From: Phil Auld <pauld@redhat.com>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Vincent Guittot <vincent.guittot@linaro.org>,
"Li, Aubrey" <aubrey.li@linux.intel.com>,
Mel Gorman <mgorman@suse.de>, Ingo Molnar <mingo@redhat.com>,
Peter Zijlstra <peterz@infradead.org>,
Juri Lelli <juri.lelli@redhat.com>,
Dietmar Eggemann <dietmar.eggemann@arm.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ben Segall <bsegall@google.com>,
Valentin Schneider <valentin.schneider@arm.com>,
linux-kernel <linux-kernel@vger.kernel.org>,
Qais Yousef <qais.yousef@arm.com>,
Jiang Biao <benbjiang@gmail.com>
Subject: Re: [RFC PATCH v2] sched/fair: select idle cpu from idle cpumask in sched domain
Date: Thu, 24 Sep 2020 13:45:06 -0400 [thread overview]
Message-ID: <20200924174506.GE29958@lorien.usersys.redhat.com> (raw)
In-Reply-To: <129fceda-cf89-de74-f3fd-026c3c089d62@linux.intel.com>
On Thu, Sep 24, 2020 at 10:43:12AM -0700 Tim Chen wrote:
>
>
> On 9/24/20 10:13 AM, Phil Auld wrote:
> > On Thu, Sep 24, 2020 at 09:37:33AM -0700 Tim Chen wrote:
> >>
> >>
> >> On 9/22/20 12:14 AM, Vincent Guittot wrote:
> >>
> >>>>
> >>>>>>
> >>>>>> And a quick test with hackbench on my octo cores arm64 gives for 12
> >>
> >> Vincent,
> >>
> >> Is it octo (=10) or octa (=8) cores on a single socket for your system?
> >
> > In what Romance language does octo mean 10? :)
> >
>
> Got confused by october, the tenth month. :)
It used to be the eigth month ;)
>
> Tim
>
> >
> >> The L2 is per core or there are multiple L2s shared among groups of cores?
> >>
> >> Wonder if placing the threads within a L2 or not within
> >> an L2 could cause differences seen with Aubrey's test.
> >>
> >> Tim
> >>
> >
>
--
next prev parent reply other threads:[~2020-09-24 17:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-16 4:31 [RFC PATCH v2] sched/fair: select idle cpu from idle cpumask in sched domain Aubrey Li
2020-09-16 11:00 ` Mel Gorman
2020-09-16 11:40 ` Valentin Schneider
2020-09-16 12:04 ` Vincent Guittot
2020-09-17 9:21 ` Li, Aubrey
2020-09-21 15:14 ` Vincent Guittot
2020-09-21 15:21 ` Vincent Guittot
[not found] ` <af0237e0-1451-9d11-2ee2-1468a8bb6180@linux.intel.com>
2020-09-22 7:14 ` Vincent Guittot
[not found] ` <8a86b085-b445-b1c2-9b46-6346d923abf0@linux.intel.com>
2020-09-23 8:50 ` Vincent Guittot
[not found] ` <eb1c4c84-e361-d5a7-d071-b0dd7310eab4@linux.intel.com>
2020-09-24 13:09 ` Vincent Guittot
2020-09-25 9:21 ` Li, Aubrey
2020-09-25 16:45 ` Vincent Guittot
2020-09-27 5:56 ` Li, Aubrey
2020-09-24 16:37 ` Tim Chen
2020-09-24 17:13 ` Phil Auld
2020-09-24 17:43 ` Tim Chen
2020-09-24 17:45 ` Phil Auld [this message]
2020-09-25 6:50 ` Vincent Guittot
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