From owner-freebsd-hackers@FreeBSD.ORG  Sat Mar 28 17:43:08 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 9788542B
 for <freebsd-hackers@freebsd.org>; Sat, 28 Mar 2015 17:43:08 +0000 (UTC)
Received: from mail-ig0-x235.google.com (mail-ig0-x235.google.com
 [IPv6:2607:f8b0:4001:c05::235])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id 5B485F27
 for <freebsd-hackers@freebsd.org>; Sat, 28 Mar 2015 17:43:08 +0000 (UTC)
Received: by igbud6 with SMTP id ud6so44720286igb.1
 for <freebsd-hackers@freebsd.org>; Sat, 28 Mar 2015 10:43:07 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113;
 h=mime-version:sender:in-reply-to:references:date:message-id:subject
 :from:to:cc:content-type;
 bh=G3PSJH1uhyR8qWe5i8Q1j6DsrgDzG68/04WOQvx7S2Q=;
 b=0khJ1TPfJoVlDwtikfqArEoUMGrm6mx0ausdvUZ1HDDSYujSGEqr71WHyUBwjkMpSl
 j3EKooIzt+Migd2Rsn7VVDCYTV3TkEzqQhqU3Y4/tp2K22ZNdGTkoAC1opB7UC4G+yTC
 VG0+MO85PgVq4uT9CKGlusqRy13v8zXWrQmKEsbDT1f0WehekJcLRbDBMm1navVi3otD
 Tk1/T9ll11xUG17B6gBBCZhdHAa5daRsqsYNChKUgSExzL/amOHccvcKlsdFG+EsCFzc
 9OqEt3UGW5Q1NvQSvukX14AkCQjOOsGzJ7DnqnwQQo2VRxnjWMhxc9Ja5jL/BcGfQ9K8
 YXTA==
MIME-Version: 1.0
X-Received: by 10.107.155.13 with SMTP id d13mr37069376ioe.29.1427564587791;
 Sat, 28 Mar 2015 10:43:07 -0700 (PDT)
Sender: adrian.chadd@gmail.com
Received: by 10.36.17.194 with HTTP; Sat, 28 Mar 2015 10:43:07 -0700 (PDT)
In-Reply-To: <20150328154031.GA23643@zxy.spb.ru>
References: <20150328112035.GZ23643@zxy.spb.ru>
 <CAJ-Vmo=sxtLgn1HABbWchu1Hm8kZ4Qy+scPeD7ezkkBzr+QijA@mail.gmail.com>
 <20150328154031.GA23643@zxy.spb.ru>
Date: Sat, 28 Mar 2015 10:43:07 -0700
X-Google-Sender-Auth: -iHmPfe5GFn6vKZ0in9l6PJMYpA
Message-ID: <CAJ-VmokpWNy-arZ_=4hNbyAvzBYgDWu4F=vYSDwqPgpjaGHk=w@mail.gmail.com>
Subject: Re: irq cpu binding
From: Adrian Chadd <adrian@freebsd.org>
To: Slawa Olhovchenkov <slw@zxy.spb.ru>
Content-Type: text/plain; charset=UTF-8
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 17:43:08 -0000

On 28 March 2015 at 08:40, Slawa Olhovchenkov <slw@zxy.spb.ru> wrote:
> 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.

Well, when you see "irq handling on other cpu", what do you mean?

How are you using cpuset to move things around?



-a