Am 19.12.2016 um 12:03 schrieb Stefan Hajnoczi: > 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?
As we're not using RHEL, nor CentOS i didn't expect this to make sense ;-) I just believed that something in the kernel changed. Greets, Stefan >> 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 >
