I realise that this is slightly a JVM dependant question but doe anyone have any views on using Hyperthreading on Xeon processors and whether it will affect performance or not? As far as I can ascertain, hyperthreading essentially splits the processor into two threads internally which appear to the OS as two processors (so on a dual system you get four). This allows for performance equivalent of a dual processor system when you only have one proc, etc etc. Will this help or hinder Tomcat? Ive heard many people saying essentially it's better left turned off unless you have a very specific application that might use it (eg Photoshop), but with Tomcat being multi-threaded I cant see why it wouldnt benefit. Anyone know anything a bit more definative (currently Im using Sun's 141_01 and 02 JVM in production). thanks Pete
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