linux-kernel - Re: [PATCH RESEND] sched: prefer an idle cpu vs an idle sibling for BALANCE

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Message-ID: <556732C8.9010803@gmail.com>
Date:	Thu, 28 May 2015 09:22:48 -0600
From:	David Ahern <dsahern@...il.com>
To:	Peter Zijlstra <peterz@...radead.org>,
	Mike Galbraith <mgalbraith@...ell.com>
CC:	Ingo Molnar <mingo@...nel.org>, Josef Bacik <jbacik@...com>,
	riel@...hat.com, mingo@...hat.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RESEND] sched: prefer an idle cpu vs an idle sibling for
 BALANCE_WAKE

On 5/28/15 6:19 AM, Peter Zijlstra wrote:
>> On Thu, 2015-05-28 at 13:49 +0200, Ingo Molnar wrote:
>
>>> What's the biggest you've seen?
>
> Wikipedia here: http://en.wikipedia.org/wiki/Haswell_%28microarchitecture%29
>
> Tell us HSW-E[PX] have 18 cores 36 thread SKUs.
>
> But yes, what Mike says, its bound to only get bigger.

sparc M7: 8 threads per core, 32 cores per socket = 256 cpus per socket

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