Re: 4.4-final: 28 bioset threads on small notebook

From: Pavel Machek
Date: Sat Feb 20 2016 - 15:55:28 EST


Hi!

> > > You're directing this concern to the wrong person.
> > >
> > > I already told you DM is _not_ contributing any extra "bioset" threads
> > > (ever since commit dbba42d8a).
> >
> > Well, sorry about that. Note that l-k is on the cc list, so hopefully
> > the right person sees it too.
> >
> > Ok, let me check... it seems that
> > 54efd50bfd873e2dbf784e0b21a8027ba4299a3e is responsible, thus Kent
> > Overstreet <kent.overstreet@xxxxxxxxx> is to blame.
> >
> > Um, and you acked the patch, so you are partly responsible.
>
> You still haven't shown you even understand the patch so don't try to
> blame me for one aspect you don't like.

Well, I don't have to understand the patch to argue its wrong.

> > > But in general, these "bioset" threads are a side-effect of the
> > > late-bio-splitting support. So is your position on it: "I don't like
> > > that feature if it comes at the expense of adding resources I can _see_
> > > for something I (naively?) view as useless"?
> >
> > > Just seems... naive... but you could be trying to say something else
> > > entirely.
> >
> > > Anyway, if you don't like something: understand why it is there and then
> > > try to fix it to your liking (without compromising why it was there to
> > > begin with).
> >
> > Well, 28 kernel threads on a notebook is a bug, plain and simple. Do
> > you argue it is not?
>
> Just implies you have 28 request_queues right? You clearly have
> something else going on on your notebook than the average notebook
> user.

I'm not using the modules, but otherwise I'm not doing anything
special. How many request_queues should I expect? How many do you have
on your notebook?

Thanks,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html