Hi Prema On 28 September 2017 at 07:10, Premysl Kouril <premysl.kou...@gmail.com> wrote: > Hi, I work with Jakub (the op of this thread) and here is my two > cents: I think what is critical to realize is that KVM virtual > machines can have substantial memory overhead of up to 25% of memory, > allocated to KVM virtual machine itself. This overhead memory is not
I'm curious what sort of VM configuration causes such high overheads, is this when using highly tuned virt devices with very large buffers? > This KVM virtual machine overhead is what is causing the OOMs in our > infrastructure and that's what we need to fix. If you are pinning multiple guests per NUMA node in a multi-NUMA node system then you might also have issues with uneven distribution of system overheads across nodes, depending on how close to the sun you are flying. -- Cheers, ~Blairo __________________________________________________________________________ OpenStack Development Mailing List (not for usage questions) Unsubscribe: openstack-dev-requ...@lists.openstack.org?subject:unsubscribe http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
