From owner-freebsd-stable Mon Jan 10 12: 2: 3 2000 Delivered-To: freebsd-stable@freebsd.org Received: from awfulhak.org (dynamic-69.max4-du-ws.dialnetwork.pavilion.co.uk [212.74.9.197]) by hub.freebsd.org (Postfix) with ESMTP id 6400A1534A for ; Mon, 10 Jan 2000 12:01:33 -0800 (PST) (envelope-from brian@Awfulhak.org) Received: from hak.lan.Awfulhak.org (root@hak.lan.Awfulhak.org [172.16.0.12]) by awfulhak.org (8.9.3/8.9.3) with ESMTP id UAA26420; Mon, 10 Jan 2000 20:01:26 GMT (envelope-from brian@lan.awfulhak.org) Received: from hak.lan.Awfulhak.org (brian@localhost.lan.Awfulhak.org [127.0.0.1]) by hak.lan.Awfulhak.org (8.9.3/8.9.3) with ESMTP id IAA00425; Mon, 10 Jan 2000 08:02:51 GMT (envelope-from brian@hak.lan.Awfulhak.org) Message-Id: <200001100802.IAA00425@hak.lan.Awfulhak.org> X-Mailer: exmh version 2.1.0 09/18/1999 To: "Mr. K." Cc: stable@FreeBSD.ORG, brian@hak.lan.Awfulhak.org Subject: Re: process stuck in ttywri In-Reply-To: Message from "Mr. K." of "Sat, 08 Jan 2000 10:59:11 EST." Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 10 Jan 2000 08:02:51 +0000 From: Brian Somers Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > This is the second time I've seen this on two completely different > machines (different network, different configuration, different state) so > I'm wondering if anyone else has run into it. What happens is while I'm > doing a make, one of the processes will get stuck. If I look at top, I > will see that one of the processes is stuck in ttywri. I know I have very > little information so I don't expect any solutions, but I was only > wondering if maybe someone else has run into this also, or maybe it was > already fixed? Also, if anyone wants to tell me something specific I > should look for next time it happens... > > FreeBSD [censored].home.com 3.4-STABLE FreeBSD 3.4-STABLE #1: Sun > Dec 19 04:22:13 GMT 1999 > root@[censored].home.com:/usr/src/sys/compile/HOMER i386 I saw this twice in one day on my back-end box running -current from December 4. I was (strangely enough) running ppp, and conveniently, ``show physical'' shows the results of an ioctl(TIOCOUTQ). The tty had (from memory) about 1700 bytes in the output queue. I was still receiving data but the output queue was jammed and the tty (correctly) wasn't select()ing for write. Unfortunately, as this is a TA, I had no CTS light to check, but I assume CTS was not high and that the modem at the other end was having problems..... I actually wrote it off to a dodgy TA as I've never seen the problem since :-/ -- Brian Don't _EVER_ lose your sense of humour ! To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message