On Fri, Dec 16, 2016 at 10:00:36PM +0100, Stefan Priebe - Profihost AG wrote: > > Am 15.12.2016 um 07:46 schrieb Alexandre DERUMIER: > > does rollbacking the kernel to previous version fix the problem ? > > The culprit is the used tuned agent from Redhat > (https://github.com/redhat-performance/tuned). The used profile > virtual-host results in these problems. Stopping tuned or using another > profile like throughput-performance everything is fine again.
Interesting discovery. Have you filed a bug report about it? > after upgrading a cluster OS, Qemu, ... i'm experiencing slow and > volatile network speeds inside my VMs. > > Currently I've no idea what causes this but it's related to the host > upgrades. Before i was running Qemu 2.6.2. > > I'm using virtio for the network cards. Stefan
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