Bugzilla – Full Text Bug Listing
| Summary: | Bad Performance of Scope$Substitutor.substitute(Substitution, TypeBinding) | ||||||
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| Product: | [Eclipse Project] JDT | Reporter: | Christian Dietrich <christian.dietrich.opensource> | ||||
| Component: | Core | Assignee: | JDT-Core-Inbox <jdt-core-inbox> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | |||||
| Severity: | normal | ||||||
| Priority: | P3 | CC: | stephan.herrmann | ||||
| Version: | 4.7.2 | ||||||
| Target Milestone: | --- | ||||||
| Hardware: | PC | ||||||
| OS: | Mac OS X | ||||||
| Whiteboard: | stalebug | ||||||
| Attachments: |
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This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. As such, we're closing this bug. If you have further information on the current state of the bug, please add it and reopen this bug. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant. -- The automated Eclipse Genie. Christian, sorry this fell through the cracks. But from your overall observation, we can only see that type inference is more expensive than no type inference ;p From here to blaming method substitute() is a far shot. Did you have any profiler data to show what call chain might be causing particular pain? Perhaps, it's not the single execution that causes problems, but the number of calls? |
Created attachment 273255 [details] Sample Project Scope$Substitutor.substitute(Substitution, TypeBinding) has bad performance in some of our code. the reason in the inference of generic method parameters GenericConverter.unwrap(d).doubleValue(); vs GenericConverter.<Double,SomeConcreteType>unwrap(d).doubleValue(); we have a lot of the first calls in out code and jdt needs 10 minutes on a bigger project replacing it with GenericConverter.<Double,SomeConcreteType>unwrap(d).doubleValue(); makes that 10 mins become 300 ms or something like that. please a small sample project attached