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Applies to Uptime Infrastructure Monitor versions 5 and 6 only. If you are using UIM 7 or later, see the latest Uptime Infrastructure Monitor documentation. |
The Java heap is a repository for Java objects and free memory. The rule is to increase the Java heap size when you have:
- a large number of service monitors.
- a large number of reports to run.
Adjusting the Java heap size
uptime Uptime Infrastructure Monitor is installed with a default Java Heap Size heap size value of 1 Gb. For optimal performance, we recommend a value of 1.5 Gb is usually recommended.
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When increasing the Java |
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heap size, make sure that the |
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operating system can support the new setting. If the OS does not have the desired amount of memory available exclusively for |
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UIM, then the |
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core |
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may fail on startup. |
Using RedHat, SuSE, and Solaris
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monitoring stations
To change the Java Heap Size, modify the <uptime install dir>/uptime.lax (or uptime4d.lax in Uptime Infrastructure Monitor 4) file to look like this:
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Java Heap Size is measured in bytes on UNIX and Linux systems. |
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# LAX.NL.JAVA.OPTION.JAVA.HEAP.SIZE.MAX |
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# ------------------------------------- # Max VM size in bytes lax.nl.java.option.java.heap.size.max=1500m |
Using Windows
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monitoring station
To change the Java
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heap size on a Microsoft Windows system, edit the following line in the <uptime install dir>/wrapper.conf file:
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wrapper.java.maxmemory=1500 |
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Java |
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heap size is measured in megabytes on Microsoft Windows systems. |
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