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Bug 254510

Summary:	com.sun.tools.javac.jvm.ClassReader.fillIn: LowPerformance took 5877 ms.
Product:	java	Reporter:	lolo_101 <lolo_101>
Component:	Compiler	Assignee:	Dusan Balek <dbalek>
Status:	RESOLVED WONTFIX
Severity:	normal	CC:	lolo_101, MarkFlacy
Priority:	P3	Keywords:	PERFORMANCE
Version:	8.1
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	219288
Attachments:	nps snapshot

Description lolo_101 2015-08-19 12:58:46 UTC

This bug was originally marked as duplicate of bug 251825, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE 8.1 Beta (Build 201508041349)
VM: Java HotSpot(TM) 64-Bit Server VM, 25.51-b03, Java(TM) SE Runtime Environment, 1.8.0_51-b16
OS: Windows 7

User Comments:
Lolo_101: Normal java code edition... 39 open maven projects.



Maximum slowness yet reported was 5877 ms, average is 5877

Comment 1 lolo_101 2015-08-19 12:58:49 UTC

Created attachment 155452 [details]
nps snapshot

Comment 2 Dusan Balek 2015-09-24 14:26:28 UTC

As can be seen from the attach profiler snapshot - all IDE activity seems to be blocked by an extremely slow IO (usually java.io.WinNTFileSystem.list).