lkml.org 
[lkml]   [2020]   [Feb]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 2/5] sched/numa: Replace runnable_load_avg by load_avg
On Tue, Feb 18, 2020 at 04:50:48PM +0000, Valentin Schneider wrote:
> On 18/02/2020 15:38, Mel Gorman wrote:
> >>
> >> Could we reuse group_type instead? The definitions are the same modulo
> >> s/group/node/.
> >>
> >
> > I kept the naming because there is the remote possibility that NUMA
> > balancing will deviate in some fashion. Right now, it's harmless.
> >
>
> Since it's just a subset ATM I'd go for the reuse and change that later if
> shown a split is required, but fair enough.
>

I would feel that I was churning code for the sake of it.

> > I didn't merge that part of the first version of my series. I was
> > waiting to see how the implementation for allowing a small degree of
> > imbalance looks like. If it's entirely confined in adjust_numa_balance
> ^^^^^^^^^^^^^^^^^^^
> Apologies if that's a newbie question, but I'm not familiar with that one.
> Would that be added in your reconciliation series? I've only had a brief
> look at it yet (it's next on the chopping block).
>

I should have wrote adjust_numa_imbalance but yes, it's part of the
reconciled series so that NUMA balancing and the load balancer use the
same helper.

> > Yikes, no I'd rather not do that. Basically all I did before was create
> > a common helper like __lb_has_capacity that only took basic types as
> > parameters. group_has_capacity and numa_has_capacity were simple wrappers
> > that read the correct fields from their respective stats structures.
> >
>
> That's more sensible indeed. It'd definitely be nice to actually reconcile
> the two balancers with these common helpers, though I guess it doesn't
> *have* to happen with this very patch.

Yep, it can happen at a later time.

As it stands, I think the reconciled series stands on its own even
though there are further improvements that could be built on top.

--
Mel Gorman
SUSE Labs

\
 
 \ /
  Last update: 2020-02-18 18:42    [W:0.072 / U:6.904 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site