hey there everyone,

I wanted to ask whether someone of you also experienced problems with redhat 9 detecting the 2 virtual cpus on a hyperthreading system. I got an Asus p4t533 mobo + p4 3.06ghz (533mht fsb), and redhat seems to detect the 2 virt. cpus properly, since it chooses and installs the smp kernel, however, after booting into it after installation, it only reports having one cpu (top, gtop, /proc/cpuinfo etc....).


windows xp on the same system detects the 2 virtual cpus just fine, and so does a suse 8.1 installation :\


I tried upgrading the kernel... but no change



any ideas how i could fix that?

cheers and thanks,
-J

kernel has to support it... did you make sure the redhat kernel supports HT? XP has support for HT and im assuming SuSe did too, since it detected it.

I just set up two new intel 3.0GHz machines with the 800MHz system bus and a MSI i865P (i was pretty mad that I didn't get the i865PE) with redhat 9.0. I'm currently running with the 2.4.20-19.9smp kernel, and it detected the 2 virtual cpus without a problem.

well, I recommend to things
1) try a custom kernel, I know hyperthreading is not in the 2 latest kernels (2.4.21 and 2.6.0-test3) however enabling smp is supposed to make it work. also I do not have hyperthreading but plan to get it, I am not sure if linux is even supposed to see it as 2 cpu's, yuo can try doing a dual kernel boot option, boot a regualr and an smp and run an smp capeable benchmark in both and see if it works.
2) I would ditch redhat, I ama slack user but an emergancy forced me to get redhat while away from an internet connection, it has no mp3 support (alright if you have an internet connection) and I also noticed a lot of incompatabilities. also redhat has a lot of proprietary stuff in it. and last but far from least, it is owned by aol-time-warner