Re: [RFC/RFT PATCH v3] sched: automated per tty task groups

[Stephen Clark]

On 11/16/2010 01:16 PM, Lennart Poettering wrote:
> On Tue, 16.11.10 09:11, Linus Torvalds (torvalds@xxxxxxxxxxxxxxxxxxxx) wrote:
>
>    
> > On Tue, Nov 16, 2010 at 9:03 AM, Lennart Poettering
> > <mzxreary@xxxxxxxxxxx>  wrote:
> >      
> > > Binding something like this to TTYs is just backwards.
> > >        
> > Numbers talk, bullshit walks.
> >
> > The numbers have been quoted. The clear interactive behavior has been seen.
> >      
> Here's my super-complex patch btw, to achieve exactly the same thing
> from userspace without involving any kernel or systemd patching and
> kernel-side logic. Simply edit your own ~/.bashrc and add this to the end:
>
>    if [ "$PS1" ] ; then
>            mkdir -m 0700 /sys/fs/cgroup/cpu/user/$$
>            echo $$>  /sys/fs/cgroup/cpu/user/$$/tasks
>    fi
>
> Then, as the superuser do this:
>
>    mount -t cgroup cgroup /sys/fs/cgroup/cpu -o cpu
>    mkdir -m 0777 /sys/fs/cgroup/cpu/user
>
> Done. Same effect. However: not crazy.
>
> I am not sure I myself will find the time to prep some 'numbers' for
> you. They'd be the same as with the kernel patch anyway. But I am sure
> somebody else will do it for you...
>
> Lennart
>
>    
So you have tested this and have a nice demo and numbers to back it up?

--

"They that give up essential liberty to obtain temporary safety,
deserve neither liberty nor safety."  (Ben Franklin)

"The course of history shows that as a government grows, liberty
decreases."  (Thomas Jefferson)



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