Hi, I understand that VPP workers poll so they are always at 100 % CPU. However, I want to get an estimate of what is the effective CPU utilization i.e. the amount which was spent in doing the work for packet processing.
In the native applications, the crude way I used to employ was to take a time window of say 1 second and I already know how many cpu cycles it is worth, this acted as the denominator. Then in every packet poll, I used to count the cycles spent when the packet was actually brought in and processed. So empty polls were not counted in the used cycles. This acted like the numerator. When the window was exhausted, I used the numerator/denominator to get an approximation of effective CPU utilization of the worker. Is something like this already possible in VPP, I need to constantly monitor the effective CPU utilization of the worker at runtime to take some decisions and inform the system peers eg. to reduce sending traffic etc. Regards -Prashant
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