Re: [libvirt-users] Real time threads don't work in libvirt containers under CentOS 7.3
On Mon, Feb 06, 2017 at 09:32:29AM -0800, Peter Steele wrote:
We've been using libvirt based containers under CentOS 7 and
everything has
been working fine. One application we run in our containers is ctdb, which
uses SCHED_FIFO (real time) threads. This has been working without problems
until our recent upgrade to CentOS 7.3. For some reason, ctdb is no longer
able to create real time threads, and I've tried a simple program myself
that confirms this. The same program works fine on the hypervisor so I know
the kernel supports real time. Does anyone know what may have changed in
CentOS 7.3 that breaks real time threads in libvirt containers?
If I had to guess, perhaps some tunable in cgroups is denying execution
time ?
Regards,
Daniel
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