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some profiling numbers
- From: graydon hoare <graydon at redhat dot com>
- To: gcc at gcc dot gnu dot org
- Date: Wed, 25 Jun 2003 13:39:57 -0400
- Subject: some profiling numbers
hi,
I've recently done some profiling and analysis of gcc and g++, using the
oprofile hardware-assisted profiling module in linux 2.5. I collected
stats on a variety of versions of gcc (some only of historical interest)
and some different branches and workloads, and characterized some
aspects of the cache and branch-mispredict penalties in addition to
cycle hotspots.
the results of the work are posted at
http://people.redhat.com/graydon/gcc-optimizing/
and http://people.redhat.com/graydon/g++-report/
any comments or questions are welcome (including instructions and
hand-holding on how to set up the profiler for your own runs, if you
want to do more of this stuff).
-graydon