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Bug 237901

Summary:	org.netbeans.modules.maven.api.FileUtilities.convertStringToFileObject: LowPerformance took 285785 ms.
Product:	projects	Reporter:	misterm <misterm>
Component:	Maven	Assignee:	Milos Kleint <mkleint>
Status:	RESOLVED FIXED
Severity:	normal	CC:	tnleeuw
Priority:	P3	Keywords:	PERFORMANCE
Version:	8.0
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	173062
Attachments:	nps snapshot

Description misterm 2013-11-01 18:17:20 UTC

Build: NetBeans IDE Dev (Build 20131028-99a08841d45d)
VM: Java HotSpot(TM) 64-Bit Server VM, 23.3-b01, Java(TM) SE Runtime Environment, 1.7.0_07-b11
OS: Windows 7

User Comments:
GUEST: I invoked intellisense to extend a super-class; I was typing the "extends ...." statement.

misterm: .



Maximum slowness yet reported was 285785 ms, average is 86238

Comment 1 misterm 2013-11-01 18:17:56 UTC

Created attachment 141786 [details]
nps snapshot

Comment 2 Milos Kleint 2013-11-01 18:28:03 UTC

misterm: please use a more recent jdk7 - update 7 is ancient and in other issues I've seen filesystem related slowness reports associated with pre update 21 and windows setups.

Comment 3 Milos Kleint 2013-11-27 15:21:57 UTC

http://hg.netbeans.org/core-main/rev/0c84cbd84df1

the changeset adds a simple root->charset cache that is reset on project reload, in that way repeated queries for one or more files in the same root are returned without touching the filesystem (with the possible exception of FileUtil.isparentof which is unavoidable)

consider fixed, not much more to do here given the current architecture (FileOwnerQuery)

Comment 4 Quality Engineering 2013-11-29 02:54:56 UTC

Integrated into 'main-silver', will be available in build *201311290002* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)

Changeset: http://hg.netbeans.org/main-silver/rev/0c84cbd84df1
User: Milos Kleint <mkleint@netbeans.org>
Log: #237901 remember source root->charset mapping, avoiding io touches on repeated queries. Resets on project reload.