cpum_sf.310c27 Sample data caused the AUX buffer with <Current AUX buffer size in num of pages> pages to overflow
Explanation
The CPU-measurement sampling facility uses an AUX buffer
to hold sampling data until it is consumed by an application, for example, perf.
The remaining buffer space is not sufficient for the current sample.
The overflowing sample was dropped. 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.