limiting guest block i/o for qos

Hello, Does anyone know of any work in progress or any tricks to limit a guest's i/o requests to a specific throttled rate? I have guests that mount their filesystems via virtio, which are images served on an NFS server. Some of these guests will flood the server with requests and can then choke o

Re: limiting guest block i/o for qos

> On Thu, Nov 25, 2010 at 12:58:22AM -0500, T Johnson wrote: >> Hello, >> >> Does anyone know of any work in progress or any tricks to limit a >> guest's i/o requests to a specific throttled rate? I have guests that >> mount their filesystems via virtio, wh

Re: limiting guest block i/o for qos

On Mon, Nov 29, 2010 at 4:58 AM, Stefan Hajnoczi wrote: > On Mon, Nov 29, 2010 at 2:00 AM, T Johnson wrote: >> Hello, >> >> On Thu, Nov 25, 2010 at 3:33 AM, Nikola Ciprich >> wrote: >>> Hello Thomas, >>> I t hink blkio-cgroup really can't he

RHEL6 host / CentOS5.6 guest periodically very sluggish

Hello, I have a perplexing problem I'm hoping I might be able to get some help with. This is a RHEL6 kvm host, with 4 idle CentOS5.6 guests. 3 guests have 1 vpu, 1 guest has 4 vpu. Host is an 8 core/16 thread Nahalem class machine and is idle other than the KVM guests. Probably every 5-10 minutes