Seems to me that your two Xeon processors are of the Pentium 4 variety. These utilize the hyper-threading that Intel has built into the procs. If you want, you can recompile your kernel without hyper-threading support - it will only see the two physical processors. Some BIOS's have the ability to turn off hyper-threading, so that might be another approach. Personally, I would leave the hyper-threading alone. Performance will be hindered otherwise. I believe you're problem is elsewhere. Mike Webster Systems Administrator Intercosmos Media Group, Inc. On Thu, 2003-12-04 at 19:53, Yeak Nai Siew wrote: > Hi all, > > I installed Fedora Core 1 on IBM eServer with the following spec: > - 1U > - 2 x 36 GB Hardware RAID 1 (LSI and driver used is mpt) > - 2 x 2.8 Ghz Xeon > - 4 x 1 GB RAM > > Right after install and logged in, the Gnome desktop seems unstable. > Clicking the menu will occasionally paused for 1 or 2 seconds. I left > it idle and not touching it, but it crashed automatically. Message log > shows gdm-binary having problem. Not sure if it is so. > > Then I run "top" and I notice it shows 4 CPU. I know this server only > have 2. None of this 4 CPU shows any status. Idle is "0%". The status > is wrong. > > Then I tried RHEL AS 3, looks more stable, but the "top" also show 4 > CPU. This time it shows the figure. Idle is around 98% to 100%. But the > status run across all the 4 CPU (the physical CPU is only 2...) > > Why seeing 4, not 2? Is there a way to pass kernel parameter during > bootup to force it to use 2 only? > > Thanks. >
