On 08/09/2010 11:41 AM, Kristen Walcott wrote: > Hi, > > I'm trying to modify the sample period during test execution (after > perf_event_open has been called) from code similar to pebs_smpl. I > would like to do it based on certain conditions as the samples are read > in. Is there a simple way to do this? > I saw in kernel/perf_event.c that there is a perf_adjust_period > function, but I couldn't find anything similar at the user level.
I believe the perf_adjust_period function is used only internally for regulating the counter overflow interrupt rate. As far as I know, there's no way to change the period after the event has been opened. You could close and reopen the event with the new period, but you probably thought of that already. - Corey ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ perfmon2-devel mailing list perfmon2-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/perfmon2-devel
