Re: [RFC PATCH v0.1 0/9] UMCG early preview/RFC patchset

[Peter Oskolkov]

On Thu, May 20, 2021 at 2:17 PM Jonathan Corbet <corbet@xxxxxxx> wrote:
>
> Peter Oskolkov <posk@xxxxxxxxxx> writes:
>
> > As indicated earlier in the FUTEX_SWAP patchset:
> >
> > https://lore.kernel.org/lkml/20200722234538.166697-1-posk@xxxxxxx/
> >
> > "Google Fibers" is a userspace scheduling framework
> > used widely and successfully at Google to improve in-process workload
> > isolation and response latencies. We are working on open-sourcing
> > this framework, and UMCG (User-Managed Concurrency Groups) kernel
> > patches are intended as the foundation of this.
>
> So I have to ask...is there *any* documentation out there on what this
> is and how people are supposed to use it?  Shockingly, typing "Google
> fibers" into Google leads to a less than fully joyful outcome...  This
> won't be easy for anybody to review if they have to start by
> reverse-engineering what it's supposed to do.

Hi Jonathan,

There is this Linux Plumbers video: https://www.youtube.com/watch?v=KXuZi9aeGTw
And the pdf: http://pdxplumbers.osuosl.org/2013/ocw//system/presentations/1653/original/LPC%20-%20User%20Threading.pdf

I did not reference them in the patchset because links to sites other
than kernel.org are strongly discouraged... I will definitely add a
documentation patch.

Feel free to reach out to me directly or through this LKML thread if
you have any questions.

Do you think a documentation patch would be useful at this point, as
opposed to a free-form email discussion?

Thanks,
Peter

>
> Thanks,
>
> jon