Howdy, I haven't gotten around to benchmarking this, although I'm curious. It's not as much a tomcat issue as it is a general JVM performance one. Would you be able to benchmark your system with and without hyperthreading, and hopefully sharing the results with the list?
Yoav Shapira Millennium ChemInformatics >-----Original Message----- >From: [EMAIL PROTECTED] >[mailto:[EMAIL PROTECTED] >Sent: Monday, June 09, 2003 10:34 AM >To: [EMAIL PROTECTED] >Subject: Hyperthreading and performance > >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 > >Kiss Technologies > >http://www.kisstechnologies.co.uk/ > >Please note, we have moved! > >4, Percy Street >London >W1T 1DF > >New permanent phone numbers: > >Phone 020 7692 9922 >Fax 020 7692 9923 This e-mail, including any attachments, is a confidential business communication, and may contain information that is confidential, proprietary and/or privileged. This e-mail is intended only for the individual(s) to whom it is addressed, and may not be saved, copied, printed, disclosed or used by anyone else. If you are not the(an) intended recipient, please immediately delete this e-mail from your computer system and notify the sender. Thank you. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
