From owner-freebsd-hackers Mon Dec 6 11:51:50 1999 Delivered-To: freebsd-hackers@freebsd.org Received: from mass.cdrom.com (mass.cdrom.com [204.216.28.184]) by hub.freebsd.org (Postfix) with ESMTP id 6F4F21535C for ; Mon, 6 Dec 1999 11:51:47 -0800 (PST) (envelope-from msmith@mass.cdrom.com) Received: from mass.cdrom.com (localhost [127.0.0.1]) by mass.cdrom.com (8.9.3/8.9.3) with ESMTP id LAA00484; Mon, 6 Dec 1999 11:53:43 -0800 (PST) (envelope-from msmith@mass.cdrom.com) Message-Id: <199912061953.LAA00484@mass.cdrom.com> X-Mailer: exmh version 2.1.1 10/15/1999 To: Warner Losh Cc: hackers@FreeBSD.ORG Subject: Re: tty level buffer overflows In-reply-to: Your message of "Fri, 03 Dec 1999 11:14:47 MST." <199912031814.LAA11849@harmony.village.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 06 Dec 1999 11:53:43 -0800 From: Mike Smith Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > In message <199912030155.RAA02824@mass.cdrom.com> Mike Smith writes: > : It's documented in the sio(4) manpage, which is always worth reading. > > Even reading the sio manpage is unclear. All it says is that things > are too slow. Steady state I don't get these, just every now and > again it happens. No apparent correlation to the time of day, cron > jobs running, etc. > > What I was wondering is if there is a way to, say, double the buffer > size. Also, what is the number of overflows mean? Is that bytes? > clists? 16byte chunks? The overflow seems to happen just once and it > is always a number less than 1000. I'd gladly spend an extra 1-2k of > memory to help my poor ppp machine over the humps. Growing the buffer isn't the solution; it should be big enough already. We need to work out why a system that should have no trouble with the data rate in question is croaking so trivially. -- \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message