This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.

Bug 232219 - org.n.m.masterfs.filebasedfs.utils.FileChangedManager.exists: LowPerformance took 22075 ms due to slow IO
Summary: org.n.m.masterfs.filebasedfs.utils.FileChangedManager.exists: LowPerformance ...
Status: RESOLVED FIXED
Alias: None
Product: projects
Classification: Unclassified
Component: Generic Infrastructure (show other bugs)
Version: 7.4
Hardware: All All
: P3 normal (vote)
Assignee: Milos Kleint
URL:
Keywords: PERFORMANCE
: 194866 238349 (view as bug list)
Depends on:
Blocks:
 
Reported: 2013-07-03 19:24 UTC by Exceptions Reporter
Modified: 2016-06-24 14:26 UTC (History)
3 users (show)

See Also:
Issue Type: DEFECT
Exception Reporter: 201890

Attachments
nps snapshot (18.37 KB, application/nps)
2013-07-03 19:24 UTC, Exceptions Reporter 		Details
nps snapshot (31.38 KB, application/nps)
2013-08-26 12:25 UTC, xrew 		Details
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Exceptions Reporter 2013-07-03 19:24:24 UTC 
This bug was originally marked as duplicate of bug 227293, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE Dev (Build nbms-and-javadoc-11211-on-20130627)
VM: Java HotSpot(TM) 64-Bit Server VM, 23.25-b01, Java(TM) SE Runtime Environment, 1.7.0_25-b17
OS: Windows 7

User Comments:
GUEST: Right clicked on empty spot in projects panel. Wanted to create a new project, but the menu never came up.



Maximum slowness yet reported was 22075 ms, average is 22075
Comment 1 Exceptions Reporter 2013-07-03 19:24:25 UTC 
Created attachment 136671 [details]
nps snapshot
Comment 2 Jaroslav Havlin 2013-07-08 09:08:53 UTC 
o.n.m.project.ui.actions.RecentProjects.getPopupPresenter()
calls o.o.filesystems.URLMapper.findFileObject(), which calls File.exists(),
from EDT.
It might be called in background by the Project Support.
But I'm not sure whether this can (or should) be fixed.
Milos, please evaluate. Thank you.
Comment 3 xrew 2013-08-26 12:25:13 UTC 
Created attachment 139249 [details]
nps snapshot

several scala projects (inported from source), tabed between src
Comment 4 Milos Kleint 2013-11-28 14:34:56 UTC 
http://hg.netbeans.org/core-main/rev/351aa7ca284b
Comment 5 Milos Kleint 2013-12-02 07:46:12 UTC 
*** Bug 238349 has been marked as a duplicate of this bug. ***
Comment 6 Tomas Stupka 2016-06-24 14:26:59 UTC 
*** Bug 194866 has been marked as a duplicate of this bug. ***