From owner-freebsd-questions Sun Apr 6 00:43:01 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id AAA02338 for questions-outgoing; Sun, 6 Apr 1997 00:43:01 -0800 (PST) Received: from thelab.hub.org (hal-ns1-07.netcom.ca [207.181.94.71]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id AAA02332 for ; Sun, 6 Apr 1997 00:42:54 -0800 (PST) Received: from thelab.hub.org (LOCALHOST [127.0.0.1]) by thelab.hub.org (8.8.5/8.8.2) with SMTP id FAA19808 for ; Sun, 6 Apr 1997 05:42:47 -0300 (ADT) Date: Sun, 6 Apr 1997 05:42:47 -0300 (ADT) From: The Hermit Hacker To: questions@freebsd.org Subject: internal modem lock ups w/ remote CVS Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-questions@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Hi... Just over a month ago, I upgraded my modem from an external 28.8 to an internal 33.6, hoping to get slightly better performance out of my 'Net connection. The problem is that now I'm getting semi-regular lockups while connected... The situation is that I use remote cvs to connect to my server in Toronto, Ontario (I'm on the East Coast of Canada) to update and commit changes to the PostgreSQL cvs repository. At first, if I tried to do a cvs update, the modem would lock up shortly afterwards, and I'd have to disconnect (kill -9 the ppp daemon) and then reconnect... Finally, recalling all the talk about tcp_extensions, I disabled those and tried again. Now, I can do a few 'cvs ' before the modem will once more lock up, so it seems like disabling the tcp_extensions at least *helps*, but with the 28.8 modem, I didn't require this...it just worked. I've tried just about everything I can think of, and was wondering if anyone else has any ideas on what may be wrong? My first thought was buffer overruns, as a result of trying to pump alot of data over relatively quickly...but then I'd think I'd be affected by stuff like cvsup, fetchmail and ftp's...but I'm not... So, now that I've put that all down and thought about it...anyone have an idea of why it only seems to affect cvs? I get no messages in /var/log/messages to indicate its a buffer overflow problem or anything like that... I'm running 3.0-current from March 30th... Thanks... Marc G. Fournier Systems Administrator @ hub.org primary: scrappy@hub.org secondary: scrappy@{freebsd|postgresql}.org