Kernel 2.4.19 seems to behave nicely with hyperthreading. If you use a kernel prior to 2.4.18 you will most likely encounter many problems. We ran into a lot of problems at my company during the summer when we received our first xeon server. Kernel 2.4.16 was unusable with hyperthreading enabled. It would often lock up and yielded horrible, almost unusable performance.
-----Original Message----- From: Rob Saul [mailto:[EMAIL PROTECTED]] Sent: Thursday, December 19, 2002 1:41 AM To: [EMAIL PROTECTED] Subject: Re: benefits of a Xeon? On Wednesday, December 18, 2002, at 07:34 PM, Ben Russo wrote: > I've also heard that the recent Xeon's have that "hyperthreading" > feature... Supposedly makes threaded programs and heavy multitasking > work better. I saw some benchmarks on a website that mentioned > that for specific circumstances, with hyperthreading enabled, there > was up to a 30% increase in performance on the same hardware as > compared with no hyperthreading. intel seems to think Linux still needs optimizing for Hyper-Threading. (see http://www.intel.com/support/platform/ht/os.htm) If this is so it would be interesting to see a fully optimized Linux vs one that isn't. Anecdotal note: where I work we have a dual Xeon system that would not behave until Hyper-Threading support was disabled. HT is not necessarily the root of the problem, mind you. Disabling it got the system stable, though, and right now nobody has spare cycles to poke at the system extensively. ~Rob -- Rob Saul.|.wyrdATtriskelionDASHnovaDOTcom.|.prohibitions void where offered Programming is an art form that fights back. | de recta non tolerandum sunt -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list -- redhat-list mailing list unsubscribe mailto:[EMAIL PROTECTED]?subject=unsubscribe https://listman.redhat.com/mailman/listinfo/redhat-list
