Performance degrade

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Hi, I am looking for some help and advice from the community. I am
experiencing a performance degrade on my GlusterFS system after
upgrading from 2.09 to 3.05.

My setup has 2 clients and 2 storage servers configured in a
distributed / replicated setup over TCP Gigabit Ethernet.
My storage servers each has 36 x 1,5 TB SATA disks and a 4 core Intel
I7 processor with 6 GB RAM. I am runnig Ubuntu 9.04 with latest
updates.

My application is mainly a write once / read many app with small and
large files. Now it seems write performance has been degraded.

The GlusterFS servers are showing very high CPU usage. Around 200 %
for the glusterfsd process. RAM usage seems to be very low, only about
148 MB.

Should I be using, or not using, the performance translators I am using?
I need help and advice tuning my setup for better performance and
overall Gluster greatness.

Attached are examples of client and server vol files.

Thanks in advance.


Best regards

Roland Rabben
Founder & CEO Jotta AS
Cell: +47 90 85 85 39
Phone: +47 21 04 29 00
Email: roland at jotta.no


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