From mboxrd@z Thu Jan 1 00:00:00 1970 From: madhusudhana Subject: TOO SLOW data write speed and delete.. NEED HELP Date: Tue, 13 Mar 2012 10:39:33 +0000 (UTC) Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Received: from plane.gmane.org ([80.91.229.3]:49152 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1760303Ab2CMKjo (ORCPT ); Tue, 13 Mar 2012 06:39:44 -0400 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1S7P8o-0005cs-JJ for ceph-devel@vger.kernel.org; Tue, 13 Mar 2012 11:39:42 +0100 Received: from 202.164.25.5 ([202.164.25.5]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 13 Mar 2012 11:39:42 +0100 Received: from madhusudhana.u.acharya by 202.164.25.5 with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 13 Mar 2012 11:39:42 +0100 Sender: ceph-devel-owner@vger.kernel.org List-ID: To: ceph-devel@vger.kernel.org Hi all, Can someone PLEASE help me to understand why data copying (simple cp or rsync) is SO slow in CEPH ? And delete command (\rm -rf) for removing a small (175M) directory is taking so much of time. Because of this, i am not able to complete evaluation of ceph using my actual workload. I am hereby requesting all to help me in finding out the reason for slow write/delete in my ceph cluster. I am really trying hard to complete the evaluation with actual workload but not able to copy the data whats required for evaluation to ceph cluster bcz of slow copy. I really appreciate any help on this. Thanks in advance Madhusudhan