From owner-freebsd-hackers@FreeBSD.ORG Sat Mar 28 15:20:09 2015 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 7CF90BBE for ; Sat, 28 Mar 2015 15:20:09 +0000 (UTC) Received: from mail-ig0-x231.google.com (mail-ig0-x231.google.com [IPv6:2607:f8b0:4001:c05::231]) (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 43BF4F41 for ; Sat, 28 Mar 2015 15:20:09 +0000 (UTC) Received: by ignm3 with SMTP id m3so47918453ign.0 for ; Sat, 28 Mar 2015 08:20:08 -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=PElbFA60ZLX/ES8i/nERjPWv2+VzkyBiTXD/6omu5pM=; b=XQd8Uu0yg7lFuIjv+MS4Z5gC8duxx4SZyX+fhiQaPMZdLoa3K6BZcvqe2QNNDaw1sm Ifka2NBQ00Ier9xRrm5Ma+40g3ZlYLtsv69adytJJorWddkAwJ9SNOH3MqRRG6fGeZWl 0BHREtFrXYdHuBT9IMdcLPpISJqVVCUAFlD7mLfRqwRFNpolTNp03NXcaWk7tDy1b4wL WZkXHadtrdO+13UpAweRO2bIt9VDUs6Epvu0CRipOUUbrXNQtf07aG1qtatAkOTjcHdb YIuvX6ifQbEM3KhgornotnxzTlPHDNI+ca1w5w5yRPwdz6RnmRUwohC27JKPTPEVhRYC WAmQ== MIME-Version: 1.0 X-Received: by 10.42.41.200 with SMTP id q8mr46925469ice.61.1427556008684; Sat, 28 Mar 2015 08:20:08 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.36.17.194 with HTTP; Sat, 28 Mar 2015 08:20:08 -0700 (PDT) In-Reply-To: <20150328112035.GZ23643@zxy.spb.ru> References: <20150328112035.GZ23643@zxy.spb.ru> Date: Sat, 28 Mar 2015 08:20:08 -0700 X-Google-Sender-Auth: MTITpZjAZ0CkQ2FxHSqMM84g5yc Message-ID: Subject: Re: irq cpu binding From: Adrian Chadd To: Slawa Olhovchenkov Content-Type: text/plain; charset=UTF-8 Cc: "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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 28 Mar 2015 15:20:09 -0000 On 28 March 2015 at 04:20, Slawa Olhovchenkov 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. -adrian