This is plaguing Horizon project Pi2 and Pi3 devices running Xenial
16.04.2 w/ kernel 4.4.0-1050-raspi2. From a pi2:
root@horizon-00000000a17d2187:~# uname -a
Linux horizon-00000000a17d2187 4.4.0-1050-raspi2 #57-Ubuntu SMP Wed Mar 22
12:52:22 UTC 2017 armv7l armv7l armv7l GNU/Linux
root@horizon-00000000a17d2187:~# free
total used free shared buff/cache available
Mem: 942128 149548 35456 494084 757124 239716
Swap: 0 0 0
Under these circumstances, the kernel's oom-killer will kill Wifi
processes (rtl_rpcd), systemd-udevd, our Ethereum client (geth), and
other critical processes in attempt to stay afloat rather than using
reclaimable RAM.
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https://bugs.launchpad.net/bugs/1655842
Title:
"Out of memory" errors after upgrade to 4.4.0-59
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