feffccca22
(1) --prof-cpp: Collects ticks like --prof, but ignores code creation events to reduce distortion (so all JS ticks will be "unaccounted"). Useful for profiling C++ code. (2) --timed-range flag for tick processor: Ignores ticks before the first and after the last call to Date.now(). Useful for focusing on the timed section of a test. Review URL: https://codereview.chromium.org/802333002 Cr-Commit-Position: refs/heads/master@{#26168}
63 lines
2.4 KiB
Plaintext
63 lines
2.4 KiB
Plaintext
Statistical profiling result from v8.log, (13 ticks, 2 unaccounted, 0 excluded).
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[Shared libraries]:
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ticks total nonlib name
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3 23.1% /lib32/libm-2.7.so
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1 7.7% ffffe000-fffff000
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[JavaScript]:
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ticks total nonlib name
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[C++]:
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ticks total nonlib name
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2 15.4% 22.2% v8::internal::Runtime_Math_exp(v8::internal::Arguments)
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1 7.7% 11.1% v8::internal::JSObject::LookupOwnRealNamedProperty(v8::internal::String*, v8::internal::LookupResult*)
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1 7.7% 11.1% v8::internal::HashTable<v8::internal::StringDictionaryShape, v8::internal::String*>::FindEntry(v8::internal::String*)
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1 7.7% 11.1% exp
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[Summary]:
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ticks total nonlib name
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0 0.0% 0.0% JavaScript
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5 38.5% 55.6% C++
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0 0.0% 0.0% GC
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4 30.8% Shared libraries
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2 15.4% Unaccounted
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[C++ entry points]:
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ticks cpp total name
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2 40.0% 15.4% v8::internal::Runtime_Math_exp(v8::internal::Arguments)
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1 20.0% 7.7% v8::internal::JSObject::LookupOwnRealNamedProperty(v8::internal::String*, v8::internal::LookupResult*)
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1 20.0% 7.7% v8::internal::HashTable<v8::internal::StringDictionaryShape, v8::internal::String*>::FindEntry(v8::internal::String*)
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1 20.0% 7.7% exp
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[Bottom up (heavy) profile]:
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Note: percentage shows a share of a particular caller in the total
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amount of its parent calls.
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Callers occupying less than 2.0% are not shown.
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ticks parent name
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3 23.1% /lib32/libm-2.7.so
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3 100.0% LazyCompile: exp native math.js:41
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3 100.0% Script: exp.js
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2 15.4% v8::internal::Runtime_Math_exp(v8::internal::Arguments)
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2 100.0% LazyCompile: exp native math.js:41
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2 100.0% Script: exp.js
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2 15.4% UNKNOWN
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1 50.0% LazyCompile: exp native math.js:41
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1 100.0% Script: exp.js
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1 7.7% v8::internal::JSObject::LookupOwnRealNamedProperty(v8::internal::String*, v8::internal::LookupResult*)
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1 100.0% Script: exp.js
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1 7.7% v8::internal::HashTable<v8::internal::StringDictionaryShape, v8::internal::String*>::FindEntry(v8::internal::String*)
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1 100.0% Script: exp.js
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1 7.7% ffffe000-fffff000
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1 7.7% exp
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1 100.0% LazyCompile: exp native math.js:41
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1 100.0% Script: exp.js
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