Messages in this thread | | | Subject | Re: [PATCH 4/4] trace: profile all if conditionals | From | Andi Kleen <> | Date | Sun, 23 Nov 2008 20:43:07 +0100 |
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Steven Rostedt <rostedt@goodmis.org> writes: > > Miss means the branch was not taken. Hit means the branch was taken. > The percent is the percentage the branch was taken.
I'm not sure the results are very useful? What would you do with it?
It seems like a very special case of gcov, but I think I would rather have the full thing (patches in -mm I think)
> This adds a significant amount of overhead and should only be used > by those analyzing their system.
Often this can be also done using CPU performance counters. Might be a cheaper option.
-Andi
-- ak@linux.intel.com
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