Occasionally my created instances will go haywire looking for swap.
top - 04:05:31 up 17 days, 1:37, 1 user, load average: 2.01, 2.05, 1.66
Tasks: 134 total, 5 running, 129 sleeping, 0 stopped, 0 zombie
%Cpu(s): 4.7 us, 94.7 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.3 si, 0.3 st
KiB Mem: 2047128 total, 1767364 used, 279764 free, 340856 buffers
KiB Swap: 0 total, 0 used, 0 free. 401348 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
33 root 20 0 0 0 0 R 82.0 0.0 5562:26 kswapd0
9687 root 20 0 398292 71252 12652 S 5.3 3.5 22:41.47 .cadvisor
echo 3 > /proc/sys/vm/drop_caches
seemed to fix it, at least temporarily.