From owner-freebsd-questions@FreeBSD.ORG Mon Nov 10 07:16:44 2014 Return-Path: <owner-freebsd-questions@FreeBSD.ORG> Delivered-To: freebsd-questions@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 7854065F for <freebsd-questions@freebsd.org>; Mon, 10 Nov 2014 07:16:44 +0000 (UTC) Received: from barracuda.ixsystems.com (mail.ixsystems.com [12.229.62.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "*.ixsystems.com", Issuer "Go Daddy Secure Certification Authority" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 5442C7D8 for <freebsd-questions@freebsd.org>; Mon, 10 Nov 2014 07:16:43 +0000 (UTC) X-ASG-Debug-ID: 1415603802-08ca0441c48c470001-jLrpzn Received: from mail.iXsystems.com ([10.2.55.1]) by barracuda.ixsystems.com with ESMTP id gFjyOjAWNsIY9w7J (version=TLSv1 cipher=DHE-RSA-CAMELLIA256-SHA bits=256 verify=NO); Sun, 09 Nov 2014 23:16:42 -0800 (PST) X-Barracuda-Envelope-From: jkh@mail.turbofuzz.com X-Barracuda-RBL-Trusted-Forwarder: 10.2.55.1 Received: from [10.8.0.30] (unknown [10.8.0.30]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by mail.iXsystems.com (Postfix) with ESMTPSA id 7BF6289FC0; Sun, 9 Nov 2014 23:16:41 -0800 (PST) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 8.1 \(1993\)) Subject: Re: How thread-friendly is kevent? From: Jordan Hubbard <jkh@mail.turbofuzz.com> X-ASG-Orig-Subj: Re: How thread-friendly is kevent? In-Reply-To: <20141110071353.GO24601@funkthat.com> Date: Sun, 9 Nov 2014 23:16:37 -0800 Content-Transfer-Encoding: quoted-printable Message-Id: <500974D4-581E-46CB-9DC8-A100AAD35F70@mail.turbofuzz.com> References: <CABXB=RQWxu-d30raZ+FcrnrGsr5gG2Za_=cx8-jCnLSgJDSF=Q@mail.gmail.com> <20141110071353.GO24601@funkthat.com> To: John-Mark Gurney <jmg@funkthat.com> X-Mailer: Apple Mail (2.1993) X-Barracuda-Connect: UNKNOWN[10.2.55.1] X-Barracuda-Start-Time: 1415603802 X-Barracuda-Encrypted: DHE-RSA-CAMELLIA256-SHA X-Barracuda-URL: https://10.2.0.41:443/cgi-mod/mark.cgi X-Virus-Scanned: by bsmtpd at ixsystems.com X-Barracuda-BRTS-Status: 1 X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using global scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.3.11423 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Cc: freebsd-hackers@freebsd.org, J David <j.david.lists@gmail.com>, "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org> X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions <freebsd-questions.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions/> List-Post: <mailto:freebsd-questions@freebsd.org> List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, <mailto:freebsd-questions-request@freebsd.org?subject=subscribe> X-List-Received-Date: Mon, 10 Nov 2014 07:16:44 -0000 > On Nov 9, 2014, at 11:13 PM, John-Mark Gurney <jmg@funkthat.com> = wrote: >=20 > The most common use of this is for socket IO (there isn't much else > except maybe vnodes) that you can wait on that you'd have such a = highly > multithreaded program... And if you do, it would make more sense to > use the recent RSS work that Adrian has been working on, and have one > kq per CPU w/ the proper cpu binding for that set of sockets... Or just use libdispatch, which feeds a pool of worker threads from a = single event-handling source that is kind to queues. :) - Jordan