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Bug 257140 - Freeze in ParametersPanel
Summary: Freeze in ParametersPanel
Status: NEW
Alias: None
Product: java
Classification: Unclassified
Component: Refactoring (show other bugs)
Version: 8.2
Hardware: All All
: P3 normal (vote)
Assignee: Ralph Ruijs
Depends on:
Reported: 2015-12-14 15:35 UTC by Jesse Glick
Modified: 2017-08-15 07:26 UTC (History)
6 users (show)

See Also:
Issue Type: DEFECT
Exception Reporter: 221674

nps snapshot (15.12 KB, application/nps)
2015-12-14 15:35 UTC, Jesse Glick
dump of active threads (12.95 KB, text/plain)
2015-12-14 15:37 UTC, Jesse Glick

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Description Jesse Glick 2015-12-14 15:35:02 UTC
This issue was reported manually by jglick.
It already has 1 duplicates 

Build: NetBeans IDE Dev (Build 20151104-5022c03c8164)
VM: Java HotSpot(TM) 64-Bit Server VM, 25.66-b17, Java(TM) SE Runtime Environment, 1.8.0_66-b17
OS: Linux

User Comments:
jglick: Find Usages was running in one tab (looking up Maven repo usages I suppose). I pressed Alt-Shift-U on another type and the IDE froze. (For longer than 11s. More like a couple of minutes.)

Maximum slowness yet reported was 11445 ms, average is 11445
Comment 1 Jesse Glick 2015-12-14 15:35:03 UTC
Created attachment 157783 [details]
nps snapshot
Comment 2 Jesse Glick 2015-12-14 15:37:34 UTC
Created attachment 157784 [details]
dump of active threads

The slowness detector seems to have misclassified this completely. Attached a thread dump taken while the IDE was frozen for a couple minutes; AFAICT there was no disk activity at the time, or maybe only sporadic. It seems that ParametersPanel is doing some kind of complex calculation, and the event thread is blocked waiting for it.