Re: CPU's and system monitor
From: John Moran (jtmo3_at_sbcglobal.net)
Date: Wed, 18 May 2005 08:45:44 -0500 To: firstname.lastname@example.org
>On 19:14, Tue 17 May 05, John T. Moran wrote:
>>I installed Debian sarge today and the install went good. I couldn't get
>>the system to boot with the 2.6.8 smp kernel so I changed the repository
>>to unstable and installed the 184.108.40.206 kernel. Everything went fine and
>>no problems. System shows no bad behaviour. The one thing I noticed is
>>the System monitor is only showing one cpu. I have an Intel d865gbf
>>board with a 3.0 HT P4. I also have an Ubuntu 5.04 install on another
>>hard drive and it shows 2 cpu's.
>>I checked the /proc/cpuinfo file and it is listing a cpu0 and cpu1.
>>Any help with why System monitor would only show one cpu and any oher
>>ways to check if the HT is being used correctly? Thanks.
>One of the first things I would check is top, see if it
>see's two cpu's. I would also check dmesg see if it lists
>two cpu's, I do not know how it lists a logical cpu, but I
>am sure google can find it out for you.
>I know many moons ago when I tried the installer on sarge it
>only seen one cpu, seems that they do not include an smp
>aware kernel with the installer, that might of changed a
>while ago. If that is the case just make your own, or
>download a smp aware kernel with apt-get. That was with dual
>amd MP cpus, was many moons ago, probably going on a good
>You just might want to keep it to one cpu as HyperThreading
>has a security bulletin against it, found in the BSD's
>probably effects all OS's. Check the news its all over the
>web if you want to find out more.
top only sees one cpu. Haven't tried dmesg. Will try when I get to the
The installer finds (I guess) a HT cpu because it lists as a choice the
2.6.8 smp kernel. When I try to use that kernel, the machine fails to
boot, so I choose 2.6.8 and it boots fine. Then I download and install
the 2.6.11-1 kernel. It boots up fine but system monitor does not see 2
cpu's. Other than that, the system seems fine.
The exact same system running Ubuntu with kernel 2.6.10-7 smp sees the
dual (HT) cpu's. I've also had FC3 installed and it sees the HT cpu as 2
Seems the two smp kernels I've tried with debian both display their own
set of problems that I don't see with other distros or other distros
based on debian.
-- To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org with a subject of "unsubscribe". Trouble? Contact email@example.com