[lxc-users] Profile settings to limit RAM and SWAP

[Ron Kelley]

Greetings all,

Running LXD 2.14 on Ubuntu 16.04 and need to find a way to properly set limits for RAM and SWAP for my containers.

The goal: profile 512MB of RAM and 512MB of swap per container (total 1G)


My current profile:
--------------------
config:  limits.cpu: "2"
  limits.memory: 512MB
  limits.memory.swap.priority: “1"
  raw.lxc: lxc.cgroup.memory.memsw.limit_in_bytes = 1512M
--------------------



However, according to “top” and “free -m”, the available memory = (RAM - ProcessesUsed) and does not include swap.  Example:
--------------------
top - 12:08:40 up 1 min,  0 users,  load average: 0.59, 1.12, 2.23
Tasks:  19 total,   2 running,  17 sleeping,   0 stopped,   0 zombie
%Cpu(s): 11.8 us,  4.4 sy,  0.0 ni, 82.3 id,  0.2 wa,  0.0 hi,  1.4 si,  0.0 st
KiB Mem :   524288 total,   263776 free,    75492 used,   185020 buff/cache
KiB Swap:  1024000 total,  1019936 free,     4064 used.   263776 avail Mem
--------------------

In the above output, I would expect to see about 1263776 avail Mem (Swap free + RAM free).  

What am I missing?

-Ron