Date: Mon, 23 Feb 1998 17:40:55 +0100 (MET) From: hm@hcs.de (Hellmuth Michaelis) To: Michael.Bielicki@linkdesign.com Cc: freebsd-isdn@FreeBSD.ORG Subject: Re: receive buffer overflows en masse Message-ID: <m0y70w3-0000gaC@hcswork.hcs.de> In-Reply-To: <199802231542.QAA04848@cyprus.vds.linkdesign.com> from "Michael.Bielicki@linkdesign.com" at "Feb 23, 98 04:42:45 pm"
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>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
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