Received: from SOUTH-STATION-ANNEX.MIT.EDU by po7.MIT.EDU (5.61/4.7) id AA25540; Sat, 30 Sep 95 08:50:33 EDT Received: from SUN-LAMP.PC.CS.CMU.EDU by MIT.EDU with SMTP id AA01140; Sat, 30 Sep 95 08:50:07 EDT Received: from pain.lcs.mit.edu (pain.lcs.mit.edu [128.52.46.239]) by sun-lamp.pc.cs.cmu.edu (8.6.11/8.6.10) with ESMTP id IAA08515; Sat, 30 Sep 1995 08:50:08 -0400 Received: (from daemon@localhost) by pain.lcs.mit.edu (8.6.9/8.6.9) id HAA06492; Sat, 30 Sep 1995 07:15:55 -0400 Received: from rye.city.ac.uk by pain.lcs.mit.edu (8.6.9/8.6.9) with SMTP id GAA06451; Sat, 30 Sep 1995 06:59:50 -0400 Received: from mnt-pleasant.city.ac.uk by rye.city.ac.uk with SMTP (PP) id <01753-0@rye.city.ac.uk>; Sat, 30 Sep 1995 11:59:42 +0100 Received: from euston (sh391@euston.city.ac.uk [138.40.41.1]) by mnt-pleasant.city.ac.uk (8.6.12/8.6.12) with SMTP id LAA15045; Sat, 30 Sep 1995 11:59:41 +0100 Date: Sat, 30 Sep 1995 11:59:40 +0100 (BST) From: David Brownlee X-Sender: sh391@euston To: Christos Zoulas Cc: netbsd-help@NetBSD.ORG, "(NetBSD/sparc Maillist)" Subject: Re: CPU loop problem In-Reply-To: Message-Id: Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-netbsd-help@NetBSD.ORG Precedence: list X-Loop: netbsd-help@NetBSD.ORG I'm still getting these problems on NetBSD/sparc -current (but not on NetBSD/sun3 or NetBSD/i386 -current...) David/abs D.K.Brownlee@city.ac.uk (MIME) +44 171 477 8186 {post,host}master (abs) Network Analyst, UCS, City University, Northampton Square, London EC1V 0HB. <<< Monochrome - Largest UK Internet BBS - telnet mono.org >>> >=- Microsoft: Abort and Retry Cancel -or- NetBSD: http://www.netbsd.org -=< On Fri, 29 Sep 1995, Christos Zoulas wrote: > In article sillen@ts.umu.se (Daniel Silen) writes: > >On Thu, 28 Sep 1995, George E. Navas wrote: > > > >>=20 > >> I'm currently running NETBSD 1.0 and it works great. However, at times > >> it appears that if a telnet connection is dropped and you are in the > >> middle of vi, the vi command goes into a loop consuming all of the CPU. > >> I was wondering if anybody else encountered a similar problem or has > >> any info on why this happens.=20 > >>=20 > >> Thanks in Advance > >>=20 > >Vi? That way a new one... > >We are running AIX on a couple of RS6000, and has the same problem mainly= > >=20 > >with elm and pine. > > > >I think the cause simply is that the program looses connection with the=20 > >terminal, but don't "understand it". > >It simply keep trying to get userdata from the tty that not is=20 > >responding, thus ending up in an endless loop. > > > >If there is a solution to the problem, I'm unaware of it. We simply=20 > >solved it by creating a crontab-job, that looks for pine / elm - > >processeses that uses more than 20% of the CPU. > > > >Hope someone else knows better :-) > > For most of these ailments it is the shell who is responsible for not > propagating SIGHUP to the foreground process group. I don't remember > what the 1.0 {c,}sh used to do, but I think all that is cured by now. > > christos >