From owner-freebsd-questions@FreeBSD.ORG Sat Sep 25 20:23:41 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 78C3816A4CE for ; Sat, 25 Sep 2004 20:23:41 +0000 (GMT) Received: from web53906.mail.yahoo.com (web53906.mail.yahoo.com [206.190.36.216]) by mx1.FreeBSD.org (Postfix) with SMTP id 1218043D1D for ; Sat, 25 Sep 2004 20:23:41 +0000 (GMT) (envelope-from stheg_olloydson@yahoo.com) Message-ID: <20040925202340.47348.qmail@web53906.mail.yahoo.com> Received: from [68.18.10.70] by web53906.mail.yahoo.com via HTTP; Sat, 25 Sep 2004 13:23:40 PDT Date: Sat, 25 Sep 2004 13:23:40 -0700 (PDT) From: stheg olloydson To: questions@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii cc: tm4525@aol.com Subject: Re: Device polling performance X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 25 Sep 2004 20:23:41 -0000 it was said by tm4525@aol.com : >The EVIDENCE is to the contrary, since it seems that a 2.4Ghz system >will be saturated when bridging ~250Kpps with device-polling enabled, >based on polling stats and userland benchmarking, even though the >system claims to be 100% idle. Interestingly, its about the same with >interrupt enabled. > >The POINT is that since there is no way to measure the performance, >you've got a bunch of guys who think they've figured something out >touting device-polling without having a clue what the performance >advantages (or consequences) are, so it might as well be black magic, >or snake oil, since you are as blind as a bat in your assessments. Hello, Please post your "polling stats and userland benchmarking" results. I would be very interested seeing them as I was thinking of moving to NICs that would benefit from polling. However, because you have "EVIDENCE ... to the contrary", I may hold off. On the other hand, you do go on to say "there is no way to measure the performance" and "you are as blind as a bat in your assessments", so also please post your test methodology. I need to make my decision on reliable, repeatable facts. Also, when you post, would you please wrap your lines to a shorter length? Not everyone on the list uses AOL Reader, like you. Regards, Stheg __________________________________ Do you Yahoo!? New and Improved Yahoo! Mail - Send 10MB messages! http://promotions.yahoo.com/new_mail