Peter et. al,
I am coming again with this series, hoping this is a better time for you all to
look at it.
I am *not* going as far as marking cpuacct deprecated, because I think it
deserves a special discussion (even though my position in this matter is widely
known), but all the infrastructure to
Commit 8f618968 changed stop_task to do the same bookkeping as the
other classes. However, the call to cpuacct_charge() doesn't affect
the scheduler decisions at all, and doesn't need to be moved over.
Moreover, being a kthread, the migration thread won't belong to any
cgroup anyway, rendering thi
exec_clock already provides per-group cpu usage metrics, and can be
reused by cpuacct in case cpu and cpuacct are comounted.
However, it is only provided by tasks in fair class. Doing the same for
rt is easy, and can be done in an already existing hierarchy loop. This
is an improvement over the in
The CPU cgroup is so far, undocumented. Although data exists in the
Documentation directory about its functioning, it is usually spread,
and/or presented in the context of something else. This file
consolidates all cgroup-related information about it.
Signed-off-by: Glauber Costa
---
Documentati
We already track multiple tick statistics per-cgroup, using
the task_group_account_field facility. This patch accounts
guest_time in that manner as well.
Signed-off-by: Glauber Costa
CC: Peter Zijlstra
CC: Paul Turner
---
kernel/sched/cputime.c | 10 --
1 file changed, 4 insertions(+),
From: Peter Zijlstra
In order to avoid having to do put/set on a whole cgroup hierarchy
when we context switch, push the put into pick_next_task() so that
both operations are in the same function. Further changes then allow
us to possibly optimize away redundant work.
[ glom...@openvz.org: incor
Context switches are, to this moment, a property of the runqueue. When
running containers, we would like to be able to present a separate
figure for each container (or cgroup, in this context).
The chosen way to accomplish this is to increment a per cfs_rq or
rt_rq, depending on the task, for each
This patch changes the calculation of nr_context_switches. The variable
"nr_switches" is now used to account for the number of transition to the
idle task, or stop task. It is removed from the schedule() path.
The total calculation can be made using the fact that the transitions to
fair and rt cla
The file cpu.stat_percpu will show various scheduler related
information, that are usually available to the top level through other
files.
For instance, most of the meaningful data in /proc/stat is presented
here. Given this file, a container can easily construct a local copy of
/proc/stat for int
From: Tejun Heo
cpuacct being on a separate hierarchy is one of the main cgroup
related complaints from scheduler side and the consensus seems to be
* Allowing cpuacct to be a separate controller was a mistake. In
general multiple controllers on the same type of resource should be
avoided,
All the information we have that is needed for cpuusage (and
cpuusage_percpu) is present in schedstats. It is already recorded
in a sane hierarchical way.
If we have CONFIG_SCHEDSTATS, we don't really need to do any extra
work. All former functions become empty inlines.
Signed-off-by: Glauber Cos
From: Tejun Heo
When cgroup files are created, cgroup core automatically prepends the
name of the subsystem as prefix. This patch adds CFTYPE_NO_PREFIX
which disables the automatic prefix.
This will be used to deprecate cpuacct which will make cpu create and
serve the cpuacct files.
Signed-off
On 05/27/2013 02:12 PM, Andrey Vagin wrote:
transmit pair of veth names to criu via the option --veth-pair
v2: unset IFS and delete eval from vps-rst
Signed-off-by: Andrey Vagin
---
scripts/vps-rst.in | 15 +--
src/lib/hooks_ct.c | 18 ++
2 files changed, 27 ins
It will be used for resuming CT with help CRIU.
CRIU restores veth devices and configures them inside CT,
so vzctl should configures them on the host side.
Signed-off-by: Andrey Vagin
---
include/types.h | 2 ++
scripts/vps-netns_dev_add.in | 5 -
src/lib/hooks_ct.c
transmit pair of veth names to criu via the option --veth-pair
v2: unset IFS and delete eval from vps-rst
v3: fix comments from Kir
Signed-off-by: Andrey Vagin
---
scripts/vps-rst.in | 12 ++--
src/lib/hooks_ct.c | 16 +---
2 files changed, 23 insertions(+), 5 deletions(-)
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