From mboxrd@z Thu Jan 1 00:00:00 1970 From: "hjwsm1989-gmail" Subject: set mds message priority to MSG_PRIO_HIGH Date: Sat, 19 Oct 2013 20:58:46 +0800 Message-ID: <004001ceccca$f7e0fba0$e7a2f2e0$@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mail-pa0-f48.google.com ([209.85.220.48]:39952 "EHLO mail-pa0-f48.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752052Ab3JSM67 (ORCPT ); Sat, 19 Oct 2013 08:58:59 -0400 Received: by mail-pa0-f48.google.com with SMTP id bj1so5813474pad.7 for ; Sat, 19 Oct 2013 05:58:59 -0700 (PDT) Received: from huangjun ([111.173.83.95]) by mx.google.com with ESMTPSA id ry4sm11629046pab.4.2013.10.19.05.58.54 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Sat, 19 Oct 2013 05:58:57 -0700 (PDT) Content-Language: zh-cn Sender: ceph-devel-owner@vger.kernel.org List-ID: To: ceph-devel@vger.kernel.org Hi, I'm testing ceph with samba. I have 20 OSD nodes on 4 hosts dy01:1MON, 5 OSDs, 1 samba server dy02: 1MDS, 5OSDs, 1 samba server dy03: 5 OSDs, 1 samba server dy04:5 OSDs, 1 samba server every samba server exports the ceph kclient mount point. When I set 3 samba clients connect to a samba server(dy01), and each write a single 18GB file, gets 110MB/s speed each. But when I use 4 clients, the cluster will report 'slow request' msg, and this time I list files in samba client dir, it gets stuck. And the test tool reports frame losing. For the list operation related to MDS, I think the MDS op messages should have higher priority than clients op. Have I understood correctly? thanks