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Bug#645869: linux-2.6: keep kernel.sched_autogroup_enabled setting default (to 1)



On Wed, 2011-10-19 at 10:10 +0200, Yves-Alexis Perez wrote:
> Package: linux-2.6
> Version: 3.0.0-6

Not yet released, so you can't tell whether this will be changed!

> Severity: wishlist
> 
> Hey,
> 
> since few versions, linux-2.6 uses an “autogroup" scheduling setting, which
> is supposed to improve the responsiveness, especially for desktop session.
> 
> Upstream enables it by default, and there's a sysctl
> (kernel.sched_autogroup_enabled) to disable it in case it causes issues.
> 
> Debian ships a patch (debian/patches/debian/sched-autogroup-disabled.patch)
> which changes the default to disabled.
> 
> I'm not too sure what is the rationale for changing the default, but I think
> it'd be nice to revert that and keep upstream default, unless there are good
> reasons to divert from them.

The upstream default is that it is disabled at compile-time, since
SCHED_AUTOGROUP is not 'default y' or selected by any other option.

Our default matches this but adds the option to enable it at run-time.

Ben.

-- 
Ben Hutchings
73.46% of all statistics are made up.

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