On Tue, 2010-02-23 at 18:54 +0100, Frederic Weisbecker wrote: > > [PATCH] perf record: filter out perf process tracepoint events > > > > The perf process itself can generate a lot of trace data, which most > > of the time isn't of any interest. This patch adds a predicate to the > > kernel tracepoint filter of each recorded event type which effectively > > screens out any event generated by perf. > > > > Assuming the common case would be to ignore perf, this makes it the > > default; the old behavior can be selected by using 'perf record -P'. > > > I think filtering out perf from the instrumentation is a very > desirable features. > > But I see two drawbacks with this patch. > First of all, we want to keep perf as a part of the instrumentation > as a default behaviour I think, as it is a true part of the system > wide load. So I would rather suggest to keep it as a default and > have an exclude_perf option instead of include_perf. Agreed, excluding by default doesn't seem to be a sane idea. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>