Is AMD rev F the same thing as socket F?

Is AMD rev F the same thing as socket F?

[Neil Aggarwal]

Hello:

I am looking at the RHEL 5.4 virtualization guide.
According to Chapter 17, if I want to use KVM on my
machine, I need to check if it has the constant Time Stamp 
Counter by running this:

cat /proc/cpuinfo | grep constant_tsc

When I do that on the server (Currently running CentOS 5.3),
I do not get any output.  According to the guide, that
means my system does not have the counter.

It then gives me instructions for AMD revision F CPUs.
I did a search and did not find anything that seems relevant 
to revision F.  The only stuff I am finding is talking about
socket F. Is that the same things as a Socket F CPU or 
something different?  

Thanks,
	Neil


--
Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
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RE: Is AMD rev F the same thing as socket F?

[Neil Aggarwal]

I forgot to mention that I have an AMD Opteron 2210
processor.

When I get cat /proc/cpuinfo, I get this output for the
first core (The second core is the same):

vendor_id       : AuthenticAMD
cpu family      : 15
model           : 65
model name      : Dual-Core AMD Opteron(tm) Processor 2210
stepping        : 2
cpu MHz         : 1809.490
cache size      : 1024 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 1
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca
cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdts
cp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy
bogomips        : 3622.54
TLB size        : 1024 4K pages
clflush size    : 64
cache_alignment : 64
address sizes   : 40 bits physical, 48 bits virtual
power management: ts fid vid ttp tm stc

Thanks,
	Neil

--
Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
Will your e-commerce site go offline if you have
a DB server failure, fiber cut, flood, fire, or other disaster?
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> -----Original Message-----
> From: kvm-owner@vger.kernel.org 
> [mailto:kvm-owner@vger.kernel.org] On Behalf Of Neil Aggarwal
> Sent: Sunday, October 18, 2009 10:38 AM
> To: kvm@vger.kernel.org
> Subject: Is AMD rev F the same thing as socket F?
> 
> Hello:
> 
> I am looking at the RHEL 5.4 virtualization guide.
> According to Chapter 17, if I want to use KVM on my
> machine, I need to check if it has the constant Time Stamp 
> Counter by running this:
> 
> cat /proc/cpuinfo | grep constant_tsc
> 
> When I do that on the server (Currently running CentOS 5.3),
> I do not get any output.  According to the guide, that
> means my system does not have the counter.
> 
> It then gives me instructions for AMD revision F CPUs.
> I did a search and did not find anything that seems relevant 
> to revision F.  The only stuff I am finding is talking about
> socket F. Is that the same things as a Socket F CPU or 
> something different?  
> 
> Thanks,
> 	Neil
> 
> 
> --
> Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
> Will your e-commerce site go offline if you have
> a DB server failure, fiber cut, flood, fire, or other disaster?
> If so, ask about our geographically redundant database system.
> 
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: Is AMD rev F the same thing as socket F?

[Chris Lalancette]

Neil Aggarwal wrote:
> I forgot to mention that I have an AMD Opteron 2210
> processor.
> 
> When I get cat /proc/cpuinfo, I get this output for the
> first core (The second core is the same):
> 
> vendor_id       : AuthenticAMD
> cpu family      : 15

^^ means that you have a Rev F (cpu_family 15 == 0xf in hex).

-- 
Chris Lalancette

RE: Is AMD rev F the same thing as socket F?

[Neil Aggarwal]

Chris:

> > cpu family      : 15
> ^^ means that you have a Rev F (cpu_family 15 == 0xf in hex).

That is good to know.  Thanks for the info.

I am actually quite surprised this processor does not have
the constant time stamp counter because the RHEL virtualization
guide states it is a feature of modern CPUs.  The Opteron is a
modern CPU to me.

Is there a listing of CPUs that have it?  I tried
searching in Google to no avail.

Thanks,
	Neil

--
Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
Will your e-commerce site go offline if you have
a DB server failure, fiber cut, flood, fire, or other disaster?
If so, ask about our geographically redundant database system. 

Re: Is AMD rev F the same thing as socket F?

[Brian Jackson]

On Monday 19 October 2009 09:21:48 am Neil Aggarwal wrote:
> Chris:
> > > cpu family      : 15
> >
> > ^^ means that you have a Rev F (cpu_family 15 == 0xf in hex).
> 
> That is good to know.  Thanks for the info.
> 
> I am actually quite surprised this processor does not have
> the constant time stamp counter because the RHEL virtualization
> guide states it is a feature of modern CPUs.  The Opteron is a
> modern CPU to me.
> 
> Is there a listing of CPUs that have it?  I tried
> searching in Google to no avail.

I believe that feature started with the Phenom's for AMD. IIRC, Intel always 
had it.

> 
> Thanks,
> 	Neil
> 
> --
> Neil Aggarwal, (281)846-8957, www.JAMMConsulting.com
> Will your e-commerce site go offline if you have
> a DB server failure, fiber cut, flood, fire, or other disaster?
> If so, ask about our geographically redundant database system.
> 
> --
> To unsubscribe from this list: send the line "unsubscribe kvm" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
>