Henrique, Please try the test again with a larger block size to see how that changes the results. -----Original Message----- From: gluster-users-bounces at gluster.org [mailto:gluster-users-bounces at gluster.org] On Behalf Of Chris Layton Sent: Friday, September 10, 2010 3:32 PM To: Henrique Haas Cc: gluster-users at gluster.org Subject: Re: GlusterFS Performance gigE I agree something is wrong. Here is what I am getting on a more ISP grade setup (but no SAN sadly) also with no Ethernet tuning : dd if=/dev/zero of=/usr/local/sites/test.test bs=1M count=64 64+0 records in 64+0 records out 67108864 bytes (67 MB) copied, 0.754847 seconds, 88.9 MB/s dd if=/dev/zero of=/usr/local/sites/test.test bs=1M count=1024 1024+0 records in 1024+0 records out 1073741824 bytes (1.1 GB) copied, 13.9273 seconds, 77.1 MB/s I did some other testing using tiobench, iozone, and dt with similar (albeit MUCH more detailed) results. The setup above is using cluster/replicate between 2 remote bricks (raid10 SAS 15K). Also this was run during a low load window while there was still some light load on the webservers so this would be slightly higher if I could stop our webservers but that isn't a option for a few more days at least. Also we use lsycnd (inotify based) to sync changed files off to remote backup servers to overcome the limits on wirespeed with gluster (our remote nodes are 100Mb) so that has some brick/disk overhead as well. One thing you could do to help troubleshoot is run a speed test and use atop or sar tools to debug and also get a snapshot of the test for review. -- Chris Layton Senior Systems Engineer WorldSpice Technologies chrisl at worldspice.net 901-843-9300 On Fri, 2010-09-10 at 13:16 -0300, Henrique Haas wrote: > Hello people, > > For those have *GlusterFS running over GigE, what is the throughput you have > for write data?* > I have 3 nodes, running GNU/Linux Ubuntu Server 10.04, GlusterFS 3.0.2. > The network is GigE, dedicated switch. > > I am experiencing maximum 2 MB/sec running a "dd" over a client mount point. > > Thank you very much > > _______________________________________________ > Gluster-users mailing list > Gluster-users at gluster.org > http://gluster.org/cgi-bin/mailman/listinfo/gluster-users _______________________________________________ Gluster-users mailing list Gluster-users at gluster.org http://gluster.org/cgi-bin/mailman/listinfo/gluster-users
