From mboxrd@z Thu Jan 1 00:00:00 1970 From: Olivier Bonvalet Subject: More writes on filestore than on journal ? Date: Mon, 23 Mar 2015 14:21:31 +0100 Message-ID: <1427116891.16770.25.camel@daevel.fr> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from licorne.daevel.fr ([178.32.94.222]:58444 "EHLO licorne.daevel.fr" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753009AbbCWNVf (ORCPT ); Mon, 23 Mar 2015 09:21:35 -0400 Sender: ceph-devel-owner@vger.kernel.org List-ID: To: ceph-users@ceph.com Cc: ceph-devel@vger.kernel.org Hi, I'm still trying to find why there is much more write operations on filestore since Emperor/Firefly than from Dumpling. So, I add monitoring of all perf counters values from OSD. =46rom what I see : =C2=ABfilestore.ops=C2=BB reports an average of 78 = operations per seconds. But, block device monitoring reports an average of 113 operations per seconds (+45%). please thoses 2 graphs : - https://daevel.fr/img/firefly/osd-70.filestore-ops.png - https://daevel.fr/img/firefly/osd-70.sda-ops.png Do you see what can explain this difference ? (this OSD use XFS) Thanks, Olivier -- 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