Status: New
Owner: ----
New issue 3967 by [email protected]: CpuProfiler: Consumes 100% of one
core busy looping in ProfilerEventsProcessor::Run()
https://code.google.com/p/v8/issues/detail?id=3967
Version: 3.14, 3.28 (actually 3.21 and newer I think)
OS: All
Architecture: All
What steps will reproduce the problem?
1. Start the CpuProfiler
2. Observe CPU usage of the "v8:ProcEvntProc" thread
What is the expected output?
CPU usage similar to that from the --prof profiling.
What do you see instead?
100% CPU usage on the core on which the "v8:ProcEvntProc" thread runs.
Please use labels and text to provide additional information.
The behaviour in 3.14 is slightly different than 3.28 (I think the change
was actually introduced in 3.21). In 3.14, the thread yields timeslices, in
3.28 it does not.
There was some discussion of this problem in this v8-dev thread:
https://groups.google.com/forum/#!topic/v8-dev/rll1ytq5eaU
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