 Solution: Poor performance on CentOS 4.3
Found the solution to this problem. Turns out that it was a CentOS 4.3 kernel problem (or bug).
The latest Kernel update (2.6.9-42.0.2.EL) fixed the problem. Now the SAME server does not use any swap at all and is responding much quicker.
So there appears to be a problem with CentOS 4.3 and the default kernel, 2.6.9-34.0.2.EL which causes performance and swap issues. This may affect just Java applications or Java/VMWare guest OS - who knows.
Just very glad that it's been fixed.
So for anyone else running CentOS 4.3 and experiencing terrible performance and high swap usage, I suggest you run update and get the latest kernel.
Cheers!
Last edited by greenrenault; 09-05-2006 at 04:19 AM..
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