From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stefan Priebe Subject: Re: [ceph-users] Why is librbd1 / librados2 from Firefly 20% slower than the one from dumpling? Date: Wed, 02 Jul 2014 21:44:06 +0200 Message-ID: <53B46106.7050306@profihost.ag> References: <539B11C4.1010400@profihost.ag> <53AD1411.101@profihost.ag> <53B40292.2000108@profihost.ag> <53B40526.7080907@profihost.ag> <53B456E3.1060909@profihost.ag> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-ph.de-nserver.de ([85.158.179.214]:51094 "EHLO mail-ph.de-nserver.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754511AbaGBToG (ORCPT ); Wed, 2 Jul 2014 15:44:06 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Gregory Farnum Cc: Haomai Wang , "ceph-devel@vger.kernel.org" , ceph-users Hi Greg, Am 02.07.2014 21:36, schrieb Gregory Farnum: > On Wed, Jul 2, 2014 at 12:00 PM, Stefan Priebe wrote: >> >> Am 02.07.2014 16:00, schrieb Gregory Farnum: >> >>> Yeah, it's fighting for attention with a lot of other urgent stuff. :( >>> >>> Anyway, even if you can't look up any details or reproduce at this >>> time, I'm sure you know what shape the cluster was (number of OSDs, >>> running on SSDs or hard drives, etc), and that would be useful >>> guidance. :) >> >> >> Sure >> >> Number of OSDs: 24 >> Each OSD has an SSD capable of doing tested with fio before installing ceph >> (70.000 iop/s 4k write, 580MB/s seq. write 1MB blocks) >> >> Single Xeon E5-1620 v2 @ 3.70GHz >> >> 48GB RAM > > Awesome, thanks. > > I went through the changelogs on the librados/, osdc/, and msg/ > directories to see if I could find any likely change candidates > between Dumpling and Firefly and couldn't see any issues. :( But I > suspect that the sharding changes coming will more than make up the > difference, so you might want to plan on checking that out when it > arrives, even if you don't want to deploy it to production.n To which changes do you refer? Will they be part or backported of/to firefly? > -Greg > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >