Does intel pcm capture kernel activity?

[anonymous1782]

Hi,

I wonder if the intel pcm tool can capture linux kernel activity.

Colud anyone let me know how pcm measure memory bandwidth?

Thanks

[rdementi]

the memory bandwidth is measured using the uncore performance monitoring units: https://www.intel.com/content/www/us/en/developer/articles/technical/intel-sdm.html#inpage-nav-7
and some bandwidth metrics use Memory Bandwidth Monitoring (MBM) technology: https://www.intel.com/content/www/us/en/developer/articles/technical/introduction-to-memory-bandwidth-monitoring.html

Intel PCM captures all activity, not specifically Linux kernel activity