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Shevek commented on NETBEANS-2291: ---------------------------------- Here's a profile of a slow NB startup, which might be a DIFFERENT issue? It looks like it's slow, but not for any really good reason? > NetBeans is unusably slow > ------------------------- > > Key: NETBEANS-2291 > URL: https://issues.apache.org/jira/browse/NETBEANS-2291 > Project: NetBeans > Issue Type: Bug > Components: projects - Gradle > Affects Versions: 8.2, 10.0, 11.0 > Environment: Ubuntu 18.10 > Linux 4.18.0 > 12 core Xeon E-2176M with 64Gb RAM > -Xmx2536m (2.5Gb for NB, of which it uses about 1.7G) > NetBeans 10vc2, 10vc5, 8.2 > JDK 11.0.1 > JDK 1.8 > G1GC, CMS GC, Serial GC > Reporter: Shevek > Assignee: Laszlo Kishalmi > Priority: Critical > Labels: performance, usability > Attachments: nb-11-slow-hotspots.png, > netbeans-10vc5-jdk8-hang-gototype.txt.tdump, > netbeans-10vc5-jdk8-hang-progressutils.txt.tdump, > netbeans-10vc5-jdk8-hang.txt.tdump, netbeans-slow-00.npss, > netbeans-slow-01.npss, netbeans-startup-slow.npss, > open-file-slow-01.txt.tdump, open-file-slow-02.txt.tdump, > open-file-slow-03.txt.tdump, slow-stack-00.txt > > > I used to use NetBeans 8 on JDK8, it was tolerable, but slow. > Now I have a new laptop, I've tried nb8, nb10 on jdk8, jdk11, with g1gc, > cmsgc, other gc. They are all UNUSABLY slow. By which I mean, it takes over a > minute just to open a file. > Mostly this is because things are waiting for things waiting for very > inefficiently implemnted file I/O, editor parsing, or things like that. I've > watched a 12-core Xeon chip spend over 4 hours just attempting to handle the > Active Reference Queue Daemon thread. > The slowdown is somewhat incremental - I can escape it as long as I'm happy > to restart NetBeans every hour or so (which I'm not happy to do). > Attached a stack dump to get you started, this took over a minute to open a > 284-line Java file from idle. > Please feel free to ask all the obvious questions, although I'm fairly sure > all the obvious things have been done. Mostly, I've got GC down to a > negligible amount. > If there's one or more features of NetBeans I can disable to get acceptable > behaviour while still being able to realistically edit Java code, please tell > me and I will disable them because I am at the end of my rope after using > (and developing for) NetBeans for nearly 10 years. If I can get IntelliJ to > load a Java/Gradle project neatly before this gets fixed, I'm gone. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@netbeans.apache.org For additional commands, e-mail: commits-h...@netbeans.apache.org For further information about the NetBeans mailing lists, visit: https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists