Apply the cgroup-io-throttle controller to the opportune kernel functions.
Both accounting and throttling functionalities are performed by
cgroup_io_throttle().
Signed-off-by: Andrea Righi [EMAIL PROTECTED]
---
block/blk-core.c |4
fs/aio.c | 12
Documentation of the block device I/O controller: description, usage,
advantages and design.
Signed-off-by: Andrea Righi [EMAIL PROTECTED]
---
Documentation/controllers/io-throttle.txt | 409 +
1 files changed, 409 insertions(+), 0 deletions(-)
create mode 100644
Eric W. Biederman wrote:
When physical devices are inside of network namespace and that
network namespace terminates we can not make them go away. We
have to keep them and moving them to the initial network namespace
is the best we can do.
For virtual devices left in a network namespace
Daniel Lezcano [EMAIL PROTECTED] writes:
I agree that will make the life easier for user space developer :)
I have a few questions about this new behaviour.
After discussing with Benjamin, this patch means an user can no longer manage
a
pool of virtual devices because they will be
Michael Rubin wrote:
On Fri, Sep 12, 2008 at 1:18 PM, Andrew Morton
[EMAIL PROTECTED] wrote:
One thing to think about please: Michael Rubin is hitting problems with
the existing /proc/sys/vm/dirty-ratio. Its present granularity of 1%
is just too coarse for really large machines, and as
Daniel Lezcano [EMAIL PROTECTED] writes:
Perhaps, I am misunderstanding your sentence :) But just in case, let me
clarify
my idea.
If you have a TCP connection with a send queue not empty (the kernel has
buffered the data the application has sent), when your process exits because
the
Eric W. Biederman wrote:
Daniel Lezcano [EMAIL PROTECTED] writes:
Perhaps, I am misunderstanding your sentence :) But just in case, let me
clarify
my idea.
If you have a TCP connection with a send queue not empty (the kernel has
buffered the data the application has sent), when your
Eric W. Biederman wrote:
Daniel Lezcano [EMAIL PROTECTED] writes:
I agree that will make the life easier for user space developer :)
I have a few questions about this new behaviour.
After discussing with Benjamin, this patch means an user can no longer
manage a
pool of virtual devices
Pavel Emelyanov [EMAIL PROTECTED] writes:
I remember that I promised to prepare the wait-extending patch. But I
haven't manage to find time for this, sorry :( In a month or two I will
finish one time-hungry task and hopefully be able to do it.
As far as this particular patch is concerned.
Eric W. Biederman wrote:
There is no good reason to not support userspace specifying the
network namespace during device creation and it seems a handy
thing to do.
We have to be a little extra careful in this case to ensure that
the network namespace exists through the point where we call
KOSAKI Motohiro wrote:
Currently the problem we are hitting is that we cannot specify pdflush
to have background limits less than 1% of memory. I am currently
finishing up a patch right now that adds a dirty_ratio_millis
interface. I hope to submit the patch to LKML by the end of the week.
The objective of the i/o controller is to improve i/o performance
predictability of different cgroups sharing the same block devices.
Respect to other priority/weight-based solutions the approach used by this
controller is to explicitly choke applications' requests that directly (or
indirectly)
Export the throttling statistics collected for each task through
/proc/PID/io-throttle-stat.
Example:
$ cat /proc/$$/io-throttle-stat
0 0 0 0
^ ^ ^ ^
\ \ \ \_global iops sleep (in clock ticks)
\ \ \__global iops counter
\ \___global bandwidth sleep (in clock ticks)
Introduce attributes and functions in res_counter to implement throttling-based
cgroup subsystems.
The following attributes have been added to struct res_counter:
* @policy: the limiting policy / algorithm
* @capacity: the maximum capacity of the resource
* @timestamp: timestamp of the
Daniel Lezcano wrote:
Eric W. Biederman wrote:
When physical devices are inside of network namespace and that
network namespace terminates we can not make them go away. We
have to keep them and moving them to the initial network namespace
is the best we can do.
For virtual devices left in
This is the core of the cgroup-io-throttle kernel infrastructure. It creates
the basic interfaces to cgroups and implements the I/O measurement and
throttling functionality.
Signed-off-by: Andrea Righi [EMAIL PROTECTED]
---
block/Makefile |2 +
block/blk-io-throttle.c
Implement get_cgroup_from_page() / put_cgroup_from_page() in the cgroup memory
controller to retrieve the owner of a page during writes in submit_bio()
processed asynchronously by kernel threads (i.e. pdflush).
Note: right now this is no more than a hack to keep the things simpler; in
perspective
Balbir Singh wrote:
Michael Rubin wrote:
On Fri, Sep 12, 2008 at 1:18 PM, Andrew Morton
[EMAIL PROTECTED] wrote:
One thing to think about please: Michael Rubin is hitting problems with
the existing /proc/sys/vm/dirty-ratio. Its present granularity of 1%
is just too coarse for really large
Hello,
So I wonder: the sysfs tagged directory support patch is in GerKH
tree for more than a month.
I cloned today latest Linus tree (2.6.27-rc9) and
it is not there as far as I can see.
It is also not in linux-next tree (from september).
Now, I wonder what is the process of merging this
GregKH
On Tue, Oct 07, 2008 at 06:39:04PM +0200, Mark Ryden wrote:
Hello,
So I wonder: the sysfs tagged directory support patch is in GerKH
tree for more than a month.
I dropped it from my tree 2 days ago, see the thread on lkml for why.
thanks,
greg k-h
Mark Ryden wrote:
Hello,
So I wonder: the sysfs tagged directory support patch is in GerKH
tree for more than a month.
I cloned today latest Linus tree (2.6.27-rc9) and
it is not there as far as I can see.
It is also not in linux-next tree (from september).
Now, I wonder what is the
Quoting James Morris ([EMAIL PROTECTED]):
On Mon, 6 Oct 2008, Serge E. Hallyn wrote:
Quoting James Morris ([EMAIL PROTECTED]):
On Fri, 3 Oct 2008, Serge E. Hallyn wrote:
Hi James,
here are 3 patches to fix up the user namespaces a bit in preparation
for real userns
Greg KH [EMAIL PROTECTED] writes:
On Tue, Oct 07, 2008 at 06:39:04PM +0200, Mark Ryden wrote:
Hello,
So I wonder: the sysfs tagged directory support patch is in GerKH
tree for more than a month.
I dropped it from my tree 2 days ago, see the thread on lkml for why.
Greg why did you drop
On Tue, 7 Oct 2008, Serge E. Hallyn wrote:
the fixups could be carried in linux-next, or generate them against
creds-next-subsys for inclusion after that.
creds-next-subsys is not yet feeding into linux-next, right?
Correct.
So I should wait until they hit linux-next?
Unless akpm
On Tue, Oct 07, 2008 at 01:31:52PM -0700, Eric W. Biederman wrote:
Greg KH [EMAIL PROTECTED] writes:
On Tue, Oct 07, 2008 at 06:39:04PM +0200, Mark Ryden wrote:
Hello,
So I wonder: the sysfs tagged directory support patch is in GerKH
tree for more than a month.
I dropped it from
From: Denis V. Lunev [EMAIL PROTECTED]
Date: Thu, 02 Oct 2008 14:13:14 +0400
This patch series provides a basic infrastructure to make snmp6
statistics per/namespace and actually virtualize udp6/udplite6 mibs.
This set follows approach used by Pavel Emelyanov in IPv4 code.
IP6/icmp6
From: Daniel Lezcano [EMAIL PROTECTED]
Date: Tue, 07 Oct 2008 14:07:00 +0200
Eric W. Biederman wrote:
Well there is the cheap trick with this patch of waiting until the local end
of veth dies.
I actually use veth, macvlan, empty netns and physical. But if you
are planning the send netns
Daniel Lezcano [EMAIL PROTECTED] writes:
Eric W. Biederman wrote:
There is no good reason to not support userspace specifying the
network namespace during device creation and it seems a handy
thing to do.
We have to be a little extra careful in this case to ensure that
the network
On Tue, 07 Oct 2008 17:49:49 +0200
Andrea Righi [EMAIL PROTECTED] wrote:
Balbir Singh wrote:
Michael Rubin wrote:
On Fri, Sep 12, 2008 at 1:18 PM, Andrew Morton
[EMAIL PROTECTED] wrote:
One thing to think about please: Michael Rubin is hitting problems with
the existing
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