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Bug 241627

Summary:	org.netbeans.modules.maven.api.FileUtilities.convertStringToUri: LowPerformance took 20175 ms.
Product:	guibuilder	Reporter:	Exceptions Reporter <exceptions_reporter>
Component:	Code	Assignee:	issues@guibuilder <issues>
Status:	NEW ---
Severity:	normal	Keywords:	PERFORMANCE
Priority:	P3
Version:	7.3
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	189333
Attachments:	nps snapshot

Description Exceptions Reporter 2014-02-10 10:01:40 UTC

Build: NetBeans IDE 7.3.1 (Build 201306052037)
VM: Java HotSpot(TM) Client VM, 23.25-b01, Java(TM) SE Runtime Environment, 1.7.0_25-b17
OS: Windows 7

User Comments:
GUEST: Hilighting a section of code, right-clicking to copy selection. Context menu took a long time to come up.

GUEST: Dragging Tabbed Pane on Panel took a long time.



Maximum slowness yet reported was 20175 ms, average is 11756

Comment 1 Exceptions Reporter 2014-02-10 10:01:42 UTC

Created attachment 144975 [details]
nps snapshot

Comment 2 Milos Kleint 2014-02-10 13:26:13 UTC

one call to native IO method takes a long time. Originates in form editor.

Comment 3 Quality Engineering 2014-02-14 02:52:04 UTC

Integrated into 'main-silver', will be available in build *201402140001* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)

Changeset: http://hg.netbeans.org/main-silver/rev/dd1461dd0061
User: Tomas Pavek <tpavek@netbeans.org>
Log: #241627: more diagnostics, printing stacktrace where a group was removed unexpectedly

Comment 4 Tomas Pavek 2014-02-25 10:23:33 UTC

The above changeset has wrong bug number in the log message, should have been bug 240634.

Comment 5 Tomas Pavek 2014-02-25 10:45:03 UTC

Currently two reports, the first one does not seem to show any long FileUtilities.convertStringToUri call (and nothing from GUI builder), in the second report there's a long call which directly leads to a long call of native method for getting file attributes. I.e. this is a stuck file system, likely  overloaded by other I/O operations. We can't do anything about that.

In the second snapshot there's a project classloader requested, which is supposed to be already created (so cheap) but maybe it is not always the case in maven projects, and in this particular case we won't need it anyway as loading a module class (for tabbed pane support) - so potentially could determine that before trying project classloader. But not sure if it is worth the effort.