From owner-freebsd-hackers@FreeBSD.ORG  Sat Mar 28 15:40:36 2015
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org
 [IPv6:2001:1900:2254:206a::19:1])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 007CA5D5;
 Sat, 28 Mar 2015 15:40:35 +0000 (UTC)
Received: from zxy.spb.ru (zxy.spb.ru [195.70.199.98])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id AD867188;
 Sat, 28 Mar 2015 15:40:35 +0000 (UTC)
Received: from slw by zxy.spb.ru with local (Exim 4.84 (FreeBSD))
 (envelope-from <slw@zxy.spb.ru>)
 id 1Ybsqe-000Kmu-0Y; Sat, 28 Mar 2015 18:40:32 +0300
Date: Sat, 28 Mar 2015 18:40:31 +0300
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: irq cpu binding
Message-ID: <20150328154031.GA23643@zxy.spb.ru>
References: <20150328112035.GZ23643@zxy.spb.ru>
 <CAJ-Vmo=sxtLgn1HABbWchu1Hm8kZ4Qy+scPeD7ezkkBzr+QijA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <CAJ-Vmo=sxtLgn1HABbWchu1Hm8kZ4Qy+scPeD7ezkkBzr+QijA@mail.gmail.com>
User-Agent: Mutt/1.5.23 (2014-03-12)
X-SA-Exim-Connect-IP: <locally generated>
X-SA-Exim-Mail-From: slw@zxy.spb.ru
X-SA-Exim-Scanned: No (on zxy.spb.ru); SAEximRunCond expanded to false
Cc: "freebsd-hackers@freebsd.org" <freebsd-hackers@freebsd.org>
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.18-1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
 <freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://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: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
 <mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 28 Mar 2015 15:40:36 -0000

On Sat, Mar 28, 2015 at 08:20:08AM -0700, Adrian Chadd wrote:

> On 28 March 2015 at 04:20, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:
> > Can someone describe how on FreeBSD/amd64 do interrupt handling?
> > Can be interrupt handler (hardware interrupt) direct dispatch to
> > specific CPU core (and only to this core)?
> > Can be all work be only on this core (ithread, device driver interrupt
> > handler, finalise)?
> 
> Yes - you can use cpuset on the interrupt to get them bound that way.
> 
> John and I are trying to make that whole process more automated and
> NUMA friendly. I'm debugging some of his work at the moment.

cpuset don't work as expected -- I see irq handling on other cpu.