MongoDB and NUMA architecture

view story

http://serverfault.com – Our mongodb process is consistently using >100% of our CPU (this is on an Ubuntu 64-bit server on Linode) and we're casting about for performance improvements. One suggestion we found was that MongoDB and NUMA don't work well together: http://docs.mongodb.org/manual/administration/production-notes/#producti... I notice that /proc/sys/vm/zone_reclaim_mode is already set to 0 and numactl is not currently installed. My question: How do I find out whether our server is already NUMA-enabled and whether we should follow the advice at the above link to start Mongo with the following command? (HowTos)