[Gluster-users] Performance question

Arnold Krille arnold at arnoldarts.de
Wed Feb 15 22:06:05 UTC 2012

On Monday 13 February 2012 06:33:47 you wrote:
>   I would love to see the numbers you get for dbench....as I have been doing
> exstensive testing with iozone and would like to be able to compare numbers
> to see that we are coming to the same conclusions.  If you would like to
> see the basics of what I have been testing please look at
> http://community.gluster.com and look for the performance question.  You
> can add your information there as well so we have it documented for easy
> look up by others.  If there is anything I can to do help out with your
> testing please let me know.

@Bryan and Brian:
Due to time-management reasons I only got to do the tests yesterday. And it 
proved to be the same as I have encountered before in physics:
A quick test is done quite fast. But when you look at the preliminary results 
and evaluate a real test-program, you have to do it right in the first place. 
My results from yesterday evening are incomplete and seem to have a lot of 
unreproducible artifacts. What was interesting is that pure-linux-nfs from 
node2 to node1 had roughly the same results as glusterfs on node2 to a single-
brick volume on node1...

I will do some real tests on the cluster at work. The same cluster I just 
free'd from using gfs2:-)

So the comparisons would be:
 1. single local disk
 2. pure nfs between the nodes
 3.1 glusterfs (aka fuse-mount) with single-brick volumes across network
 3.2 glusterfs with dual-brick/dual-node distributed volume
 3.3 glusterfs with dual-brick/dual-node replicated volume
 4.X same as 3.x but with glusterfs-mount from node3
 5.X same as 3.x but with nfs-mount from node3
 6. (bonus) 3x2 three nodes, two bricks per node, replicate2, distributed big 
volume mounted via glusterfs on one node. + mounted on all nodes. + mounted on 
one virtual machine via glusterfs and nfs.

All of that with the same dbench-call and a reasonable test-time. At least 
this time my boss won't complain that I introduce a new technology without 
first presenting a white-paper. ;-)

Do you have more inputs for the test-regime?

Have fun,

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