From owner-freebsd-current@FreeBSD.ORG Thu Sep 30 20:35:09 2004 Return-Path: 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 4EEC316A4CE for ; Thu, 30 Sep 2004 20:35:09 +0000 (GMT) Received: from hanoi.cronyx.ru (hanoi.cronyx.ru [144.206.181.53]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0C2BC43D2D for ; Thu, 30 Sep 2004 20:35:08 +0000 (GMT) (envelope-from rik@cronyx.ru) Received: (from root@localhost) by hanoi.cronyx.ru id i8UKW2Rj064673 for freebsd-current@freebsd.org.checked; (8.12.8/vak/2.1) Fri, 1 Oct 2004 00:32:02 +0400 (MSD) (envelope-from rik@cronyx.ru) Received: from cronyx.ru (hanoi.cronyx.ru [144.206.181.53]) by hanoi.cronyx.ru with ESMTP id i8UKVqsM064661; (8.12.8/vak/2.1) Fri, 1 Oct 2004 00:31:53 +0400 (MSD) (envelope-from rik@cronyx.ru) Message-ID: <415C6B64.20505@cronyx.ru> Date: Fri, 01 Oct 2004 00:24:04 +0400 From: Roman Kurakin User-Agent: Mozilla/5.0 (X11; U; Linux i686; ru-RU; rv:1.2.1) Gecko/20030426 X-Accept-Language: ru-ru, en MIME-Version: 1.0 To: Giorgos Keramidas References: <20040925165522.GB45767@gothmog.gr> In-Reply-To: <20040925165522.GB45767@gothmog.gr> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit cc: freebsd-current@freebsd.org Subject: Re: silo overflows X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 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: Thu, 30 Sep 2004 20:35:09 -0000 Giorgos Keramidas: >I've been seeing the following for a while now. Any hints about ways to >track down why this happens or how to fix it? > >Sep 25 19:18:36 gothmog kernel: sio1: 2 more silo overflows (total 357) >Sep 25 19:18:45 gothmog kernel: sio1: 2 more silo overflows (total 359) >Sep 25 19:18:46 gothmog kernel: sio1: 1 more silo overflow (total 360) >Sep 25 19:37:03 gothmog kernel: sio1: 3 more silo overflows (total 363) >Sep 25 19:37:14 gothmog kernel: sio1: 1 more silo overflow (total 364) > >This is with a relatively recent 6.0-CURRENT on a Celeron @ 1800MHz. > >$ uname -v >FreeBSD 6.0-CURRENT #0: Fri Sep 24 00:04:47 EEST 2004 \ >sysop@gothmog.gr:/usr/obj/usr/src/sys/GENERIC > This is not a bug. This is normal. This would be "fixed" after interrupt optimisation in sio and other drivers/parts of system. BUG section of sio(4) describes all reasons for that. But you also should understand that you can always produce a load on any system that would lead to problems like this one. I didn't try this on FreeBSD, but Linux system was loaded by myself so that it was unable to deliver interrupt to my driver within a ~0.5-1 secconds, if my memory doesn't fails me. I hadn't try to load it more, but I am sure it is possible and that I can reproduce this on any other system (except realtime one I believe ;-). Best regards, Roman Kurakin >_______________________________________________ >freebsd-current@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-current >To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" > > > >