From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fyodor Ustinov Subject: Re: read and write speed. Date: Tue, 31 May 2011 18:05:59 +0300 Message-ID: <4DE503D7.8080703@ufm.su> References: <4DE41F34.8020504@ufm.su> <4DE4BC76.1080906@ufm.su> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail.ufm.su ([77.120.103.19]:39835 "EHLO mail.ufm.su" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751055Ab1EaPGB (ORCPT ); Tue, 31 May 2011 11:06:01 -0400 In-Reply-To: Sender: ceph-devel-owner@vger.kernel.org List-ID: To: Gregory Farnum Cc: ceph-devel@vger.kernel.org On 05/31/2011 05:51 PM, Gregory Farnum wrote: > Sage created an issue to track this: > http://tracker.newdream.net/issues/1122 > > Based on the differences between the FUSE and kernel clients, it's > probably just readahead settings. :) > -Greg I'm not sure. rsize 10 times more than the default: root@gate0:~# mount -t ceph -o rsize=5242880 10.5.51.230:/ /mnt root@gate0:~# cd /mnt/ root@gate0:/mnt# dd if=bbb of=/dev/null bs=1024000 10000+0 records in 10000+0 records out 10240000000 bytes (10 GB) copied, 126.168 s, 81.2 MB/s root@gate0:/mnt# cd root@gate0:~# umount /mnt rsize 100 times more root@gate0:~# mount -t ceph -o rsize=52428800 10.5.51.230:/ /mnt root@gate0:~# cd /mnt/ root@gate0:/mnt# dd if=bbb of=/dev/null bs=1024000 10000+0 records in 10000+0 records out 10240000000 bytes (10 GB) copied, 123.432 s, 83.0 MB/s root@gate0:/mnt# cd root@gate0:~# umount /mnt cfuse root@gate0:~# cfuse -m 10.5.51.230:/ /mnt ** WARNING: Ceph is still under development. Any feedback can be directed ** ** at ceph-devel@vger.kernel.org or http://ceph.newdream.net/. ** cfuse[1686]: starting ceph client cfuse[1686]: starting fuse root@gate0:~# cd /mnt root@gate0:/mnt# dd if=bbb of=/dev/null bs=1024000 10000+0 records in 10000+0 records out 10240000000 bytes (10 GB) copied, 93.3285 s, 110 MB/s root@gate0:/mnt# WBR, Fyodor.