Documentation -> Troubleshooting
OpenSIPS does not start - where to look and what do to if your OpenSIPS does not start
Memory errors troubleshooting - how to troubleshoot certain memory errors you get from the OpenSIPS memory manager
Increasing memory size - how to increase the memory (shared or private) that OpenSIPS uses.
My OpenSIPS is crashing - how to provide more information to the OpenSIPS developers