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This bug was originally marked as duplicate of bug 227293, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related. Build: NetBeans IDE 8.0.2 (Build 201411181905) VM: Java HotSpot(TM) 64-Bit Server VM, 25.25-b02, Java(TM) SE Runtime Environment, 1.8.0_25-b18 OS: Windows 8 User Comments: GUEST: Each time we switch tabs netbeans got hanged. Maximum slowness yet reported was 31089 ms, average is 31089
Created attachment 154065 [details] nps snapshot
File change listeners are added in EDT. Roots of the slowness are these two methods: - o.n.m.java.project.ProfileProblemsProviderImpl.getProblems() - o.n.m.java.project.ProjectProblemsProviders$ReferenceProblemProviderImpl.getProblems() Also, the native filesystem (NTFS) could be slow or blocked at that moment. Reassigning to java/Project. Please evaluate. Thank you.
Hmm, looking at the attachment 154065 [details] (https://netbeans.org/bugzilla/attachment.cgi?id=154065) there is none of the ProjectProblemsProviders there is window system deserialisation. Someone needs to clean his dashboard? I will fix those which are related to the ProjectProblems and ignore the others.
The project problems snapshots fixed. Fixed jet-main 1eedc205f0bb
Integrated into 'main-silver', will be available in build *201508130002* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress) Changeset: http://hg.netbeans.org/main-silver/rev/1eedc205f0bb User: Tomas Zezula <tzezula@netbeans.org> Log: #252824:org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.exists: LowPerformance took 31089 ms.