[jira] [Created] (NETBEANS-9) IDE Freezes when reopening the Java Platform Shell more than 2 times.

["Carlos Quintanilla (JIRA)" <ji...@apache.org>]

Carlos Quintanilla created NETBEANS-9:
-----------------------------------------

             Summary: IDE Freezes when reopening the Java Platform Shell more than 2 times.
                 Key: NETBEANS-9
                 URL: https://issues.apache.org/jira/browse/NETBEANS-9
             Project: Netbeans
          Issue Type: Bug
          Components: java - JShell
    Affects Versions: 9.0
         Environment: D:\NetBeans\netbeans-donation-review\nbbuild\netbeans\bin\netbeans64.exe --jdkhome "C:\Program Files\Java\jdk-9"
Product Version: NetBeans IDE Dev (Build 20170614-unknown-revn)
Java: 9-ea; Java HotSpot(TM) 64-Bit Server VM 9-ea+173
Runtime: Java(TM) SE Runtime Environment 9-ea+173
System: Windows 10 version 10.0 running on amd64; Cp1252; en_US (nb)

D:\NetBeans\netbeans-donation-review\nbbuild\netbeans\bin\netbeans.exe --jdkhome "C:\Program Files (x86)\Java\jdk-9"
Product Version: NetBeans IDE Dev (Build 20170614-unknown-revn)
Java: 9-ea; Java HotSpot(TM) Server VM 9-ea+174
Runtime: Java(TM) SE Runtime Environment 9-ea+174
System: Windows 10 version 10.0 running on x86; Cp1252; en_US (nb)

E:\Workspace\netbeans-donation-review\nbbuild\netbeans\bin\netbeans64.exe --jdkhome "C:\Program Files\Java\jdk-9"
Product Version: NetBeans IDE Dev (Build 20170614-unknown-revn)
Java: 9-ea; Java HotSpot(TM) 64-Bit Server VM 9-ea+174
Runtime: Java(TM) SE Runtime Environment 9-ea+174
System: Windows Server 2012 R2 version 6.3 running on amd64; Cp1252; en_US (nb)

E:\Workspace\netbeans-donation-review\nbbuild\netbeans\bin\netbeans.exe --jdkhome "C:\Program Files (x86)\Java\jdk-9"
Product Version: NetBeans IDE Dev (Build 20170614-unknown-revn)
Java: 9; Java HotSpot(TM) Server VM 9+175
Runtime: Java(TM) SE Runtime Environment 9+175
System: Windows Server 2012 R2 version 6.3 running on x86; Cp1252; en_US (nb)
            Reporter: Carlos Quintanilla
            Priority: Minor
             Fix For: 9.0


Hi,

There seems to be a memory leak when reopening the JShell using the Menu: Tools > Open Java Platform Shell 2 or more times. 

Steps to reproduce:
- Windows 10 Pro x64
- Windows Server 2012 R2 x64

1. Open NetBeans x64 or x86. 
   E:\Workspace\netbeans-donation-review\nbbuild\netbeans\bin\netbeans64.exe --jdkhome "C:\Program Files\Java\jdk-9"
   E:\Workspace\netbeans-donation-review\nbbuild\netbeans\bin\netbeans.exe --jdkhome "C:\Program Files (x86)\Java\jdk-9"
   D:\NetBeans\netbeans-donation-review\nbbuild\netbeans\bin\netbeans64.exe --jdkhome "C:\Program Files\Java\jdk-9"
   D:\NetBeans\netbeans-donation-review\nbbuild\netbeans\bin\netbeans.exe --jdkhome "C:\Program Files (x86)\Java\jdk-9"

2. Click on Tools > Open Java Platform Shell
3. Immediately after, a new document sheet/tab is opened and a progress animation is displayed.
   Text: "Loading and initializing Java Shell. Please wait..."   
   During this time everything in the IDE is responsive and after few seconds Java Shell loads.
   
|  System Information:
|      Java version:    9-ea+174
|      Virtual Machine: Java HotSpot(TM) 64-Bit Server VM  9-ea+174
|      Classpath:
|  	E
|  	\Workspace\netbeans-donation-review\nbbuild\netbeans\java\modules\ext\nb-mod-jshell-probe.jar
|  
[1]-> 
4. Close the Java Shell document sheet/tab. 
5. Click again on Tools > Open Java Platform Shell.
6. Close the Java Shell document sheet/tab. 
7. Click again on Tools > Open Java Platform Shell.
8. ERROR: 
   The IDE becomes unresponsive for ~7 seconds, then a new document sheet/tab is opened with the progress animation displayed.
   Text: "Loading and initializing Java Shell. Please wait..."   
9. A new IDE notification is added to the notification list:
   Text: "Slowness detected. Was it a problem?"
   Priority: SILENT Category: Warning
   Not responsive for 7s. Do you want to report it?
10. Closing and re-opening Java Shell subsequent times will freeze the IDE for more and more seconds.

Notification: Warnings received:
8. Slowness detected. Was it a problem?   54s
7. Slowness detected. Was it a problem?   45s
6. Slowness detected. Was it a problem?   38s
5. Slowness detected. Was it a problem?   11s
4. Slowness detected. Was it a problem?    9s
3. Slowness detected. Was it a problem?    4s
2. No issue.
1. No issue.

11. Restart the IDE and open Java Shell Platform again.
   The Java Shell sheet/tab will load smoothly (the first 2 times), then it will happen again.
   
 Best Regards,
Carlos QT



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