VisualVM 2.2 misses visualvm.conf at import

[catap]

Describe the bug

On the first start of VisualVM 2.2 I selected to import settings from 2.1.10, and it had missed custom visualvm.conf.

To Reproduce
Steps to reproduce the behavior:

~ $ find ~/.visualvm -name '*.conf'           
/home/catap/.visualvm/2.1.10/etc/visualvm.conf
~ $ ls ~/.visualvm/                           
2.1.10
~ $ visual                                                                                                                                
visualinfo  visualvm    
~ $ visualvm                                                                                                                              
~ $ find ~/.visualvm -name '*.conf' 
/home/catap/.visualvm/2.1.10/etc/visualvm.conf
~ $ ls ~/.visualvm/                 
2.1.10 2.2
~ $ 

Expected behavior
File should be copied.

VisualVM log

messages.log

Screenshots
It doesn't applicable.

Desktop (please complete the following information):

• OS: OpenBSD 7.7
• JDK version: openjdk version "21.0.6" 2025-01-21
• Version: 2.2

Additional context

[thurka]

Note that even if this is copied, it will not be used for the initial start.

[catap]

Sure, but I have visualvm_default_options="${visualvm_default_options} -J-Dsun.java2d.uiScale=3" here to use it on HIDPI screen and an update simple "forgot" that settings.

[thurka]

Sure, but I have visualvm_default_options="${visualvm_default_options} -J-Dsun.java2d.uiScale=3" here to use it on HIDPI screen and an update simple "forgot" that settings.

The fix will migrate etc/visualvm.conf, but it will only be used during the second startup.

[catap]

That's much better than nothing.

[catap]

BTW if you may suggest better way to support HIDPI screen, I'll be appricieted.

[thurka]

BTW if you may suggest better way to support HIDPI screen, I'll be appricieted.

You can try Flat LAF. It claims to scale on HiDPI displays and runs on Java 8 or newer. To start VisualVM with Flat Light LAF use the command below:
visualvm_22 $ bin/visualvm --cp:a platform/modules/ext/flatlaf-3.3.jar --laf com.formdev.flatlaf.FlatLightLaf

[catap]

Thanks, but it doesn't work here :(

~ $ visualvm --cp:a platform/modules/ext/flatlaf-3.3.jar --laf com.formdev.flatlaf.FlatLightLaf 
[0.412s][warning][os,thread] Failed to start thread "Unknown thread" - pthread_create failed (EAGAIN) for attributes: stacksize: 1024k, guardsize: 4k, detached.
[0.412s][warning][os,thread] Failed to start the native thread for java.lang.Thread "AWT-XAWT"
java.lang.OutOfMemoryError: unable to create native thread: possibly out of memory or process/resource limits reached
        at java.base/java.lang.Thread.start0(Native Method)
        at java.base/java.lang.Thread.start(Thread.java:1526)
        at java.desktop/sun.awt.X11.XToolkit.<init>(XToolkit.java:445)
        at java.desktop/sun.awt.PlatformGraphicsInfo.createToolkit(PlatformGraphicsInfo.java:41)
        at java.desktop/java.awt.Toolkit.getDefaultToolkit(Toolkit.java:595)
        at java.desktop/java.awt.Window.getToolkit(Window.java:1380)
        at java.desktop/java.awt.Window.init(Window.java:523)
        at java.desktop/java.awt.Window.<init>(Window.java:554)
        at java.desktop/java.awt.Frame.<init>(Frame.java:428)
        at org.netbeans.core.startup.Splash.setRunning(Splash.java:161)
        at org.netbeans.core.startup.Main.start(Main.java:292)
        at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:98)
        at java.base/java.lang.Thread.run(Thread.java:1583)
[0.424s][warning][os,thread] Failed to start thread "Unknown thread" - pthread_create failed (EAGAIN) for attributes: stacksize: 1024k, guardsize: 4k, detached.
[0.424s][warning][os,thread] Failed to start the native thread for java.lang.Thread "XToolkt-Shutdown-Thread"
~ $

BTW Intellij IDEA works on the same machine.

[catap]

and that issue wasn't related to VisualVM. It was related to a patch which I had tested O:-)

Without it, it did started, but without -J-Dsun.java2d.uiScale=3 it doesn't scale anything, and I haven't see any differences with or without FlatLAF.

[thurka]

Fixed in master.

HiDPI and LAF is off-topic here. If you have more question please use our feedback email address.

[neilcsmith-net]

FlatLaf is also now the only properly supported LaF in the NetBeans platform.