From mboxrd@z Thu Jan 1 00:00:00 1970 From: Alexandre DERUMIER Subject: Re: ceph-osd cpu usage Date: Thu, 15 Nov 2012 12:18:21 +0100 (CET) Message-ID: <7840e3d1-17b2-4618-ae1f-ff3dbdff71f6@mailpro> References: <50A4CA65.2030508@profihost.ag> 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]:46727 "EHLO mailpro.odiso.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1423250Ab2KOLSw convert rfc822-to-8bit (ORCPT ); Thu, 15 Nov 2012 06:18:52 -0500 In-Reply-To: <50A4CA65.2030508@profihost.ag> Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Stefan Priebe - Profihost AG Cc: ceph-devel@vger.kernel.org cpu usage is same for read and write ? ----- Mail original -----=20 De: "Stefan Priebe - Profihost AG" =20 =C3=80: ceph-devel@vger.kernel.org=20 Envoy=C3=A9: Jeudi 15 Novembre 2012 11:56:37=20 Objet: ceph-osd cpu usage=20 Hello list,=20 my main problem right now is that ceph does not scale for me (more vms=20 using rbd). It does not scale as the ceph-osd is using all my CPU core=20 all the time (8 cores) with just 4 SSDs. The SSDs are far away from=20 being loaded.=20 What is the best way to find out what the ceph-osd process is doing all= =20 the time?=20 A gperf graph is attached.=20 Greets,=20 Stefan=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