Request to enable CONFIG_FAIR_GROUP_SCHED

[Dhaval Giani]

Hi,

I notice in the 2.6.24 update pushed out to fedora 8, fair group
sched is not enabled. Can it please be enabled?

(and if the aim is to provide minimum impact to the user, you can
set it to CONFIG_FAIR_CGROUP_SCHED allowing those who want to use it to
use it.)

Thanks,
-- 
regards,
Dhaval

[Ingo Molnar]

* Dhaval Giani <dhaval(a)linux.vnet.ibm.com&gt; wrote:

>  Hi,
>  
>  I notice in the 2.6.24 update pushed out to fedora 8, fair group sched 
>  is not enabled. Can it please be enabled? 
how about first asking why it was disabled?

	Ingo

[Dhaval Giani]

On Sun, Mar 09, 2008 at 12:32:28PM +0100, Ingo Molnar wrote:
>  
>  * Dhaval Giani <dhaval(a)linux.vnet.ibm.com&gt; wrote:
>  
>  > Hi,
>  > 
>  > I notice in the 2.6.24 update pushed out to fedora 8, fair group sched 
>  > is not enabled. Can it please be enabled?
>  
>  how about first asking why it was disabled?
>   
Yes, you are right, I am sorry, I should have asked that question first.
So why was it disabled?

-- 
regards,
Dhaval

[Chuck Ebbert]

On 03/09/2008 01:01 PM, Dhaval Giani wrote:
>  On Sun, Mar 09, 2008 at 12:32:28PM +0100, Ingo Molnar wrote:
> > * Dhaval Giani <dhaval(a)linux.vnet.ibm.com&gt; wrote:
> >
> >> Hi,
> >>
> >> I notice in the 2.6.24 update pushed out to fedora 8, fair group sched 
> >> is not enabled. Can it please be enabled?
> > how about first asking why it was disabled?
> >
>  
>  Yes, you are right, I am sorry, I should have asked that question first.
>  So why was it disabled?
>   
There are many reports of that feature causing big slowdowns. It seemed
better to add major new features like that in a new release rather than
possibly cause problems for existing users of a stable release.

[Balbir Singh]

On Mon, Mar 10, 2008 at 11:38 PM, Chuck Ebbert <cebbert(a)redhat.com&gt; wrote:

>  On 03/09/2008 01:01 PM, Dhaval Giani wrote:
>  > On Sun, Mar 09, 2008 at 12:32:28PM +0100, Ingo Molnar wrote:
>  >> * Dhaval Giani <dhaval(a)linux.vnet.ibm.com&gt; wrote:
>  >>
>  >>> Hi,
>  >>>
>  >>> I notice in the 2.6.24 update pushed out to fedora 8, fair group sched
>  >>> is not enabled. Can it please be enabled?
>  >> how about first asking why it was disabled?
>  >>
>  >
>  > Yes, you are right, I am sorry, I should have asked that question first.
>  > So why was it disabled?
>  >
>
>  There are many reports of that feature causing big slowdowns. It seemed
>  better to add major new features like that in a new release rather than
>  possibly cause problems for existing users of a stable release.
>  
Hi,

Does anyone know of any easy way of looking at the changelog to see what
.config is enabled/disabled. Is the config put up on the web somewhere? I
tried looking at http://koji.fedoraproject.org/. I got to
http://koji.fedoraproject.org/koji/getfile?taskID=508380&name=srpm.log and
then realized I might have to download the RPM and see, since I could not
find anything in the changelog or srpm.log

Balbir

[Dave Jones]

On Mon, Mar 10, 2008 at 11:45:53PM +0530, Balbir Singh wrote:
 
>  Does anyone know of any easy way of looking at the changelog to see
> what
>  .config is enabled/disabled. Is the config put up on the web somewhere? I
>  tried looking at http://koji.fedoraproject.org/. I got to
>  http://koji.fedoraproject.org/koji/getfile?taskID=508380&name=srpm.log and
>  then realized I might have to download the RPM and see, since I could not
>  find anything in the changelog or srpm.log 
 
At the bottom of http://fedoraproject.org/wiki/Kernel are links to viewcvs
for the various releases.  The config-* files there will provide canonical answers
whether or not an option is enabled.

The wiki page also has cvs checkout instructions if you'd rather track them
without using a web browser.

	Dave

-- 
http://www.codemonkey.org.uk

[Balbir Singh]

Dave Jones wrote:
>  On Mon, Mar 10, 2008 at 11:45:53PM +0530, Balbir Singh wrote:
>  
>   > Does anyone know of any easy way of looking at the changelog to see what
>   > .config is enabled/disabled. Is the config put up on the web somewhere? I
>   > tried looking at http://koji.fedoraproject.org/. I got to
>   > http://koji.fedoraproject.org/koji/getfile?taskID=508380&name=srpm.log and
>   > then realized I might have to download the RPM and see, since I could not
>   > find anything in the changelog or srpm.log
>  
>  At the bottom of http://fedoraproject.org/wiki/Kernel are links to viewcvs
>  for the various releases.  The config-* files there will provide canonical answers
>  whether or not an option is enabled.
>  
>  The wiki page also has cvs checkout instructions if you'd rather track them
>  without using a web browser. 
Thanks, Dave,

Got to it quite easily in the end.

-- 
	Warm Regards,
	Balbir Singh
	Linux Technology Center
	IBM, ISTL

[Dhaval Giani]

On Mon, Mar 10, 2008 at 02:08:09PM -0400, Chuck Ebbert wrote:
>  On 03/09/2008 01:01 PM, Dhaval Giani wrote:
>  > On Sun, Mar 09, 2008 at 12:32:28PM +0100, Ingo Molnar wrote:
>  >> * Dhaval Giani <dhaval(a)linux.vnet.ibm.com&gt; wrote:
>  >>
>  >>> Hi,
>  >>>
>  >>> I notice in the 2.6.24 update pushed out to fedora 8, fair group sched 
>  >>> is not enabled. Can it please be enabled?
>  >> how about first asking why it was disabled?
>  >>
>  > 
>  > Yes, you are right, I am sorry, I should have asked that question first.
>  > So why was it disabled?
>  > 
>  
>  There are many reports of that feature causing big slowdowns. It seemed
>  better to add major new features like that in a new release rather than
>  possibly cause problems for existing users of a stable release. 
Hi Chuck,

thanks for the explanation. OK, I shall upgrade to rawhide as soon as
possible and see how it looks there.

Thanks,
-- 
regards,
Dhaval