I last commented when I was on 15.10, but was just hit by this on 16.04.
Again, EC2 t2.micro instance.
$ uname -a
Linux ip-172-31-45-223 4.4.0-22-generic #40-Ubuntu SMP Thu May 12 22:03:46 UTC
2016 x86_64 x86_64 x86_64 GNU/Linux
$ top
top - 21:32:32 up 6 days, 20 min, 1 user, load average: 1.01, 1.02, 0.96
Tasks: 135 total, 2 running, 133 sleeping, 0 stopped, 0 zombie
%Cpu(s): 0.0 us,100.0 sy, 0.0 ni, 0.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st
KiB Mem : 1014560 total, 426728 free, 215352 used, 372480 buff/cache
KiB Swap: 0 total, 0 free, 0 used. 733288 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
30 root 20 0 0 0 0 R 99.7 0.0 44:42.28 kswapd0
5434 ubuntu 20 0 40512 3620 3032 R 0.3 0.4 0:00.03 top
1 root 20 0 37796 5880 4008 S 0.0 0.6 0:25.73 systemd
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https://bugs.launchpad.net/bugs/1518457
Title:
kswapd0 100% CPU usage
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