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Translating CPU flags

 
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paulm
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Joined: Mon Apr 03, 2006 5:53 am
Posts: 242
Location: Oxfordshire, UK

PostPosted: Sat Jul 17, 2010 4:19 pm    Post subject: Translating CPU flags Reply with quote

I have a small problem. I need to find out if the CPU in a box supports SpeedStep. This is a box that I have no physical access to (at least not in the near future...). Running 'cat /proc/cpuinfo gets me the following data:

Code:
[root@goldie ~]# cat /proc/cpuinfo
processor   : 0
vendor_id   : GenuineIntel
cpu family   : 15
model      : 2
model name   : Intel(R) Pentium(R) 4 CPU 2.00GHz
stepping   : 4
cpu MHz      : 1995.516
cache size   : 512 KB
fdiv_bug   : no
hlt_bug      : no
f00f_bug   : no
coma_bug   : no
fpu      : yes
fpu_exception   : yes
cpuid level   : 2
wp      : yes
flags      : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm
bogomips   : 3993.06


Which tells me its an Intel, and tells me its not real fast. But I have no idea about the flags, which I hope would tell me whether the CPU does support throttling.

Does anyone know where I can get either a better way of retrieving the needed info, or a translation table for the flags data?

Paul.
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PCNetSpec
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Joined: Sun Feb 21, 2010 3:50 pm
Posts: 631
Location: Cornwall UK

PostPosted: Sat Jul 17, 2010 4:49 pm    Post subject: Reply with quote

Here you go:
http://blog.incase.de/index.php/cpu-feature-flags-and-their-meanings/

As the EIST/EST flags are missing, I'm guessing the answer is NO speedstep isn't supported on this CPU, and AFAIK speedstep was only available on P4-M (mobile) CPU's, as far as the Pentium 4 family was concerned.

See "Versions" info here:
http://en.wikipedia.org/wiki/SpeedStep
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paulm
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Joined: Mon Apr 03, 2006 5:53 am
Posts: 242
Location: Oxfordshire, UK

PostPosted: Sat Jul 17, 2010 5:14 pm    Post subject: Reply with quote

Sad Looks like it. Never mind, maybe I can sell them a hardware upgrade. Wink

Thanks for the links - useful in any event and nice to know for future reference.

Paul.
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