Reviewers: loislo, Yang, Jakob, alph,
Description:
Simplify sampling rate calculation
Sampling rate is now calculated as total number of samples divided by
profiling
time in ms. Before the patch the sampling rate was updated once per 100ms
which
doesn't have any obvious advantage over the simpler method.
Also we are going to get rid of the profile node self and total time
calculation
in the v8 CPU profiler and only expose profiling start/end time for
CpuProfile
and number of ticks on each ProfileNode and let clients do all the math
should
they need it.
BUG=None
Please review this at https://codereview.chromium.org/21105003/
SVN Base: https://v8.googlecode.com/svn/branches/bleeding_edge
Affected files:
M src/cpu-profiler-inl.h
M src/cpu-profiler.cc
M src/profile-generator.h
M src/profile-generator.cc
M test/cctest/test-cpu-profiler.cc
M test/cctest/test-profile-generator.cc
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