src/lib/libpmc/pmcformat.h, branch releng/12.2 FreeBSD source tree pmc: convert native to jsonl and track TSC value of samples 2018-06-07T02:03:22+00:00 Matt Macy mmacy@FreeBSD.org 2018-06-07T02:03:22+00:00 f992dd4b5c6635e079c572fe1b59e34f0e28ad6d - add '-j' options to filter to enable converting native pmc log format to json lines format to enable the use of scripts and external tooling % pmc filter -j pmc.log pmc.jsonl - Record the tsc value in sampling interrupts as opposed to recording nanotime when the sample is copied to a global log in hardclock - potentially many milliseconds later. - At initialize record the tsc_freq and the time of day to give us an offset for translating the tsc values in callchain records 
- add '-j' options to filter to enable converting native pmc
  log format to json lines format to enable the use of scripts
  and external tooling

% pmc filter -j pmc.log pmc.jsonl

- Record the tsc value in sampling interrupts as opposed to
  recording nanotime when the sample is copied to a global log
  in hardclock - potentially many milliseconds later.

- At initialize record the tsc_freq and the time of day to give
  us an offset for translating the tsc values in callchain records