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Intel Xeon 5649 2.53GHz Turbo problem

DISCUSSION Paweł Staszewski 2 participants 2 messages Nov 13, 2011 – Nov 14, 2011 ACPI

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#0 lore raw

Hello

I have question
How can I check if Turbo Boost is working with Xeon E5649

I have turbostats that shows:

pk cr CPU    %c0  GHz  TSC    %c1    %c3    %c6  %pc3  %pc6
           56.12 2.67 2.53  43.88   0.00   0.00  0.00  0.00
0   0   0  17.79 2.67 2.53  82.21   0.00   0.00  0.00  0.00
0   0  12  17.81 2.67 2.53  82.19   0.00   0.00  0.00  0.00
0   1   2  13.04 2.67 2.53  86.96   0.00   0.00  0.00  0.00
0   1  14  12.73 2.67 2.53  87.27   0.00   0.00  0.00  0.00
0   2   4  13.70 2.67 2.53  86.30   0.00   0.00  0.00  0.00
0   2  16  13.39 2.67 2.53  86.61   0.00   0.00  0.00  0.00
0   8   6  98.81 2.67 2.53   1.19   0.00   0.00  0.00  0.00
0   8  18  98.74 2.67 2.53   1.26   0.00   0.00  0.00  0.00
0   9   8  98.60 2.67 2.53   1.40   0.00   0.00  0.00  0.00
0   9  20  97.47 2.67 2.53   2.53   0.00   0.00  0.00  0.00
0  10  10  98.62 2.67 2.53   1.38   0.00   0.00  0.00  0.00
0  10  22  97.19 2.67 2.53   2.81   0.00   0.00  0.00  0.00
1   0   1  13.11 2.67 2.53  86.89   0.00   0.00  0.00  0.00
1   0  13  13.11 2.67 2.53  86.89   0.00   0.00  0.00  0.00
1   1   3  15.34 2.67 2.53  84.66   0.00   0.00  0.00  0.00
1   1  15  15.09 2.67 2.53  84.91   0.00   0.00  0.00  0.00
1   2   5  13.32 2.67 2.53  86.68   0.00   0.00  0.00  0.00
1   2  17  12.77 2.67 2.53  87.23   0.00   0.00  0.00  0.00
1   8   7  98.67 2.67 2.53   1.33   0.00   0.00  0.00  0.00
1   8  19  98.67 2.67 2.53   1.33   0.00   0.00  0.00  0.00
1   9   9  98.35 2.67 2.53   1.65   0.00   0.00  0.00  0.00
1   9  21  96.92 2.67 2.53   3.08   0.00   0.00  0.00  0.00
1  10  11  98.10 2.67 2.53   1.90   0.00   0.00  0.00  0.00
1  10  23  95.56 2.67 2.53   4.44   0.00   0.00  0.00  0.00

So 2.67Ghz - but based on Intel spec max Turbo freq. for this cpu is 2.93Ghz
http://ark.intel.com/products/52581/Intel-Xeon-Processor-E5649-%2812M-Cache-2_53-GHz-5_86-GTs-Intel-QPI%29

Is there any tool that can show me good turbo stats ? or turbostat is ok but i have something wrong with Bios settings ? C-STATES ? pm governor ?

Thanks
Pawel

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#1 lore raw
Quoted 5 lines · Paweł Staszewski

How can I check if Turbo Boost is working with Xeon E5649

I have turbostats that shows:

pk cr CPU    %c0  GHz  TSC    %c1    %c3    %c6  %pc3  %pc6
           56.12 2.67 2.53  43.88   0.00   0.00  0.00  0.00
                   ^^^^

It is working.

Quoted 1 line

So 2.67Ghz - but based on Intel spec max Turbo freq. for this cpu is 2.93Ghz

You have too many cores active. You'll have to quiesce 4 cores into C6 to get 2.93GHz[1] out of the remaining 2 cores in the package.

[1]
http://www.intel.de/content/dam/doc/specification-update/xeon-5600-specification-update.pdf

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