Re: Connect-IT 9.20 default JVM size (299 Views)
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CA1518598
Posts: 47
Registered: ‎10-04-2007
Message 1 of 4 (326 Views)

Connect-IT 9.20 default JVM size

With Connect-IT 9.20 under Windows 2008, what are the default values of JVM size ? (-Xms & -Xmx parameters) ?

regards 

Informatique Banque Populaire
Trusted Contributor
DanielPetrov
Posts: 43
Registered: ‎10-21-2011
Message 2 of 4 (299 Views)

Re: Connect-IT 9.20 default JVM size

Hello,

 

As far as I know 256 minimum and 256 maximum. Typically this should not be altered (especially the maximum value) for more than 512.

 

Best Regards,

 

Daniel Petrov

Advisor
CA1518598
Posts: 47
Registered: ‎10-04-2007
Message 3 of 4 (288 Views)

Re: Connect-IT 9.20 default JVM size

Thanks Daniel,

do you have information about impact of JVM size on performance ?

Informatique Banque Populaire
Trusted Contributor
DanielPetrov
Posts: 43
Registered: ‎10-21-2011
Message 4 of 4 (279 Views)

Re: Connect-IT 9.20 default JVM size

Hello,

 

Yes of course. Typically the JVM requires contigious blocks of RAM, and it depends on how big the biggest contigious block of RAM is available in your machine. The maximum heap size of a Java application is limited by three factors: the process data model (32-bit or 64-bit) and the associated operating system limitations, the amount of virtual memory available on the system, and the amount of physical memory available on the system.

 

With other words as long as you can supply all three in the reasonable proportions, you should not experience any performance issues. Sometimes when running/executing huge scenarios from Connect IT, the system might hang for a while till it responds back and in such situations you are allowed to increase the JVM Maximum size to 512 but no more than that as it won't reduce drastically the time it takes for the scenario to get executed.

 

Best Regards,

 

Daniel Petrov

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