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# citrix-vads
Slackbot
10/31/2023, 8:34 AMThis message was deleted.
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Eirik Vesterhus / Intility AS
10/31/2023, 9:19 AMQuakeworld! That takes me back. They are gaming on these VDAs?
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Michiel Roos
10/31/2023, 9:21 AMHaha, I just changed the executable names to protect the guilty 🙂
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jvitech
10/31/2023, 11:33 AMantivirus? Was it working before? Any change since it doesn't?
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Jon Bucud
10/31/2023, 3:10 PMConsidering this is a 10 year old app, I'm assuming you've already tried constraining what it's trying to preallocate for contiguous memory from the app side? ie. is there a JAVA_OPTS="-Xms###m *-Xmx*###m" min/max setting in an app config file or try -Xmx -Xms -Xss params for the published JVMs?
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Rachel Berry
10/31/2023, 6:14 PMWe have some info on free JVM monitoring options - Eclipse etc https://www.eginnovations.com/blog/free-java-monitoring-tools-pros-cons/
Rachel Berry
10/31/2023, 6:16 PMhttps://www.eginnovations.com/blog/how-to-enhance-performance-java-applications/ Section 3 explains the Xms stuff @Jon Bucud suggests a little more
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Rachel Berry
10/31/2023, 7:50 PMAsked one of the APM team who make our Java/.NET monitoring tools and she said System.OutOfMemoryException hints at C# application (not Java). The namespace System is all Microsoft. https://learn.microsoft.com/en-us/dotnet/api/system.outofmemoryexception?view=net-7.0 could it be a C# app is depriving the Java app or interfering with it?
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Michiel Roos
11/01/2023, 4:06 PMThank you all for the suggestion! We will look further in it but probably will try to explain to the users that they don't need to keep this application 4 times in the same session 🙂
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