Status: New
Owner: ----
New issue 3083 by [email protected]: kInitialMaxFastElementArray is too
arbitrary, causing inexplicable performance drops
http://code.google.com/p/v8/issues/detail?id=3083
For some reason, the kInitialMaxFastElementArray value in objects.h is set
to an arbitrary 100000
(https://github.com/v8/v8/blob/abfa9f17410a2a84c2ac3364e0288f4a8311b9b1/src/objects.h#L2411).
This leads to applications that depend on fast pre-allocated array
performance to lose their ability to run in real-time if they happen to
just barely surpass that threshold.
You can find multiple StackOverflow threads on the issue, most prominently
this one:
http://stackoverflow.com/questions/16961838/working-with-arrays-in-v8-performance-issue/16962031#16962031
Is there no way to configure such values per Javascript instance? Other JS
implementations seem to deal with this more gracefully.
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