linux-kernel - Re: [PATCH 0/3] memdelay: memory health metric for systems and workloads

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Date:   Sat, 29 Jul 2017 08:38:47 +0200
From:   Mike Galbraith <efault@....de>
To:     Johannes Weiner <hannes@...xchg.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Rik van Riel <riel@...hat.com>, Mel Gorman <mgorman@...e.de>
Cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        kernel-team@...com
Subject: Re: [PATCH 0/3] memdelay: memory health metric for systems and
 workloads

On Sat, 2017-07-29 at 04:48 +0200, Mike Galbraith wrote:
> ttwu asm delta says "measure me".

q/d measurement with pipe-test

+cgroup_disable=memory
2.241926 usecs/loop -- avg 2.242376 891.9 KHz  1.000
+patchset
2.284428 usecs/loop -- avg 2.357621 848.3 KHz   .951

-cgroup_disable=memory
2.257433 usecs/loop -- avg 2.327356 859.3 KHz  1.000
+patchset
2.394804 usecs/loop -- avg 2.404556 831.8 KHz   .967