From owner-freebsd-net@FreeBSD.ORG Tue Sep 25 03:49:25 2012 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 959CA106566B for ; Tue, 25 Sep 2012 03:49:25 +0000 (UTC) (envelope-from erichfreebsdlist@ovitrap.com) Received: from alogreentechnologies.com (alogreentechnologies.com [67.212.224.110]) by mx1.freebsd.org (Postfix) with ESMTP id 34BE78FC14 for ; Tue, 25 Sep 2012 03:49:25 +0000 (UTC) Received: from X220.ovitrap.com ([122.129.201.21]) (authenticated bits=0) by alogreentechnologies.com (8.13.1/8.13.1) with ESMTP id q8P3nGBJ017998; Mon, 24 Sep 2012 21:49:17 -0600 Date: Tue, 25 Sep 2012 10:49:15 +0700 From: Erich Dollansky To: "Rudy (bulk)" Message-ID: <20120925104915.6aa98b88@X220.ovitrap.com> In-Reply-To: <50611FAE.7060809@monkeybrains.net> References: <5060884C.3050709@monkeybrains.net> <50611FAE.7060809@monkeybrains.net> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.6; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: freebsd-net , Ryan Stone Subject: Re: ping: sendto: No buffer space available X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 25 Sep 2012 03:49:25 -0000 Hi, On Mon, 24 Sep 2012 20:06:22 -0700 "Rudy (bulk)" wrote: > Checking all the interfaces, there are a lot more drops/Ierrs on > em2... The igb devices (PCIe card) seem a lot better than the > Supermicro motherboard em devices. Is this an on-board vs mb thing, > or em vs igb thing? > I do not have any experience with this hardware. I only can speak for iwn, run and the em thing in my machine. I am travelling with this hardware most of the time I have bought it. I hardly notice drops on the em interface connection to locally connected machines. I see a drop range from 0 to 100% when iwn is connecting to the same AP while run ranges from 0 to 10% at the same moment of time. But when I connect via iwn to a different AP and stay within 10m the drop rate is 0 again. With other words, it can be a problem caused how the actual hardware pieces connect to each other. It could be in your case that the PCI card has simply a better layout. I do not believe that on-board hardware is generally bad. Can you change the hardware this machine is talking to? Erich