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Free memory is running low [message #1803650]

Wed, 06 March 2019 03:53

Eclipse User

When I saved the project, a low memory warning appeared, and then my outline window could not display the function and structure type I defined. How can I solve this problem?

Re: Free memory is running low [message #1803653 is a reply to message #1803650]

Wed, 06 March 2019 04:26

Eclipse User

Follow the install guide of the Eclipse Titan ( see https://www.eclipse.org/downloads/download.php?file=/titan/Eclipse_installationguide.pdf ), especially chapter 5.2:

5.2. Configuring Java
You might need to modify your eclipse.ini file (usually located in the same directory as your eclipse executable.)
It is suggested to have at least 1GB and recommended 2 GB free memory per 1 million TTCN-3/ASN.1 source code lines (but it strongly depends on the code complexity). In Java it is controlled via the Xmx option.

For example, if Java 1.6 or 1.7 is applied and a project of 2 million TTCN-3 code lines is edited, the suggested settings in eclipse.ini are these:

-vmargs
-XX:MaxPermSize=2048M
-Dosgi.requiredJavaVersion=1.7
-Xms1024M
-Xmx4g

If Java 1.8 is used then MaxPermSize is ignored, its support is removed. Use these settings instead:

-vmargs
-Dosgi.requiredJavaVersion=1.8
-XX:+UseG1GC
-Xms1024M
-Xmx4g

NOTE: If you cannot edit the eclipse.ini file, you can start eclipse with flags. For example

eclipse  -vmargs  -Xmx4g

modifies the maximum memory allocation for the virtual machine.

Hopefully this helps.
Best regards
Jeno

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