revert the behavior change on your systems (already tried that just now on my kernel build, it still reverts cleanly). -- With respect, Roman