I have exactly the same problem in several physical indexers. For example: # top top - 09:53:50 up 14 days, 15:24, 2 users, load average: 13.25, 31.35, 35.30 Tasks: 869 total, 1 running, 868 sleeping, 0 stopped, 0 zombie Cpu(s): 7.2%us, 1.5%sy, 0.0%ni, 91.3%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 65842216k total, 57581624k used, 8260592k free, 1530800k buffers But if we run "free": # free -m total used free shared buffers cached Mem: 64299 56687 7611 915 1496 46310 -/+ buffers/cache: 8881 55417 Swap: 2047 120 1927 Looks like"reserved" memory is being presented as "used" memory. Any hints? ... View more