On Wed, 2004-01-07 at 21:00, Castelhano, Dan wrote: > I seem to be unable to make the hyper-threading functionality of my Pentium > 4 3.2ghz processor work. I've searched google and redhat/fedora list > archives and haven't found a similar post to this problem, so I have no idea > what is wrong. > > *This is an HP system, with the latest BIOS > *Hyper-threading is enabled in bios > *Added acpismp=force to my grub boot line (kernel /vmlinuz-2.4.20-28.7smp ro > root=/dev/hda7 hdc=ide-scsi acpismp=force) - saw a blub somewhere on the net > to add this to make it work, although it seems to do nothing in my case. > *Applied every single errata update redhat has for 7.3 > *Using redhat kernel: kernel-smp-2.4.20-28.7 (uname -a: Linux --- > 2.4.20-28.7smp #1 SMP Thu Dec 18 11:18:31 EST 2003 i686 unknown) HT support isn't in that kernel. You'll need the Fedora kernel. (or mainline 2.4.21 or above) > >From my readings and previous experience with the p3 hyperthreaded xeons, There are no HT P3's. Hyperthreading is something exclusively for P4's. > Side note: when I was setting up this system, the redhat installer installed > the smp kernel so it must see something for it to have picked the smp > kernel, otherwise it would have picked the base non-smp kernel...right? so > why isn't it reporting anything about a 2nd logical proc? The installer saw the BIOS tables describing the 2nd processor. > Does anyone have any other ideas of what I can check/change to make > hyper-threading work on this p4? Is anyone running fedora with this type of > chip and seeing the 2 logical processors (unlike me)? Upgrade is really the easiest option. Dave
