> Date: Fri, 9 Mar 2007 12:08:25 -0500> From: dparker@utica.edu> Ben Humpert wrote:> > my dell PE 860 has a Intel DualCore Xeon with hyper-threading, my Dell > > PE 850 only has a Intel P4 with HT. On both i only see two processors > > (for sure, the dualcore has two physical core, P4 only one physical and > > one logical). Why i dont see four cores on my DualCore? DO i need a > > special kernel-image or something?> > Are you runnning a SMP kernel?> > Try "cat /proc/cpuinfo" and see if it shows both CPUs and the number of > cores in each.> > - Dave

Yes, for sure Here is what cat /proc/cpu said => http://nopaste.php-q.net/281168 (cpu cores 2)

On 09/03/07 19:09 +0100, Ben Humpert wrote:
> > Date: Fri, 9 Mar 2007 12:08:25 -0500> From: dparker@utica.edu> Ben Humpert wrote:> > my dell PE 860 has a Intel DualCore Xeon with hyper-threading, my Dell > > PE 850 only has a Intel P4 with HT. On both i only see two processors > > (for sure, the dualcore has two physical core, P4 only one physical and > > one logical). Why i dont see four cores on my DualCore? DO i need a > > special kernel-image or something?> > Are you runnning a SMP kernel?> > Try "cat /proc/cpuinfo" and see if it shows both CPUs and the number of > cores in each.> > - Dave
>
> Yes, for sure Here is what cat /proc/cpu said => http://nopaste.php-q.net/281168 (cpu cores 2)

It looks like your CPU is as Xeon 3060. According to intel, this cpu doesn't
have hyper-threading. That's probably why you only see to processors.



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Ben Humpert wrote:
> > Date: Fri, 9 Mar 2007 12:08:25 -0500
> > From: dparker@utica.edu
> > Ben Humpert wrote:
> > > my dell PE 860 has a Intel DualCore Xeon with hyper-threading, my Dell
> > > PE 850 only has a Intel P4 with HT. On both i only see two processors
> > > (for sure, the dualcore has two physical core, P4 only one physical
> and
> > > one logical). Why i dont see four cores on my DualCore? DO i need a
> > > special kernel-image or something?
> >
> > Are you runnning a SMP kernel?
> >
> > Try "cat /proc/cpuinfo" and see if it shows both CPUs and the number of
> > cores in each.
>
> Yes, for sure Here is what cat /proc/cpu said =>
> http://nopaste.php-q.net/281168 (cpu cores 2)

Sorry, I can't get that website to come up.

Anyway, as you probably know, hyper threading is not the same as having
a second core. To the best of my knowledge, a dual-core CPU will always
show 2 cores regardless of whether it supports hyper threading. I don't
think you will see each core twice if they are hyper threaded.

- Dave

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On 09/03/07 14:02 -0500, David A. Parker wrote:
> Anyway, as you probably know, hyper threading is not the same as having
> a second core. To the best of my knowledge, a dual-core CPU will always
> show 2 cores regardless of whether it supports hyper threading. I don't
> think you will see each core twice if they are hyper threaded.
I saw a /proc/cpuinfo from a Xeon 5060 (dual-core with hyper-threading), you
do see each core twice.

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Damien Ferrand wrote:
> On 09/03/07 14:02 -0500, David A. Parker wrote:
>> Anyway, as you probably know, hyper threading is not the same as having
>> a second core. To the best of my knowledge, a dual-core CPU will always
>> show 2 cores regardless of whether it supports hyper threading. I don't
>> think you will see each core twice if they are hyper threaded.
> I saw a /proc/cpuinfo from a Xeon 5060 (dual-core with hyper-threading), you
> do see each core twice.

Thanks for the correction. My mistake.

Ben, can you post your "cat /proc/cpuinfo" output for the box in question?

- Dave

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Registered Linux User #408177


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Damien Ferrand wrote:
> On 09/03/07 14:02 -0500, David A. Parker wrote:
>> Anyway, as you probably know, hyper threading is not the same as having
>> a second core. To the best of my knowledge, a dual-core CPU will always
>> show 2 cores regardless of whether it supports hyper threading. I don't
>> think you will see each core twice if they are hyper threaded.
> I saw a /proc/cpuinfo from a Xeon 5060 (dual-core with hyper-threading), you
> do see each core twice.

A P4 HT shows two cores, even though there aren't two physical ones.

Cassiano

On 09.03.07 19:09, Ben Humpert wrote:
> From: Ben Humpert <ben_humpert@msn.com>
> Date: Fri, 9 Mar 2007 19:09:00 +0100
> Subject: RE: [Fwd: Re: Debian Installer on DELL PowerEdge 850/860]
> To: debian-user@lists.debian.org
>
> > Date: Fri, 9 Mar 2007 12:08:25 -0500> From: dparker@utica.edu> Ben Humpert wrote:> > my dell PE 860 has a Intel DualCore Xeon with hyper-threading, my Dell > > PE 850 only has a Intel P4 with HT. On both i only see two processors > > (for sure, the dualcore has two physical core, P4 only one physical and > > one logical). Why i dont see four cores on my DualCore? DO i need a > > special kernel-image or something?> > Are you runnning a SMP kernel?> > Try "cat /proc/cpuinfo" and see if it shows both CPUs and the number of > cores in each.> > - Dave
>
> Yes, for sure Here is what cat /proc/cpu said => http://nopaste.php-q.net/281168 (cpu cores 2)

Hello,
you seem to have broken newline handling in your mail client (msn/hotmail?)
Please try to set it up to break lines below 80 characters and not to remove
line breaks where they are (microsoft has very bad guess where do line
breaks belong, they have no idea about plaintext formattinf and
flowed-format messages)
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