perfSONAR User Q&A and Other Discussion

[Rod James Bio <>]

Hello everyone,

I updated my perfsonar to 3.4 and it was returning an undefined after checking the graphs, similar to this:

http://www.perfsonar.net/about/faq/#Q68

After doing the suggestion, i.e. restart cassandra and httpd, I noticed that cassandra was not starting with this on the cassandra logfile:

Error occurred during initialization of VM
Could not reserve enough space for object heap
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

Does anyone have any suggestion on how to fix/work-around this?

Regards,