From mboxrd@z Thu Jan 1 00:00:00 1970 From: "J. Eric Ivancich" Subject: Re: dm-clock queue Date: Thu, 5 Nov 2015 17:19:21 -0500 Message-ID: <563BD5E9.5060905@redhat.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mx1.redhat.com ([209.132.183.28]:48901 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757062AbbKEWTY (ORCPT ); Thu, 5 Nov 2015 17:19:24 -0500 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Sage Weil , g.marripudi@ssi.samsung.com Cc: mbenjami@redhat.com, sjust@redhat.com, ceph-devel@vger.kernel.org Thank you, Sage. I will contact you in a separate message, Gunna, to better understand your efforts and interests. Eric On 11/04/2015 05:35 PM, Sage Weil wrote: > Hi Gunna, Eric- > > I wanted to make sure you were connected as we've talked to both of you > independently about the new request queue in the OSD to support dm-clock > and I want to make sure our efforts are coordinated. I thnk the first > goal is probably to implement something that works and performs well for > just a few request classes (clients, recovery, scrub, snaptrim). > Eventually we'll also need to determine if/how to do so for a large client > count so that we can do client qos. Just solving the first problem alone > may be a big win, though: we hear lots of complaints about the effect of > recovery on client io. > > Anyway, just wanted to make sure you two were connected and kick off the > conversation. > > sage >