force cpu and blkio thottle of kvm guests

kvm-force-blkio-throttle.sh

#!/bin/bash

cat /cgroup/blkio/libvirt/qemu/blkio.throttle.read_bps_device
cat /cgroup/blkio/libvirt/qemu/blkio.throttle.write_bps_device
cat /cgroup/blkio/libvirt/qemu/*/blkio.throttle.read_bps_device
cat /cgroup/blkio/libvirt/qemu/*/blkio.throttle.write_bps_device

# 10MBps
#BPSLIMIT=10485760

# 200MBps
#BPSLIMIT=209715200

# 50MBps
#BPSLIMIT=52428800

# 30MBps
BPSLIMIT=31457280

# unlimited / default
#BPSLIMIT=0

DEV_MAJOR=253
DEV_MINOR_LIST="0 1 2"

if [ -n "$1" ]
then
	BPSLIMIT="$1"
fi

virsh list --name | while read n
do
	[ -n "$n" ] || continue
	echo $n
	
	for DEV_MINOR in $DEV_MINOR_LIST
	do
		echo "$DEV_MAJOR:$DEV_MINOR $BPSLIMIT" > /cgroup/blkio/libvirt/qemu/$n/blkio.throttle.read_bps_device
		echo "$DEV_MAJOR:$DEV_MINOR $BPSLIMIT" > /cgroup/blkio/libvirt/qemu/$n/blkio.throttle.write_bps_device
	done
	
	cat "/cgroup/blkio/libvirt/qemu/$n/blkio.throttle.read_bps_device"
	cat "/cgroup/blkio/libvirt/qemu/$n/blkio.throttle.write_bps_device"
done

cat /cgroup/blkio/libvirt/qemu/blkio.throttle.read_bps_device
cat /cgroup/blkio/libvirt/qemu/blkio.throttle.write_bps_device
cat /cgroup/blkio/libvirt/qemu/*/blkio.throttle.read_bps_device
cat /cgroup/blkio/libvirt/qemu/*/blkio.throttle.write_bps_device

libvirt-set-cgroups-cpu-shares-by-vcpu.sh

virsh list --name | while read n
do
	[ -n "$n" ] || continue
	echo $n
	echo "/cgroup/cpu/libvirt/qemu/$n/cpu.shares"
	cat "/cgroup/cpu/libvirt/qemu/$n/cpu.shares"
	vcpu=$(virsh vcpucount --current --maximum  $n | head -n 1)
	shares=$((1024*$vcpu))
	echo "$shares" > "/cgroup/cpu/libvirt/qemu/$n/cpu.shares"
	cat "/cgroup/cpu/libvirt/qemu/$n/cpu.shares"
done