linux-kernel - Re: [CRM114spam]: Re: Odd performance results

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Message-ID: <20160713072055.GD13006@gmail.com>
Date:	Wed, 13 Jul 2016 09:20:55 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Cc:	"Dr. David Alan Gilbert" <dave@...blig.org>,
	Peter Zijlstra <peterz@...radead.org>,
	"H. Peter Anvin" <hpa@...or.com>, tglx@...utronix.de,
	mingo@...e.hu, ak@...ux.intel.com, linux-kernel@...r.kernel.org
Subject: Re: [CRM114spam]: Re: Odd performance results

* Paul E. McKenney <paulmck@...ux.vnet.ibm.com> wrote:

> > i7-3520M CPU @ 2.90GHz   (Dual core with hyperthread, Thinkpad t530, fedora 24)
> 
> Glad that it is not just me!  ;-)

Got one too:

aldebaran:~> grep -i . /sys/devices/system/cpu/cpu*/topology/thread_siblings_list | sort -t u -k +3 -n
/sys/devices/system/cpu/cpu0/topology/thread_siblings_list:0-1
/sys/devices/system/cpu/cpu1/topology/thread_siblings_list:0-1
/sys/devices/system/cpu/cpu2/topology/thread_siblings_list:2-3
/sys/devices/system/cpu/cpu3/topology/thread_siblings_list:2-3
/sys/devices/system/cpu/cpu4/topology/thread_siblings_list:4-5
/sys/devices/system/cpu/cpu5/topology/thread_siblings_list:4-5
/sys/devices/system/cpu/cpu6/topology/thread_siblings_list:6-7
/sys/devices/system/cpu/cpu7/topology/thread_siblings_list:6-7
/sys/devices/system/cpu/cpu8/topology/thread_siblings_list:8-9
/sys/devices/system/cpu/cpu9/topology/thread_siblings_list:8-9
/sys/devices/system/cpu/cpu10/topology/thread_siblings_list:10-11
/sys/devices/system/cpu/cpu11/topology/thread_siblings_list:10-11
/sys/devices/system/cpu/cpu12/topology/thread_siblings_list:12-13
/sys/devices/system/cpu/cpu13/topology/thread_siblings_list:12-13
/sys/devices/system/cpu/cpu14/topology/thread_siblings_list:14-15
/sys/devices/system/cpu/cpu15/topology/thread_siblings_list:14-15

Thanks,

	Ingo