From owner-freebsd-drivers@FreeBSD.ORG Thu May 23 13:58:04 2013 Return-Path: Delivered-To: freebsd-drivers@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 05480E43 for ; Thu, 23 May 2013 13:58:04 +0000 (UTC) (envelope-from oritm@mellanox.com) Received: from eu1sys200aog121.obsmtp.com (eu1sys200aog121.obsmtp.com [207.126.144.151]) by mx1.freebsd.org (Postfix) with ESMTP id 2DDF92A2 for ; Thu, 23 May 2013 13:58:02 +0000 (UTC) Received: from MTLCAS01.mtl.com ([193.47.165.155]) (using TLSv1) by eu1sys200aob121.postini.com ([207.126.147.11]) with SMTP ID DSNKUZ4gZO3vOw7MazP1xK8DxiIprEcBjO9c@postini.com; Thu, 23 May 2013 13:58:03 UTC Received: from MTLDAG01.mtl.com ([10.0.8.75]) by MTLCAS01.mtl.com ([10.0.8.71]) with mapi id 14.03.0123.003; Thu, 23 May 2013 16:47:15 +0300 From: Orit Moskovich To: "freebsd-drivers@freebsd.org" Subject: taskqueues Thread-Topic: taskqueues Thread-Index: Ac5XuKI6XhgBsdJeSxm0tXVuhEIwAQ== Date: Thu, 23 May 2013 13:47:14 +0000 Message-ID: <981733489AB3BD4DB24B48340F53E0A55B0D5206@MTLDAG01.mtl.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.0.13.1] MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.14 X-BeenThere: freebsd-drivers@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Writing device drivers for FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 May 2013 13:58:04 -0000 Hi, Can you please specify the difference between interrupt threads and regular= kernel threads in the context of the different default taskqueues? Meaning, I saw that the taskqueue taskqueue_thread is actually a kernel thr= ead running the function taskqueue_thread_loop, And the 3 other default taskqueues are working with ithreads. Which of the above preempts the other? What should I use if performance is = critical (something equivalent to Linux softirq...)? Thanks, Orit Moskovich