cpum_sf.d37efd The AUX buffer with <Current AUX buffer size in num of pages> pages for the diagnostic-sampling mode is full
Explanation
The diagnostic-sampling mode of the CPU-measurement sampling facility uses an AUX buffer
to hold sampling data until it is consumed by an application, for example, perf.
Sample data accumulated faster than the application could consume it until the buffer was full.
The current measurements are incomplete.
User response
End all performance measurement sessions and discard the measurement data.
Repeat your measurements with a larger AUX buffer or a lower sampling frequency.
If you are using perf, you can set the buffer size with the -m option and the sampling frequency
with the -F option.