What is the default -Xms and -Xmx setting for ISA 4. I saw another post concerning an unexpected crash where the recommendation was to increase the heap size in the rcpinstall.properties file. The example given was -Xmx 1024. Is that the recommended max heap?
I have the crashes as well, usually several times a day as I use the tool heavily.
Thanks in advance.
riddlemo 20000020RR33 Posts
Re: ISA 4 default min and max heap2009-02-16T20:54:24ZThis is the accepted answer. This is the accepted answer.The default maximum heap is 512M. IBM Supported does not have a documented maximum recommended heap size. However, if the cause is an OutOfMemeoryException, increasing the heap may help. You can add the -DXmx parameter to rcpinstall.propeties or to the rcplauncher command line. Check the logs in the workspace logs directory (IBM/isav4/logs in the user's home directory) to see if there is a memory related error. The logs are most easily viewed using a browser. Internet Explorer or Firefox will format the XML files for easier viewing.
jborgers 110000FKQH2 Posts
Re: ISA 4 default min and max heap2010-01-13T17:49:30ZThis is the accepted answer. This is the accepted answer.
- riddlemo 20000020RR
This is helpful. However, I tried to change the vm arguments as you described and it did not work for me. In the log file I found the location of the vm arguments.
The vm arguments are set in the file:
in location on my disk:
C:\Program Files (x86)\IBM\IBM Support Assistant v41\rcp\eclipse\plugins\com.ibm.rcp.j2se.win32.x86_188.8.131.52 90211a-200903301321\
MAT is running in the ISA eclipse host IBM jvm. It's settings are:
Which seem quite ridiculous to me.
I recommend removing the -Xmn parameter for the new space size. Let this be handled by the gencon garbage collector itself. This will speedup the processing. For me it now takes about a minute to process a 1 GB heap. I have -Xmx1200m and -Xms256m. Before, I could just not process this heap dump, it kept on processing all day to get to 2% progress.