I have researched and applied several tweaks to Gluster to improve performance 
but on the vm side, depending on distribution, you can "tweak" the vm for 
better performance on Gluster as well;

yum install tuned.noarch tuned-utils-systemtap.noarch tuned-utils.noarch 
tuned-gtk.noarch -y
(GTK is for a gui if you have one.)

tuned-adm profile virtual-guest

Also, you can increase or decrease cache or swappiness on the host to fit your 
vm's, for workstations or servers. My cache is set to 2048 MB cache and 
swappiness of 10.
Thanks for the help you have given me. 
Eric


This helps RHEL and CentOS machines utilize glusterfs and actually speeds teh 
vm up.
I hope this will help someone. If you want the URL for the article, just ask. 
Also, you can increase or decrease cache or swappiness to fit your vm's, for 
workstations or servers.
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