InlineCachingCallSite perf degradation due to JRUBY-2477 fix
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Key: JRUBY-2478
URL: http://jira.codehaus.org/browse/JRUBY-2478
Project: JRuby
Issue Type: Bug
Components: Performance
Affects Versions: JRuby 1.1.1
Reporter: Charles Oliver Nutter
Assignee: Charles Oliver Nutter
Fix For: JRuby 1.1.2
In order to fix JRUBY-2477, some overhead was adding to the caching process in
InlineCachingCallSite. As a result, polymorphic calls (which get no benefit
from our monomorphic inline cache) have taken a 13% performance hit. We need to
remedy this, either by implementing a polymorphic inline cache or by disabling
inline caching (eliminating cache churn) when a call site is found to be
polymorphic.
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