CentOS - Jul 2009 - Upgrade 4.7 > 5.3 poorer 'performance'

Hi

During a test upgrade of a number of hosts in a pool i have found that 
exactly the same JVM based app runs more efficiently on the 4.7 systems 
than it does on the 5.3 on identical hardware.

Specifically the apps seems to exhibit about 10% more 'load' on the 
CPU's for the same workload - before i start digging deep has anyone 
seen anything similar ?

thanks

On Thu, Jul 2, 2009 at 4:57 AM, Tom Brown<tom at ng23.net>
wrote:
> Hi
>
> During a test upgrade of a number of hosts in a pool i have found that
> exactly the same JVM based app runs more efficiently on the 4.7 systems
> than it does on the 5.3 on identical hardware.
>
> Specifically the apps seems to exhibit about 10% more 'load' on the
> CPU's for the same workload - before i start digging deep has anyone
> seen anything similar ?
Which JDK version, and how are you measuring load?

- Ryan
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