From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastian Parschauer Subject: Re: [RFC PATCH 0/4] md/mdadm: introduce request function mode support Date: Tue, 17 Jun 2014 15:20:53 +0200 Message-ID: <53A040B5.5050008@profitbricks.com> References: <20140602202050.14903534@notabene.brown> <1401901802-16296-1-git-send-email-sebastian.riemer@profitbricks.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1401901802-16296-1-git-send-email-sebastian.riemer@profitbricks.com> Sender: linux-raid-owner@vger.kernel.org To: neilb@suse.de Cc: linux-raid@vger.kernel.org, Sebastian Parschauer List-Id: linux-raid.ids Hi Neil, have you already had the time to look at these patches? We have this in production with cfq scheduler already on two storage servers and customers noticed a huge performance boost. Also our monitoring shows higher and smoother iop numbers. Cheers, Sebastian On 04.06.2014 19:09, Sebastian Parschauer wrote: > Patches apply to linux v3.15-rc8 and mdadm master commit 8a3544f895. > > Florian-Ewald Mueller (3): > md: complete bio accounting and add io_latency extension > md: introduce request function mode support > md: handle IO latency accounting in rqfn mode > > Sebastian Parschauer (1): > mdadm: introduce '--use-requestfn' create/assembly option >