How to get a Thread Dump: More precisely, assuming you are on Windows:
- Open a command window (cmd.exe) and start NetBeans IDE from the command window. Wait for the freeze to happen. - Press Ctrl-Break in the console window. - There will now be a thread dump in the console window. Copy all of that text into a text file. - Post here. On Mon, Mar 25, 2019 at 7:16 PM Lars Bruun-Hansen <[email protected]> wrote: > > Re proxy: NB is unfortunately not as good with proxies as your browser is, so > the fact that you can see it working in Firefox, IE, Chrome or whatever > doesn't prove anything. > > In any case, in general for a deadlocked Java application - and NB is indeed > just a Java application - you'll need to produce what is known as a Thread > Dump. With Java this can be a little tricky to produce because the Java eco > system will offer you multiple ways of producing a Thread Dump but if your > application, in this case NB, is truly in a deadlock then only one of these > methods will actually work. The method which will work is known as the > Ctrl+Break Method.(forget about jstack, VisualVM or all the other methods). > You can read more about the method here: > https://docs.oracle.com/javase/8/docs/technotes/guides/troubleshoot/tooldescr019.html > (hasn't changed with later versions of Java, I think) > > To summarize: Start NB from the command prompt instead of from a menu. When > the deadlock occurs then use the Ctrl+Break method and then you have a thread > dump file. Post the file here. Tada! With this information it is normally > possible to pinpoint exactly what the problem is. > > /Lars > > > On Mon, Mar 25, 2019 at 2:25 PM Thomson, Duncan <[email protected]> wrote: >> >> If you install NB on a different machine do you get the same problem? If >> so, then you have successfully duplicated the issue and you can post details >> on your environment and exactly how you did the install so that someone can >> try to debug. It’s quite possible it’s a bug, but the first step to getting >> it fixed is to find a way to reproduce it. >> >> That’s just my opinion as a user. >> >> >> Sent with BlackBerry Work >> (www.blackberry.com) >> >> From: Greenberg, Gary <[email protected]> >> Date: Sunday, Mar 24, 2019, 6:27 PM >> Cc: [email protected] <[email protected]> >> Subject: [EXT] RE: NB10 freezes while downloading javadoc >> >> I don’t think it is a proxy issue. >> >> I can easily access Javadoc from the browser without any security issues. >> >> Besides, it is occurring when I refer to my own code. It doesn’t have to go >> outside for that. >> >> BTW, frequency of these freezes increasing exponentially. >> >> A week ago it occurred once. Yesterday – twice, This morning – every 30-40 >> min. Now it occurs every 5 minutes, which makes any coding impossible. >> >> >> >> Gary Greenberg >> >> Staff Software Engineer >> >> Data Product Development, BI-A >> >> E: [email protected] >> >> M: 650-269-7902 >> >> >> >> >> >> From: Leo Donahue <[email protected]> >> Sent: Sunday, March 24, 2019 6:15 PM >> To: Greenberg, Gary <[email protected]> >> Cc: [email protected] >> Subject: Re: NB10 freezes while downloading javadoc >> >> >> >> >> >> On Sun, Mar 24, 2019, 19:49 Greenberg, Gary <[email protected]> wrote: >> >> It happens very often (8 times for me today), but not always and not at the >> same place. >> It is impossible to provide step-by-step instructions. You just need to edit >> Java code and wait it to occur. >> >> Usually it happened when you hit a dot after class variable and trying to >> select a method from the prompt list. >> >> Is it possible your internet proxy restricts access or some other internal >> security scanning process? >> >> >> >> Gary Greenberg >> >> Staff Software Engineer >> >> Data Product Development, BI-A >> >> E: [email protected] >> >> M: 650-269-7902 >> >> >> >> >> >> From: Geertjan Wielenga <[email protected]> >> Sent: Sunday, March 24, 2019 4:22 PM >> To: Greenberg, Gary <[email protected]> >> Subject: Re: NB10 freezes while downloading javadoc >> >> >> >> You're going to need to write to the whole mailing list and you're going to >> need to provide step by step instructions for reproducing the problem. >> >> >> >> Gj >> >> >> >> On Sun, Mar 24, 2019 at 11:58 PM Greenberg, Gary <[email protected]> wrote: >> >> I did file the issue (2304) and attached thread dump I produced with >> >> jcmd 16140 Thread.print >> >> >> >> I used to do it with kill -3 on the Mac, but it does not work on the Windows >> box. >> >> Dump does look small to me and it did not terminate the process. >> Hopefully, you can derive something from it. >> >> >> >> Gary Greenberg >> >> Staff Software Engineer >> >> Data Product Development, BI-A >> >> E: [email protected] >> >> M: 650-269-7902 >> >> >> >> >> >> From: Greenberg, Gary <[email protected]> >> Sent: Sunday, March 24, 2019 3:24 PM >> Cc: [email protected] >> Subject: RE: NB10 freezes while downloading javadoc >> >> >> >> I did describe when it is happening. It does not happened every time, >> though, and I do not know when it will happen and what is causing it. >> >> Would you remind me what to do, to get a thread dump when it happen next >> time? I will attach it to the ticket. >> >> >> >> Gary Greenberg >> >> Staff Software Engineer >> >> Data Product Development, BI-A >> >> E: [email protected] >> >> M: 650-269-7902 >> >> >> >> >> >> From: Geertjan Wielenga <[email protected]> >> Sent: Sunday, March 24, 2019 3:16 PM >> To: Greenberg, Gary <[email protected]> >> Cc: [email protected] >> Subject: Re: NB10 freezes while downloading javadoc >> >> >> >> If you can provide exact and precise steps for someone to reproduce from >> scratch, someone can look into it, otherwise not. >> >> >> >> Gj >> >> >> >> On Sun, Mar 24, 2019 at 10:23 PM Greenberg, Gary <[email protected]> wrote: >> >> That freeze happened to me for the fifth time today. It annoys to no end. >> >> Especially, that I am on the tight schedule for my project and pushing >> deadline. >> >> I am filing a bug. >> >> >> >> Gary Greenberg >> >> Staff Software Engineer >> >> Data Product Development, BI-A >> >> E: [email protected] >> >> M: 650-269-7902 >> >> >> >> >> >> From: Greenberg, Gary <[email protected]> >> Sent: Sunday, March 24, 2019 12:21 PM >> To: [email protected] >> Subject: NB10 freezes while downloading javadoc >> >> >> >> After I selected addAll from the prompt, Netbeans generated this function >> call in the code and freezes. >> >> “Downloading HTTP Javadoc” message is on the bottom bar. >> >> It happened couple more times before and I could only kill IDE through the >> task manager. >> >> Nothing is in the log file, though. >> >> Does anyone facing the same problem? How do you deal with that? Can I avoid >> it by changing some settings? --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected] For further information about the NetBeans mailing lists, visit: https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
