The generated csv can be analyzed using any plotting tool. However, it may be a good idea to kill Xwindows and run in console mode, if background tasks are treated as irrelavant utilization noise in your analysis. Such requirement are best handled on per-platform using Typically this involves frequency influencing features such as cpu-freq governors or other such features.Ĭlamping frequency is not intended part of this tool. Note: Sometimes system study involves clamping values or disabling features that influence result parameters.
# Time, FreqReal, LoadIn, LoadOut, PkgPwr, PwrCore, PwrGpu, PwrDram, CpuDts, SocDts This ensures a good coalesced synthetic workload. Is aligned with the C0 activity that is being analyzed. For instance, a 10ms poll could causes up to 50% cpu overhead in traditional polling. To monitor soc power/thermal parameters at much fine grained time, typically comparable to governers's poll period This ensures that monitoring does not influence the overall system load (C0%).
The tool's most important usecase is to do logging at a fixed "own" overhead -not more than the present requested More work functions could beĪdded to the this tool overtime & they will be accounted for good - against the ON-time of duty cycling. psst just executes real work function duty-cycled in controlled loops. The fundamental difference compared to other power virus or monitor tools is that, the work done during hog is notĪ dummy function, but own useful work functions such as accounting, logging (in-memory), or power shape contourĬhange etc.
#Psst program update
In that case, update with the latest intel_rapl driver which supports it. Intel_rapl: driver does not support CPU family xxx model yyy
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