From owner-freebsd-isdn Mon Feb 23 08:39:58 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id IAA28564 for freebsd-isdn-outgoing; Mon, 23 Feb 1998 08:39:58 -0800 (PST) (envelope-from owner-freebsd-isdn@FreeBSD.ORG) Received: from hcshh.hcs.de (hcshh.hcs.de [194.123.40.1]) by hub.freebsd.org (8.8.8/8.8.8) with SMTP id IAA28559 for ; Mon, 23 Feb 1998 08:39:54 -0800 (PST) (envelope-from hm@hcs.de) Received: from hcswork.hcs.de([192.76.124.5]) (2385 bytes) by hcshh.hcs.de via sendmail with P:smtp/R:inet_hosts/T:smtp (sender: ) id for ; Mon, 23 Feb 1998 17:39:42 +0100 (MET) (Smail-3.2.0.97 1997-Aug-19 #16 built 1997-Oct-22) Received: by hcswork.hcs.de (Smail3.1.29.0 #12) id m0y70w3-0000gaC; Mon, 23 Feb 98 17:40 MET Message-Id: From: hm@hcs.de (Hellmuth Michaelis) Subject: Re: receive buffer overflows en masse In-Reply-To: <199802231542.QAA04848@cyprus.vds.linkdesign.com> from "Michael.Bielicki@linkdesign.com" at "Feb 23, 98 04:42:45 pm" To: Michael.Bielicki@linkdesign.com Date: Mon, 23 Feb 1998 17:40:55 +0100 (MET) Cc: freebsd-isdn@FreeBSD.ORG Reply-To: hm@hcs.de Organization: HCS Hanseatischer Computerservice GmbH X-Mailer: ELM [version 2.4ME+ PL39 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-isdn@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org >From the keyboard of Michael.Bielicki@linkdesign.com: > Hi there, > is there a possibility in the code to enlarge the recieve buffer size ? It has nothing to do with buffer sizes. It is related to HSCX interrupts which are not served in time and (i suspect) the trailing HDLC flag of a frame containing IP data gets lost somehow causing the receive buffer holding one IP packet to overflow. > I am using i4b on CURRENT from exactly speaking friday morning 9 AM CET > :) and it runs perfect (never had such an easy setup done in the kernel > :)). Only thing are the never ending messages about receive buffer > overflows. These messages also are the symptoms for the mentioned interrupt handling problems. There seem to be times when the IRQ is blocked too long by spl's but i have not found out when and under what circumstances. The only thing i noticed is when i do disk i/o on the only machine which has IDE drives here i'm able to produce this problem easily. > BTW this machine servers 12 PC_s with 95/NT over one ISDN connection > using i4b and NAT 24h a day. It cut my phone costs compared with the > complicated BISDN by using the idle time stuff by about 40%. Good to hear :-) hellmuth -- Hellmuth Michaelis Tel +49 40 559747-70 HCS Hanseatischer Computerservice GmbH Fax +49 40 559747-77 Oldesloer Strasse 97-99 Mail hm@hcs.de 22457 Hamburg WWW http://www.hcs.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isdn" in the body of the message