That last number is not generated by reading the frequency of the
processor -- it is read from the CPU as part of the model string. This
is vendor-specific and is literally burned into the chip when it is
manufactured.
So the entire model name of your processor is:
Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
The frequency at the end is part of the model, NOT the current frequency.
It's like if you bought a car with a V8 engine in it with multiple
displacement technology. The "model name" would be:
Toyota Tundra with V8 6.4L engine
But when you're driving on the freeway, it may disable 4 of the
cylinders, so your "cpu MHz" in this example would be "V4 3.2L" even
though the "model" shows up as a V8 6.4L.
Paul Krizak 7171 Southwest Pkwy MS B200.3A
MTS Systems Engineer Austin, TX 78735
Advanced Micro Devices Desk: (512) 602-8775
Linux/Unix Systems Engineering Cell: (512) 791-0686
Global IT Infrastructure Fax: (512) 602-0468
On 05/31/2011 12:47 PM, nodata wrote:
On 31/05/11 18:40, Win Htin wrote:
Hi folks,
When I do cat /proc/cpuinfo on my IBM HS-22 blade servers I see:
model name : Intel(R) Xeon(R) CPU X5670 @ 2.93GHz
compare the last number on that line
cpu MHz : 1596.000
with the current speed on this line
where as on the older HS-21 servers I see:
model name : Intel(R) Xeon(R) CPU E5440 @ 2.83GHz
cpu MHz : 2833.505
Why do I see the cpu MHz to be a lot less on the HS-22 than what the
model name info represents? Any ideas?
Thanks in advance.
Win
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