Yes, i have disabled HT on my machines too, but that is because i dont have any application that use this feature. I dont have Dual core processors, but i think acquire some machines next year. In my case, i have meteorological applications, this is the principal reason. Cheers, R. MIguel On Fri, 11 Nov 2005 09:55:45 -0600, Rhugga Harper wrote > I would disable hyper-threading. We have 24k+ hosts (Mostly 2650's > and 2850's) and saw nothing but problems with hyperthreading on > nearly every distro: RH AS 2.1, 3 and SLES 9. In many cases it > actually inhibited performance. There is a very small niche of > applications that can benefit from hyperthreading. (Our hosts are > mostly oracle rac's, application servers, and other various middle- > tier applications) Note that the problems with hyper-threading > surface under heavy enterprise loads, which of course is where you > would need it. > > Go with AMD and their HypeTransport / dual-core. Much better performance > accross the boards IMHO. > > -rhugga > > On 11/11/05, Mike Ault <mike@xxxxxxx> wrote: > > > > As long as you load the SMP version it should see them. If not there is a > > relink option to turn on hyperthreading for the CPUs. > > > > Mike > > > > -----Original Message----- > > From: redhat-list-bounces@xxxxxxxxxx [mailto: > > redhat-list-bounces@xxxxxxxxxx] > > On Behalf Of Robert > > Sent: Friday, November 11, 2005 10:13 AM > > To: redhat-list@xxxxxxxxxx > > Subject: Hyperthreading/Dual core CPU's > > > > Hi list, > > We have plans to buy HP DL380's and put Redhat AS 4.0, anyone know how the > > Hyperthreading works on Redhat, can we enable it on Redhat? does it see 2 > > CPU's if there is only one CPU board?. > > In Windows 2003 we have enabled Hyperthreading and OS sees 4 CPU's (2 CPU > > boards). > > Thanks in advance > > > > > > > > > > --------------------------------- > > Yahoo! FareChase - Search multiple travel sites in one click. > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list ------------------------------ Richard Miguel San Martin Administrador de Sistemas CPN - SENAMHI Telf. 6141414 Anexo 464 Cel. 98540364 ------------------------------ -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
