[FileChooser] Slow response issue when opening project

[lyh061619]

Apache NetBeans version

Apache NetBeans 20 release candidate

What happened

Clicking on the menu file ->Open Project takes about 6-8 seconds for the dialog box to pop up. Secondly, clicking on the ski bar in the project tree to browse the project file experience is not very good, resulting in slow response issues,

Selfsampler File:
selfsampler.zip

How to reproduce

No response

Did this work correctly in an earlier version?

No / Don't know

Operating System

win10

JDK

zulu21.28.85-ca-jdk21.0.0

Apache NetBeans packaging

Apache NetBeans binary zip

Anything else

No response

Are you willing to submit a pull request?

No

[matthiasblaesing]

This issue can't be acted upon:

• the message log is missing and no error is reported
• for "it is slow" problems, the IDE has a built-in profiler (Enable "Performance" symbol bar, first icon: )
• what is a "ski bar"?

[lyh061619]

This issue can't be acted upon:

* the message log is missing and no error is reported

* for "it is slow" problems, the IDE has a built-in profiler (Enable "Performance" symbol bar, first icon: ![image](https://private-user-images.githubusercontent.com/2179736/288492927-f078172e-ce58-4421-a4f7-17525aa437a6.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.CFTlmZpSj75D6BhPeRnM1wkgHMVW1CWD83j5Ij94JmQ))

* what is a "ski bar"?

I have added the issue log. This bug is really a fatal problem. It takes 7 seconds to open the project dialog box and pop up

[lalo-mx]

In my environment opening project dialog is also slow (25 seconds), using the profiler one method takes 24,319 ms
https://github.com/openjdk/jdk/blob/519ecd352a66633589f160db7390647d90e36b99/src/java.desktop/windows/classes/sun/awt/shell/Win32ShellFolder2.java#L897

Product Version: Apache NetBeans IDE 20
Java: 21.0.1; OpenJDK 64-Bit Server VM 21.0.1+12-LTS
Runtime: OpenJDK Runtime Environment 21.0.1+12-LTS
System: Windows 10 version 10.0 running on amd64; UTF-8; en_US (nb)

[lyh061619]

My computer uses an MVME hard drive, which cannot be that slow, but using the Netbeans IDE is slow. When checking the monitor, most threads are waiting or timeout, and the experience is very poor

Any interaction with disk IO is slow, such as:

1. Open Project

2. Delete or remove project

3. Open IDE to load project

[mbien]

does this also happen with the open file dialog?

both file choosers open instantly for me with no delay.

I am wondering if this is a variant of #6361, or some of the other JDK filechooser issues connected to disktop shortcuts on windows.

how long does this take to open?

    public static void main(String[] args) {
        JFileChooser jfs = new JFileChooser();
        jfs.showOpenDialog(null);
    }

[lyh061619]

does this also happen with the open file dialog?

both file choosers open instantly for me with no delay.

I am wondering if this is a variant of #6361, or some of the other JDK filechooser issues connected to disktop shortcuts on windows.

how long does this take to open?

    public static void main(String[] args) {
        JFileChooser jfs = new JFileChooser();
        jfs.showOpenDialog(null);
    }

Yes, I will use the test code you provided and run it on netbeans_ Default_ Options property in netbeans. conf:

-J-Djava. util. Arrays. useLegacyMergeSort=true samples the results as follows:

Selfsampler File:
selfsampler.zip

[mbien]

@lalo-mx Win32ShellFolder is used for the quick selection panel of the file chooser I believe.

there are multiple known issues connected to windows specific JDK code in that area, for example https://bugs.openjdk.org/browse/JDK-8305072
some are triggered by certain folders or links on your desktop.

Can you try to run NetBeans with: -J-Dnb.FileChooser.useShellFolder=false?

[lalo-mx]

@lalo-mx Win32ShellFolder is used for the quick selection panel of the file chooser I believe.

there are multiple known issues connected to windows specific JDK code in that area, for example https://bugs.openjdk.org/browse/JDK-8305072 some are triggered by certain folders or links on your desktop.

Can you try to run NetBeans with: -J-Dnb.FileChooser.useShellFolder=false?

Yes, that fixes it in my environment

[binh190305]

-J-Dnb.FileChooser.useShellFolder=false i have tried this code by add it in "D:\NetBeans-21\netbeans\etc\netbeans.conf" in netbeans_default_options line and it has fixed the bug that make open file or add library so slow