My jira instance stop email notification periodically. When it happens we are not able to open mail queue page, it keep on processing that request. It generally happens when our instance process eat up all the allocated memory of server. currently we have 32 GB of memory.
Image PID Hard Faults/sec Commit (KB) Working Set (KB) Shareable (KB) Private (KB)
tomcat8.exe.x64 1752 4 19,506,084 19,329,272 180,456 19,148,816
it resolves when we restart our server but it occurs again in every 2 to 3 hours. Need to resolve this as soon as possible.