> How do I query individual hw event groups? > > 'perf list' output is really long now, and for example it gives me: > > cache: > l1d.replacement > [L1D data line replacements] > ... > > If I knew that I'm interested in cache related events, I'd have expected to > be > able to do: > > perf list cache > > or at least: > > perf list cache: > > or something similar to list just - but it does not seem to do the right > thing.
perf list doesn't support topic matching, only event name matching. I'll send a patch to add topic matching too. > triton:~/tip> perf list longest_lat_cache.miss > > List of pre-defined events (to be used in -e): > > cache: > longest_lat_cache.miss > [Core-originated cacheable demand requests missed LLC] > > But the event table actually includes the following as well: > > "PublicDescription": "This event counts each cache miss condition for > references to the last level cache.", > > which is not printed anywhere. I tried the obvious 'perf list -v > longest_lat_cache.miss'. -v (or --long-desc) should work and it did at some point. I'll investigate. > > 3) > > If I come with an event from the vendor world, say "LONGEST_LAT_CACHE.MISS", > and > try to list it, 'perf list' does not recognize it: > > triton:~/tip> perf list LONGEST_LAT_CACHE.MISS > > List of pre-defined events (to be used in -e): > > I believe the searching of events in perf list should be case insentitive in > general. Right. Will fix. -Andi
