From owner-freebsd-current@FreeBSD.ORG Sat Nov 26 05:03:28 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5B62516A41F for ; Sat, 26 Nov 2005 05:03:28 +0000 (GMT) (envelope-from julian@elischer.org) Received: from delight.idiom.com (outbound.idiom.com [216.240.47.196]) by mx1.FreeBSD.org (Postfix) with ESMTP id 07DD143D5A for ; Sat, 26 Nov 2005 05:03:26 +0000 (GMT) (envelope-from julian@elischer.org) Received: from idiom.com (idiom.com [216.240.32.1]) by delight.idiom.com (Postfix) with ESMTP id C0C682253F2 for ; Fri, 25 Nov 2005 21:03:26 -0800 (PST) Received: from [192.168.2.5] (home.elischer.org [216.240.48.38]) by idiom.com (8.12.11/8.12.11) with ESMTP id jAQ53QZp038899 for ; Fri, 25 Nov 2005 21:03:26 -0800 (PST) (envelope-from julian@elischer.org) Message-ID: <4387EC9E.5040709@elischer.org> Date: Fri, 25 Nov 2005 21:03:26 -0800 From: Julian Elischer User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.7.11) Gecko/20050727 X-Accept-Language: en-us, en MIME-Version: 1.0 To: freebsd-current@freebsd.org References: <002801c5f081$f01ff200$642a15ac@smiley> <4384F807.6050105@samsco.org> <14BE0E5B-F596-4CB2-8048-07FC275C089F@lassitu.de> <20051124071405.GA15743@pit.databus.com> In-Reply-To: <20051124071405.GA15743@pit.databus.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: em interrupt storm X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 26 Nov 2005 05:03:28 -0000 So I haven't been paying too much attention to this thread and now suddenly I find that I may have a variant of this problem. I have been tasked with adding a 4 port intel (em) based card into a Dell 2850 based system. It is based on the intel E7525 chipset and running 4.11. I have noticed that this system has irq's in use from 16 down (Maybe in -current it may use higher) but that some interrupt counts seem to move together, as if they are wired to gether. I also have the problem that the system seems to get completely wedged sometimes as it seems to get into the em driver interupt routine and never get out again, or if it does get out it gets called right back in again. Can someone who was following this tell me if this is the same problem? I can get into the kernel debugger and it usually shows the amr interrupt handler, having been interrupted by the em driver, (and that interrupted by the keyboard interrupt handler for the KDB entry.) It seems that no matter how hard it tries or how often it is called the em driver is unable to clear this interrupt. Am I reading this correctly in that it seems to be the same problem as was being discussed here?