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List:       lxc-devel
Subject:    [lxc-devel] Questions related to limit CPU priority
From:       Oliver Schad <oliver.schad () automatic-server ! com>
Date:       2019-09-25 0:15:20
Message-ID: 20190925021520.36956548 () dickeberta
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Hi everybody,

I'm wondering, what the limit CPU priority should do: I see, that it
changes the container's cgroup "cpu.shares". However the base value of
cpu.shares is 1024, which is decreased by "10 - CPU priority"

So the minimum value of cgroup's CPU shares is 1014 with a LXC CPU
priority of "0". Because the weights for CPU time is relative to that
CPU share value, the CPU time of a container with the lowest priority
value 0 will only get 1% more CPU time in a concurrent load situation
compared to a default priority container - I guess most users wouldn't
expect that.

Do I overlook something?

I feature requests, which also include the above topic was opened by
Denis, https://github.com/lxc/lxd/issues/6231 - but because the issue
is more general, I would like to bring this specific topic here.

Best Regards
Oli

-- 
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Oliver Schad
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