Re: LuaJIT 2.1 Profiler released
- From: Mike Pall <mike-1310@xxxxxxxxxx>
- To: luajit@xxxxxxxxxxxxx
- Date: Mon, 14 Oct 2013 14:33:03 +0200
Luke Gorrie wrote:
> Does anybody know a simple way to run the profiler from Intel hardware
> performance events? (perhaps Linux can generate a SIGPROF from those
> instead of real time?)
Umm, it's the other way round: SIGPROF is generated from a timer
at fixed intervals. The counters for these events can then be
sampled in the signal handler or the callback triggered by it.
> I would quite like to get this same profiler output but measuring
> branch-mispredictions, last-level-cache references, etc.
AFAIK there are various libraries to do this. E.g. PAPI, though it
looks a bit heavyweight for my taste.
--Mike
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