Re: [PATCH, v10 3/3] cgroups: introduce timer slack controller

Matthew Garrett
2011-10-17T16:49:47Z

On Mon, Oct 17, 2011 at 06:36:44PM +0200, Peter Zijlstra wrote:
> On Mon, 2011-10-17 at 16:31 +0100, Matthew Garrett wrote:
> > On Mon, Oct 17, 2011 at 05:21:10PM +0200, Peter Zijlstra wrote:
> >
> > > Well what other cases are there? Can we enumerate them and come up
> > > with similar solutions?
> >
> > Javascript has timers. We execute rather a lot of javascript from
> > sources we can't influence at all.
>
> Which brings me to yet another gripe I've got with firefox, _WHY_ does
> it run javascript for tabs I can't see? Simply freeze the interpreter.

Because people expect gmail to provide them with status updates even if
it's not the foreground tab.

> Then again, what does JavaScript do with these timers? I don't really
> see how javascript/random-native-binary are really different, something
> needs doing. What something?

I agree that the thing that needs doing probably involves web developers
and threats of implied violence, but I suspect that web developers are
being created faster than we can reeducate them.

--
Matthew Garrett | mjg59@srcf.ucam.org