Last modified: 2014-10-08 07:29:57 UTC
See https://integration.wikimedia.org/monitoring/#h-integration-puppetmastermem These aren't even spikes, been that way for over a week. integration-puppetmaster$ top Mem: 2051756k total 1868016k used 183740k free 141520k buffers Swap: 1999868k total 0k used 1999868k free 1176136k cached PID USER VIRT RES SHR %CPU %MEM TIME+ COMMAND 1188 puppet 442m 323m 3936 2.7 16.1 761:47.59 puppet 865 ganglia 88908 20m 3364 2.0 1.0 329:16.34 gmond 2737 root 599m 34m 7784 0.3 1.7 16:01.52 salt-minion
The instance has 2GB memory, 1.1GB is Linux cached memory which is just holding in memory file that have been read. That cached memory is reclaimed as needed.