[Bug 1639932] Re: cpu constraints not being applied

[Kevin Metz]

Feedback in regards to why bug has been filed:
UnixBench parallel test final "System Benchmarks Index Score" run as root, on different size
/flavor instances/containers, with different numbers of "copies" of UnixBench.
instance cores ->
parallel tests
c20 c40
x10 2967.7 2844.6
x20 3802.4 3152.3
x40 4304.5 4185.0
x60 4312.2 4321.5

on an otherwise empty node, a c20 and c40 exhibited almost identical performance on a
60-copy UnixBench
the c20 must have used more than its allocated resources to match the
performance of an instance double its size
during a simultaneous identical (x40) test, the node with a c40 had 21-36% higher load
average than the node with a c20
this suggests the larger container is using more node resources, as it should (but
contradicts the benchmark results)
for some reason the larger instance did worse on x10, x20, and x40 tests – this should
be verified and investigated

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https://bugs.launchpad.net/bugs/1639932

Title:
  cpu constraints not being applied

Status in nova-lxd package in Ubuntu:
  New

Bug description:
  When lxd containers are launched, CPU constraints are either not being
  applied or not being honored by the server/hypervisor

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