I am running oprofile version 0.9.7, and would like to know if the counters from /var/lib/oprofile/samples/oprofiled.log are documented anywhere? Specifically, I am interested these global counters:
-- OProfile Statistics --
Nr. event lost due to buffer overflow: 0
Nr. samples lost due to no mapping: 3
Nr. backtraces skipped due to no file mapping: 99912
Nr. samples lost due to no mm: 0
I understand that reducing the sampling rate will make most of these counters go away, but the counter I am most interested in is “Nr. backtraces skipped due to no file mapping” because it increases monotonically between oprofile runs - it does not clear each run like the other counters. Only `opcontrol –deinit` clears it. Is this expected for this counter or is it a bug?
Thanks for your help!