Bug 190336
| Summary: | [JSC][YARR] Support YarrJIT in sampling profiler | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Yusuke Suzuki <ysuzuki> |
| Component: | JavaScriptCore | Assignee: | Yusuke Suzuki <ysuzuki> |
| Status: | RESOLVED DUPLICATE | ||
| Severity: | Normal | CC: | saam |
| Priority: | P2 | ||
| Version: | WebKit Nightly Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
Yusuke Suzuki
...
| Attachments | ||
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| Add attachment proposed patch, testcase, etc. |
Yusuke Suzuki
When running uglify-js / coffeescript in web-tooling-benchmark, so much time is consumed in '#<nil>:None:<nil>'.
Sampling rate: 1000.000000 microseconds
Hottest bytecodes as <numSamples 'functionName#hash:JITType:bytecodeIndex'>
2441 'Function#<nil>:None:<nil>'
642 '#<nil>:None:<nil>'
462 'stringify#<nil>:None:<nil>'
188 'defaults#EZuPgj:FTL:755'
174 'push#EmOCkn:FTL:58'
155 'quote#A7WHiP:Baseline:62 <-- compareTo#EmCQ7y:FTL:174'
112 'compareTo#EmCQ7y:FTL:192'
98 'is_unicode_combining_mark#CdiBr0:Baseline:43 <-- is_identifier_char#BBa5RX:FTL:123'
95 '#Am9gS7:Baseline:10 <-- doit#At6wj3:FTL:76'
84 'OutputStream#D03V2N:FTL:1420'
71 'push#EmOCkn:FTL:114'
70 'push#EmOCkn:FTL:180'
69 'pop#CxNXKP:Baseline:85 <-- #D43Ncu:FTL:218'
64 '_visit#AK9Sj2:FTL:100'
61 'indexOf#<nil>:None:<nil>'
This is actually YarrJIT RegExp execution. We would like to have more detailed results for this time, like, "What RegExp takes much time?".
Saam Barati
That would be nice.
I thought the sampling profiler knows when it's in the YARR?
Yusuke Suzuki
*** This bug has been marked as a duplicate of bug 201702 ***