From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre DERUMIER Subject: Re: speed decrease since firefly,giant,hammer the 2nd try Date: Wed, 11 Feb 2015 07:04:24 +0100 (CET) Message-ID: <219811534.358960.1423634664783.JavaMail.zimbra@oxygem.tv> References: <54DA541E.9000608@profihost.ag> <54DA578F.3000900@redhat.com> <54DA5853.3070504@profihost.ag> <54DA5E9F.3060305@redhat.com> <54DA6904.6000305@profihost.ag> <54DA6BB9.7000306@redhat.com> <54DA7404.4060201@profihost.ag> <54DA7A3F.6070009@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from mailpro.odiso.net ([89.248.209.98]:53057 "EHLO mailpro.odiso.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750906AbbBKGE0 convert rfc822-to-8bit (ORCPT ); Wed, 11 Feb 2015 01:04:26 -0500 In-Reply-To: <764258391.358931.1423634637318.JavaMail.zimbra@oxygem.tv> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Mark Nelson Cc: Stefan Priebe , ceph-devel >=20 > mhm i installed librbd1-dbg and librados2-dbg - but the output still=20 > looks useless to me. Should i upload it somewhere?=20 >>Meh, if it's all just symbols it's probably not that helpful.=20 Last Time I have done perf, even with all debug packages (ceph debug pa= ckage, kernel debug, libc6 debug package,..) I have remaining unresolved symbols Sage Have run my perf report through c++filt, to have missing symbols. see here: http://article.gmane.org/gmane.comp.file-systems.ceph.devel/22089/match= =3Dclient+cpu+usage+kbrd+vs+librbd+perf+report ----- Mail original ----- De: "Mark Nelson" =C3=80: "Stefan Priebe" , "ceph-devel" Envoy=C3=A9: Mardi 10 F=C3=A9vrier 2015 22:38:07 Objet: Re: speed decrease since firefly,giant,hammer the 2nd try On 02/10/2015 03:11 PM, Stefan Priebe wrote:=20 >=20 > mhm i installed librbd1-dbg and librados2-dbg - but the output still=20 > looks useless to me. Should i upload it somewhere?=20 Meh, if it's all just symbols it's probably not that helpful.=20 I've summarized your results here:=20 1 concurrent 4k write (libaio, direct=3D1, iodepth=3D1)=20 IOPS Latency=20 wb on wb off wb on wb off=20 dumpling 10870 536 ~100us ~2ms=20 firefly 10350 525 ~100us ~2ms=20 So in single op tests dumpling and firefly are far closer. Now let's=20 see each of these cases with iodepth=3D32 (still 1 thread for now).=20 Mark=20 >=20 > Stefan=20 > --=20 > To unsubscribe from this list: send the line "unsubscribe ceph-devel"= in=20 > the body of a message to majordomo@vger.kernel.org=20 > More majordomo info at http://vger.kernel.org/majordomo-info.html=20 --=20 To unsubscribe from this list: send the line "unsubscribe ceph-devel" i= n=20 the body of a message to majordomo@vger.kernel.org=20 More majordomo info at http://vger.kernel.org/majordomo-info.html=20 -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html