> > The "HT" isn't a full/complete cpu (dual core cpus are in the process > of being developed by Intel (and others)). So enabling/disabling > Hype(r)Threading (it's mostly "hype" by Intel) is not the same > as actually having a 2nd cpu. > > But of course you knew that already :-) >
This is totally consistant with everything I know about HT and Linux. The cpu scheduler in the 2.4 series kernel is not HT "aware". Thus the processor afinity is incorrectly treated like a traditional second CPU, which HT is not. This has the effect of clobbering the CPU cache and net result is EVERYTHING runs slower. The 2.6 kernel is fully HT enabled and knows exactly how to treat the HT enabled CPU's. If you happen to be running on RedHat Advanced Server3, their enterprise kernel (2.4.x) has backported features of 2.6 including the vm and the cpu scheduler. So, enabling HT should provide some boost again. I hope my understanding is accurate and that I'm not just spreading FUD. But, the results of all my performace testing support my statement. -christoph ------------------------------------------------------- This SF.Net email sponsored by Black Hat Briefings & Training. Attend Black Hat Briefings & Training, Las Vegas July 24-29 - digital self defense, top technical experts, no vendor pitches, unmatched networking opportunities. Visit www.blackhat.com _______________________________________________ Mjpeg-users mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/mjpeg-users
