-----Original Message----- From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf Of fred smith Sent: den 9 mars 2012 07:17 To: CentOS mailing list Subject: Re: [CentOS] HT (Hyper Threading) on CentOS 5.5 On Fri, Mar 09, 2012 at 11:15:29AM +0530, Kaushal Shriyan wrote: > Hi, > > Do we need HT enabled on CentOS release 5.5 (Final) and Kernel Version :- > 2.6.18-194.el5 I don't think it harms anything to have it enabled, and there may be some small performance gains in some cases. I'd leave it on. ============================= What are some of the cases it would be practical/best to have it off? I know there might be some negative performance issues with certain applications, but would you notice it in day-to-day use? -- /Sorin