Performance and Performance Testing?

What does this suggest:

http://www.nabble.com/XEN%2BOpenSSI%2C-big-performace-overhead--td5643723.html#a5643723
Aggregating as a big system and partitioning will create big
performance overhead and is inefficient.  Instead you can create
multiple partitions with SSI interface itself if you work on
hot-plug of systems which allows you to dynamically re-configure your
partitions"  

That I should simply create multiple partions, or what does it mean with SSI
interface?And to what is hot plug up systems which allows you to dynamically
re-configure your partions?

I comfortably didn't understand this thread though it should prove useful:

http://www.nabble.com/Performance-Tests-td2013120.html#a2013120

I want to know ways are there to monitor & test performance of OpenSSI,
especially load balancing.
-- 
View this message in context: http://www.nabble.com/Performance-and-Performance-Testing--tp25846714p25846714.html
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