Using 2014 SP1

During weekend maintenance, we're experiencing poor performance when a particular PO's maintenance is running. Webaccess is practically unusable and client performance is sporadic, with Not Responding messages showing frequently.

This server is a VM with 4 CPUs and 12gb RAM. The PO houses about 300 users with about 1tb tb data.

Last weekend's run took 34 hours to complete. Is that normal for above specs?

Maintenance Handler Threads were set to 4 and I just bumped to 8. Any issues with that?

On another note, how can we find and kill these processes if needed? This last run bled into Monday AM and users complained a bit.

Thanks - Jeff