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Eclipse hangs (most of the time) during starting and always when opening a Java project. Expected result: no hanging. Actual results: hanging during startup and opening a Java project. Reproduction steps: 1. Initially, Eclipse is not running. 2. Delete the workspace. 3. Start Eclipse and create a new workspace and Java project. Retry if this hangs. Stop Eclipse 4. Start Eclipse. When I start Eclipse, then on the bottom right it goes to ‘deferred early start’ (*). Next to that, there's some kind of strober. Initially it is active (moving left and right), but after a few seconds it stops in-place and the IDE hangs (it does not react to moving the window around or clicking on anything). Sometimes, this hang does not happen and I can try to open the new (empty) Java project I previously created (in a previously empty workspace). But it hangs again. Some additional information: (*) Not sure what the exact string was. This is on Debian, x86_64-linux-gnu. I don't actually know the version, I only know it's ‘2021-12’ (Java developer's edition). The hang goes together with high CPU usage (70%-100%?). FWIW, I straced eclipse, and after the hang, there were many 'sched_yield', 'futex' and 'poll' and a few 'recvmsg' and EAGAIN, without any writes.
Please create thread dump with jstack <eclipse pid> and attach here.
Created attachment 288190 [details] thread dump I was not able to create a thread dump during the hang, because during the hang, jstack hangs as well. However, I was able to run jstack in a loop. Attached is the latest stack trace, shortly before the hang.
I assume you are running Eclipse on not supported platform (too old GTK3). Please go to help/installation/configuration, filter for "swt" and privide the reported swt properties here.
(In reply to Andrey Loskutov from comment #3) > I assume you are running Eclipse on not supported platform (too old GTK3). It's the current version of gtk in Debian: $ apt show libgtk-3-0 Package: libgtk-3-0 Version: 3.24.24-4 > Please go to help/installation/configuration, filter for "swt" and privide > the reported swt properties here. I'll take a look.
(In reply to Maxime Devos from comment #4) > (In reply to Andrey Loskutov from comment #3) > > I assume you are running Eclipse on not supported platform (too old GTK3). > > It's the current version of gtk in Debian: > > $ apt show libgtk-3-0 > Package: libgtk-3-0 > Version: 3.24.24-4 OK, this is supported. Unfortunately your thread dump shows idling Eclipse, so we still have no clue what is the reason for hangs. You could try latest 4.23 build, just in case your problem is somehow fixed in the meantime.
(In reply to Andrey Loskutov from comment #5) > OK, this is supported. Unfortunately your thread dump shows idling Eclipse, > so we still have no clue what is the reason for hangs. You could try latest > 4.23 build, just in case your problem is somehow fixed in the meantime. I didn't find help/installation/configuration initially so I tried updating Eclipse, but it seems like only some ‘Oomph’ component was updated. Also, curiously, this time opening the Java project did not hang. Anyway, I now found the SWT properties (in the partially updated Eclipse (still 4.22)): *** Date: woensdag 9 maart 2022 om 21:04:11 Midden-Europese standaardtijd *** Platform Details: *** System properties: -Dorg.eclipse.swt.graphics.Resource.reportNonDisposed=true org.eclipse.swt.graphics.Resource.reportNonDisposed=true org.eclipse.swt.internal.deviceZoom=100 org.eclipse.swt.internal.gdk.backend=x11 org.eclipse.swt.internal.gtk.theme=Adwaita org.eclipse.swt.internal.gtk.version=3.24.24 org.eclipse.swt.internal.webkitgtk.version=2.34.6 sun.java.command=/home/druivensap/eclipse/java-2021-12/eclipse//plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar -data file:/home/druivensap/eclipse-workspace/ -os linux -ws gtk -arch x86_64 -showsplash /home/druivensap/.p2/pool/plugins/org.eclipse.epp.package.common_4.22.0.20211202-1200/splash.bmp -launcher /home/druivensap/eclipse/java-2021-12/eclipse/eclipse -name Eclipse --launcher.library /home/druivensap/.p2/pool/plugins/org.eclipse.equinox.launcher.gtk.linux.x86_64_1.2.400.v20211117-0650/eclipse_11600.so -startup /home/druivensap/eclipse/java-2021-12/eclipse//plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar --launcher.appendVmargs -exitdata 3801e -product org.eclipse.epp.package.java.product -vm /usr/lib/jvm/default-java/bin/java -vmargs -Dosgi.requiredJavaVersion=11 -Dosgi.instance.area.default=@user.home/eclipse-workspace -Dsun.java.command=Eclipse -XX:+UseG1GC -XX:+UseStringDeduplication --add-modules=ALL-SYSTEM -Dosgi.requiredJavaVersion=11 -Dosgi.dataAreaRequiresExplicitInit=true -Dorg.eclipse.swt.graphics.Resource.reportNonDisposed=true -Xms256m -Xmx2048m --add-modules=ALL-SYSTEM -Declipse.p2.max.threads=10 -Doomph.update.url=https://download.eclipse.org/oomph/updates/milestone/latest -Doomph.redirection.index.redirection=index:/->http://git.eclipse.org/c/oomph/org.eclipse.oomph.git/plain/setups/ -jar /home/druivensap/eclipse/java-2021-12/eclipse//plugins/org.eclipse.equinox.launcher_1.6.400.v20210924-0641.jar *** System environment variables: *** Features: *** Plug-in Registry: org.eclipse.e4.ui.css.swt (0.14.400.v20211026-1534) "Eclipse CSS SWT Support" [Active] org.eclipse.e4.ui.css.swt.theme (0.13.0.v20201026-1147) "Eclipse CSS SWT Theme Support" [Active] org.eclipse.e4.ui.swt.gtk (1.1.100.v20210108-1832) "Eclipse UI GTK Enhancements" [Resolved] org.eclipse.e4.ui.workbench.addons.swt (1.4.400.v20211102-0453) "Eclipse e4 Workbench Add-ons" [Active] org.eclipse.e4.ui.workbench.renderers.swt (0.15.300.v20211102-1716) "Eclipse e4 Workbench SWT Renderer" [Active] org.eclipse.e4.ui.workbench.swt (0.16.300.v20211102-0939) "Eclipse e4 Workbench SWT" [Active] org.eclipse.jface.databinding (1.13.0.v20210619-1146) "JFace Data Binding for SWT and JFace" [Resolved] org.eclipse.swt (3.118.0.v20211123-0851) "Standard Widget Toolkit" [Resolved] org.eclipse.swt.gtk.linux.x86_64 (3.118.0.v20211123-0851) "Standard Widget Toolkit for GTK" [Resolved] *** User Preferences: /bundle_defaults/org.eclipse.jdt.ui/CallHierarchy.defaultExpandWithConstructorsMembers=java.lang.Runnable.run;java.util.concurrent.Callable.call;org.eclipse.swt.widgets.Listener.handleEvent /bundle_defaults/org.eclipse.jdt.ui/content_assist_category_order=org.eclipse.jdt.ui.javaPostfixProposalCategory\:65547\u0000org.eclipse.jdt.ui.spellingProposalCategory\:65545\u0000org.eclipse.jdt.ui.javaTypeProposalCategory\:65540\u0000org.eclipse.jdt.ui.javaNoTypeProposalCategory\:65539\u0000org.eclipse.jdt.ui.textProposalCategory\:65541\u0000org.eclipse.jdt.ui.javaAllProposalCategory\:65542\u0000org.eclipse.jdt.ui.templateProposalCategory\:2\u0000org.eclipse.jdt.ui.swtProposalCategory\:3\u0000org.eclipse.jdt.ui.javaChainProposalCategory\:4 *** Current Install Configuration: Id: org.eclipse.e4.ui.css.swt, Version: 0.14.400.v20211026-1534, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.e4.ui.css.swt_0.14.400.v20211026-1534.jar Id: org.eclipse.e4.ui.css.swt.theme, Version: 0.13.0.v20201026-1147, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.e4.ui.css.swt.theme_0.13.0.v20201026-1147.jar Id: org.eclipse.e4.ui.swt.gtk, Version: 1.1.100.v20210108-1832, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.e4.ui.swt.gtk_1.1.100.v20210108-1832.jar Id: org.eclipse.e4.ui.workbench.addons.swt, Version: 1.4.400.v20211102-0453, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.e4.ui.workbench.addons.swt_1.4.400.v20211102-0453.jar Id: org.eclipse.e4.ui.workbench.renderers.swt, Version: 0.15.300.v20211102-1716, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.e4.ui.workbench.renderers.swt_0.15.300.v20211102-1716.jar Id: org.eclipse.e4.ui.workbench.swt, Version: 0.16.300.v20211102-0939, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.e4.ui.workbench.swt_0.16.300.v20211102-0939.jar Id: org.eclipse.swt, Version: 3.118.0.v20211123-0851, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.swt_3.118.0.v20211123-0851.jar Id: org.eclipse.swt.gtk.linux.x86_64, Version: 3.118.0.v20211123-0851, Location: reference:file:/home/druivensap/.p2/pool/plugins/org.eclipse.swt.gtk.linux.x86_64_3.118.0.v20211123-0851.jar *** Security Configuration:
(In reply to Maxime Devos from comment #6) > (In reply to Andrey Loskutov from comment #5) > > OK, this is supported. Unfortunately your thread dump shows idling Eclipse, > > so we still have no clue what is the reason for hangs. You could try latest > > 4.23 build, just in case your problem is somehow fixed in the meantime. > > > I didn't find help/installation/configuration initially so I tried updating > Eclipse, but it seems like only some ‘Oomph’ component was updated. The development builds of the upcoming version 4.23 can be found here: https://www.eclipse.org/downloads/packages/release/2022-03
I updated to the 4.23 release candidate. So far, it does not hang on startup or opening projects (although starting Eclipse and opening projects still (temporarily, the latter for a second or two) uses much CPU, but that's not a big problem, just a minor annoyance). However, I now sometimes encounter a hang during Java editing. In one case, it happens if I type "fpo", then press Control+space for completion, then delete the last character (with backspace) (before the completion could, er, complete). In another case, I didn't have to delete the last character (maybe I pressed up or down though?). In another case, deleting did not reproduce the hang doing multiple Control+space and deletions (*) in short order did. (*) Actually I'm not sure if I deleted (with backspace) again? I don't know if these hangs are related.
