Earlier today, the website was unavailable. Tomcat crashed, with this error message
OpenJDK 64-Bit Server VM warning: INFO: os::commit_memory(0x00007f57dfafb000, 12288, 0) failed; error='Cannot allocate memory' (errno=12)
There is insufficient memory for the Java Runtime Environment to continue.
Native memory allocation (mmap) failed to map 12288 bytes for committing reserved memory.
An error report file with more information is saved as:
I have restarted tomcat, which resolved the outage. It is likely that this will happen again though, until we re-arrange memory restrictions.