From owner-freebsd-hackers@freebsd.org  Fri Jan 19 20:21:11 2018
Return-Path: <owner-freebsd-hackers@freebsd.org>
Delivered-To: freebsd-hackers@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 35C90EC5B5B
 for <freebsd-hackers@mailman.ysv.freebsd.org>;
 Fri, 19 Jan 2018 20:21:11 +0000 (UTC) (envelope-from yuri@rawbw.com)
Received: from shell1.rawbw.com (shell1.rawbw.com [198.144.192.42])
 by mx1.freebsd.org (Postfix) with ESMTP id 2478672D1F
 for <freebsd-hackers@freebsd.org>; Fri, 19 Jan 2018 20:21:10 +0000 (UTC)
 (envelope-from yuri@rawbw.com)
Received: from yv.noip.me (c-24-6-186-56.hsd1.ca.comcast.net [24.6.186.56])
 (authenticated bits=0)
 by shell1.rawbw.com (8.15.1/8.15.1) with ESMTPSA id w0JKL9Q5055188
 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=NO);
 Fri, 19 Jan 2018 12:21:09 -0800 (PST) (envelope-from yuri@rawbw.com)
X-Authentication-Warning: shell1.rawbw.com: Host
 c-24-6-186-56.hsd1.ca.comcast.net [24.6.186.56] claimed to be yv.noip.me
Subject: Re: Does the kernel assign CPU affinity automatically?
To: Michael Zhilin <mizhka@gmail.com>
Cc: Freebsd hackers list <freebsd-hackers@freebsd.org>
References: <38c78eec-b598-dc44-8422-ab8fdec0a735@rawbw.com>
 <CAF19XB+Zk1v3nBzp6AxBfjbwHs4PXNd6THN=iASAr0p7+Vx0UQ@mail.gmail.com>
From: Yuri <yuri@rawbw.com>
Message-ID: <b0023394-3512-fe2c-2e2c-e8063cf9416c@rawbw.com>
Date: Fri, 19 Jan 2018 12:21:06 -0800
User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:52.0) Gecko/20100101
 Thunderbird/52.5.2
MIME-Version: 1.0
In-Reply-To: <CAF19XB+Zk1v3nBzp6AxBfjbwHs4PXNd6THN=iASAr0p7+Vx0UQ@mail.gmail.com>
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
Content-Language: en-US
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.25
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers/>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-hackers>, 
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 19 Jan 2018 20:21:11 -0000

On 01/19/18 11:36, Michael Zhilin wrote:
> May be just ULE?
> https://www.usenix.org/legacy/event/bsdcon03/tech/full_papers/roberson/roberson.pdf


What motivated my question is that I don't see the same on other processes.

For example, simple infinite cycle   for (;;) {} does switch CPUs.


Yuri