Hi not that I tested this patch or the patch that followed (adding blkiotune command) ... but the way I understand, the cgroup blkio controller does only work for sync'd IO/queues. quote blkio-controller.txt from 2.6.37: Currently only sync IO queues are support. All the buffered writes are still system wide and not per group. When I last tested this (using manual cgroups commands), this seemed true. So may I ask how you use this and how this helps in which setup? Regards Dominik On 02/08/2011 07:38 AM, Gui Jianfeng wrote:
Hi
This patchset adds blkio cgroup support for qemu and lxc.
[PATCH 1/6] cgroup: Enable cgroup hierarchy for blkio cgroup [PATCH 2/6 v3] cgroup: Implement blkio.weight tuning API. [PATCH 3/6] Update XML Schema for new entries. [PATCH 4/6 v3] qemu: Implement blkio tunable XML configuration and parsing. [PATCH 5/6 v3] LXC: LXC Blkio weight configuration support. [PATCH 6/6] Add documentation for blkiotune elements.
Will post a patchset to implement virsh command "blkiotune" to tune blkio cgroup parameter later on.
v2 -> v3 Changes: o Remove an unused local variable o Rename virCgroup(Set/Get)Weight to virCgroup(Set/Get)BlkioWeight o Add documentation in docs/formatdomain.html.in o Update XML Schema for new entries.
docs/formatdomain.html.in | 10 ++++++++++ docs/schemas/domain.rng | 20 ++++++++++++++++++++ src/conf/domain_conf.c | 13 +++++++++++++ src/conf/domain_conf.h | 4 ++++ src/libvirt_private.syms | 2 ++ src/lxc/lxc_controller.c | 10 ++++++++++ src/qemu/qemu_cgroup.c | 16 +++++++++++++++- src/qemu/qemu_conf.c | 3 ++- src/util/cgroup.c | 41 ++++++++++++++++++++++++++++++++++++++++- src/util/cgroup.h | 4 ++++ 10 files changed, 120 insertions(+), 3 deletions(-)
Thanks Gui
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