> -----Original Message----- > From: Munir Nassar [mailto:nassarmu at redconcepts.net] > Sent: Thursday, November 20, 2003 7:24 PM > To: TCLUG Mailing List > Subject: Re: [TCLUG] Testing SMP Kernel > > > On Thu, 20 Nov 2003, Kent Schumacher wrote: > > > Shouldn't you be seeing *four* processors? I do I on my > dual Xeon box using gkrellm and gtop... > > That would only be if you have the P4 Xeon which has HT > > HT is hyperthreading which basically makes it look like you have 2 > processors when you only have one. > > i am not well read on the subject but i am sure intel.com has > plenty of > propaganda on the subject. I was at joint Microsoft/Unisys vldb conference and they stated that hyperthreading in the best circumstances gives about a 20% performance boost. What gets really interesting is that some software is licensed per processor, well what do you pay when your machine says 4 but you really only have 2. I think just about all vendors have backed away from trying to collect for 4 now. _______________________________________________ TCLUG Mailing List - Minneapolis/St. Paul, Minnesota http://www.mn-linux.org tclug-list at mn-linux.org https://mailman.real-time.com/mailman/listinfo/tclug-list