java - Eclipse extremely slow, continuously blocked in NonEssentialElementsFilter.hasFilteredChildren -


i have long-lasting problem eclipse, quite blocking, started after eclipse luna (no problem luna). example, problem occurring recent version of eclipse, whatever performance options change (advised other answers stackoverflow).

with quite big project (thousands of classes), eclipse slow (stuck several minutes or tens of minutes) quite randomly, when open it, later when open project tree nodes, when refresh, update svn working copy, etc.

using jvisualvm, can see time spent in org.eclipse.jdt.internal.ui.navigator.nonessentialelementsfilter.hasfilteredchildren and, in fact, in org.eclipse.jdt.internal.core.packagefragment.getelementname , 

org.eclipse.jdt.internal.core.util.util.concatwith...

i tried lot of things (decorations, antivirus, breakpoints, recreating new project, ...) nothing helps.

and luna or previous versions, did not have problem this. , tried lot of newer versions, mars, neon java only, neon jee, etc., have same problem.

i hope can help, because quite blocking!

this seems known problem (see eclipse bug 506009) has not yet been fixed. fix still being worked on , scheduled oxygen.1 (end of september 2017).

as workaround use package explorer instead of project explorer.


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