[Linux-cluster] GFS performance

[Mikołaj Radzewicz]

hello,
I'm setting a new GFS cluster on rhel 5.2. It will have 4 nodes with
files for lighttpd servers. The shared disk comes from SAN (FC). I have
some questions following that topic:
- I have two networks - public (1GB) and management (100MB) one. I am
wondering about setting the cluster on privet. The question is if i do
that how it will affect the performance? Or it is no big difference
cause the cluster transfer only locks and 100MB is enough for that purpose.
- how can i tune up my gfs cluster and test if that works? Can smb
advise some good article about tuning.

- how different kernel version on cluster system affect it performance
and stability?

thx
-- 
Mikołaj Radzewicz