cpufreq and memory intensive benchmarks

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Hi,

I was recently running some SPEC benchmarks to test the way in which
cpufreq module adjusts the CPU frequency for various benchmarks and I
noticed that cpufreq always tends to rest at the maximum frequency
regardless of the benchmark on ondemand / conservative.

I then tried to identify memory intensive benchmarks
(http://users.elis.ugent.be/~leeckhou/papers/isca12-2.pdf) and upon
running milc / libquantum, I noticed that the same trend continued.

Does this mean that memory operation latencies are attributed as CPU busy time?
Could someone explain the inner workings behind this? What does the
CPU *really* do while the load/store is executing? Is it busy-waiting
/ idle?


Regards
Guru
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