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https://issues.apache.org/jira/browse/NETBEANS-6179?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17439919#comment-17439919
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Jaroslav Tulach commented on NETBEANS-6179:
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According to [^NetBeans126_OpenProject.nps] the EDT thread is blocked for 45s in
* com.formdev.flatlaf.ui.FlatFileChooserUI$FlatFileView.getIcon()
> Open Project dialog can take over 30 seconds to appear on Windows.
> ------------------------------------------------------------------
>
> Key: NETBEANS-6179
> URL: https://issues.apache.org/jira/browse/NETBEANS-6179
> Project: NetBeans
> Issue Type: Bug
> Components: ide - Performance
> Environment: Wndows10 Pro
> Java 17.0.1 (Zulu + JavaFX)
> NetBeans 12.6-rc2 (and earlier)
> Reporter: Scott Palmer
> Priority: Major
> Labels: performance
> Attachments: NetBeans126_OpenProject.nps, NetBeans126_OpenProject2.nps
>
>
> On Windows systems with disconnected mapped network drives, the "Open
> Project" dialog can take over 30 seconds to appear. The "Open File" dialog
> does not suffer from this issue.
> While attempts to actually access the unavailable network drives can
> logically lead to timeouts, since the open Project dialog will initially be
> browsing in folder unrelated to the disconnected drive letters, there is no
> reason that they should be holding up the initialization of the dialog.
> VisualVM snapshot data collected while triggering and waiting for the Open
> Project dialog is attached.
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