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Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with mesh topology

From Rik van Riel <riel@redhat.com>
Newsgroups linux.kernel
Subject Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with mesh topology
Date 2017-04-14 01:40 +0200
Message-ID <tvWvf-1Fj-3@gated-at.bofh.it> (permalink)
References <tvNrX-3KR-5@gated-at.bofh.it> <tvNrX-3KR-3@gated-at.bofh.it> <tvPaq-4WE-23@gated-at.bofh.it> <tvTxn-86R-11@gated-at.bofh.it> <tvUa6-b9-5@gated-at.bofh.it>
Organization Red Hat, Inc

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On Thu, 2017-04-13 at 18:06 -0300, Lauro Venancio wrote:

> Just for clarification, I am sending the nodes distance table for the
> two most common typologies affected by this issue.

What do the sched groups look like for these topologies,
before and after your patch series?

> 4 nodes, ring topology
> node distances:
> node   0   1   2   3
>   0:  10  20  30  20
>   1:  20  10  20  30
>   2:  30  20  10  20
>   3:  20  30  20  10
> 
> 8 node, mesh topology
> node distances:
> node   0   1   2   3   4   5   6   7
>   0:  10  16  16  22  16  22  16  22
>   1:  16  10  16  22  22  16  22  16
>   2:  16  16  10  16  16  16  16  22
>   3:  22  22  16  10  16  16  22  16
>   4:  16  22  16  16  10  16  16  16
>   5:  22  16  16  16  16  10  22  22
>   6:  16  22  16  22  16  22  10  16
>   7:  22  16  22  16  16  22  16  10

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[RFC 2/3] sched/topology: fix sched groups on NUMA machines with mesh topology Lauro Ramos Venancio <lvenanci@redhat.com> - 2017-04-13 16:00 +0200
  Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines  with mesh topology Rik van Riel <riel@redhat.com> - 2017-04-13 17:20 +0200
  Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Peter Zijlstra <peterz@infradead.org> - 2017-04-13 17:50 +0200
    Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Lauro Venancio <lvenanci@redhat.com> - 2017-04-13 22:30 +0200
      Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Lauro Venancio <lvenanci@redhat.com> - 2017-04-13 23:10 +0200
        Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines  with mesh topology Rik van Riel <riel@redhat.com> - 2017-04-14 01:40 +0200
          Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Peter Zijlstra <peterz@infradead.org> - 2017-04-14 12:50 +0200
  Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Peter Zijlstra <peterz@infradead.org> - 2017-04-14 13:40 +0200
    Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Peter Zijlstra <peterz@infradead.org> - 2017-04-14 14:30 +0200
    Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Peter Zijlstra <peterz@infradead.org> - 2017-04-14 19:00 +0200
      Re: [RFC 2/3] sched/topology: fix sched groups on NUMA machines with  mesh topology Lauro Venancio <lvenanci@redhat.com> - 2017-04-17 16:50 +0200

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