Hi –

 

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!

-        Keith