Hi
I am playing with cgroups and try to limit block io for guests.
The proof of concept is:
# mkdir /dev/cgroup/blkio
# mount -t cgroup -o blkio blkio /dev/cgroup/blkio/
# cd blkio/
# mkdir test
# cd test/
# ls -l /dev/vdisks/kirk
lrwxrwxrwx 1 root root 7 2011-01-06 13:46 /dev/vdisks/kirk -
On Thu, Jan 06, 2011 at 02:15:37PM +0100, Dominik Klein wrote:
Hi
I am playing with cgroups and try to limit block io for guests.
The proof of concept is:
# mkdir /dev/cgroup/blkio
# mount -t cgroup -o blkio blkio /dev/cgroup/blkio/
# cd blkio/
# mkdir test
# cd test/
# ls -l
Did you just echo the main qemu-kvm PID, or did you also
add the PIDs of every thread too ? From this description
of the problem, I'd guess you've only confined the main
process thread and thus the I/O VCPU threads are not
confined.
That was indeed correct. I was mislead by the fact that no
On Thu, 06 Jan 2011 14:15:37 +0100
Dominik Klein d...@in-telegence.net wrote:
Hi
I am playing with cgroups and try to limit block io for guests.
The proof of concept is:
# mkdir /dev/cgroup/blkio
# mount -t cgroup -o blkio blkio /dev/cgroup/blkio/
# cd blkio/
# mkdir test
# cd test/
qemu consists of several threads. Cgroup works per thread now.
Could you double check all threads for qemu are in a cgroup ?
I think you have to write all thread-ID to tasks file when you
move qemu after starting it.
As stated yesterday: Yes, that was the problem. Works as expected now,
