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For each "addAnnotation/removeAnnotation" cals, it iterate over all previous registered annotations. In case when you have for ex. 40 000 annotation this slows-down entire workbench while replacing occurrences. First performance boost can be gained by collecting only ProblemAnnotations and MarkerAnnotations so it simply ignore some of them. Example for DLTK: https://git.eclipse.org/r/161863
Created attachment 282669 [details] Simple test file * Create uploaded file as src/simple_java/MyClass.java in any java project. * Put cursor on "add" method. UI will be frozen on ReverseMap calls. Off course this file is extremely stupid, but make problem easy visible.
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. If you have further information on the current state of the bug, please add it. 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.
Hi Dawid, I'm not able to reproduce this problem on 2022-03 and 4.24 M1. Can you confirm whether the problem has been fixed by downloading either of the above SDKs from downloads.eclipse.org and rerunning your test?
