Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!caip!princeton!allegra!ulysses!mhuxr!mhuxt!houxm!ihnp4!chinet!randy From: randy@chinet.UUCP (randy) Newsgroups: net.micro.att,net.bugs.usg Subject: Re: 3b2-310 lost characters Message-ID: <548@chinet.UUCP> Date: Sun, 14-Sep-86 09:47:44 EDT Article-I.D.: chinet.548 Posted: Sun Sep 14 09:47:44 1986 Date-Received: Mon, 15-Sep-86 20:12:40 EDT References: <193@osi3b2.UUCP> Reply-To: randy@chinet.UUCP (Randy Suess-) Organization: chi-net, Public Access UN*X, Chicago IL Lines: 35 Keywords: 3b2 Xref: mnetor net.micro.att:1461 net.bugs.usg:367 In article <193@osi3b2.UUCP> james@osi3b2.UUCP (James R. Van Artsdalen) writes: > >After the upgrade, we began having trouble with the serial lines. Every so >often the system would get into a mode wherein it would lose characters on >the serial ports. >On the basis of some rumors I've upped the NCLIST value to 200 from 80 and >James R. Van Artsdalen ...!decvax!dartvax!osi3b2!james Live Free or Die I have a 3b2/300 with 2 megs memory, and 3 ports cards. I have two 9600 baud terminals connected to console and contty. All the ports card have 2400 baud modems on them. What you describe happens about once a week with out fail. When it happens, it happens on all ports, console included. Only way to fix is to shutdown and restart. I have played with clists from 50 to 300 with no change. It did not happen until I upgraded to 2.0.4 Another strange thing with 2.0.4 is that a number of times a day, the i/o system just *stops*! Processing continues on and characters echo at the terminals, but nothing happens. From 30 seconds to 5 minutes it just sits, then bang, every thing continues on as if nothing happened. It seems to be disk i/o related. I can be sitting at the console when it happens, look over at the modem that a uucp is going on, and watch the flow go fine for about a half minute. Then it starts timing out, as if a buffer got filled and had to go to the disk. Generally, uucp times out before the system fires back up again. By various experiments, I have found a combination of things agravate the problem. If I set NBUFS to over 300 *AND* any program is set sticky bit, it runs rampant. I have had to un sticky /bin/sh, rnews, vi and all others, or the system is unusable. Is it my 300 only, or is this common? -- .. that's the biz, sweetheart... Randy Suess chinet - Public Access UN*X (312) 545 7535 (h) (312) 283 0559 (system) ..!ihnp4!chinet!randy