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Newsgroups: comp.unix.bsd.freebsd.misc Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!simtel!news.sprintlink.net!psgrain!agora!agora.rdrop.com!sundans From: sundans@agora.rdrop.com (Craig Keenan) Subject: 1.1.5.1 Serial Quirks/Phenomena??? Sender: news@agora.rdrop.com (David Greenman) Nntp-Posting-Host: agora.rdrop.com Organization: RainDrop Laboratories Message-ID: <DBvwHr.L5p@agora.rdrop.com> Date: Mon, 17 Jul 1995 23:41:49 GMT Lines: 27 I have a system set up to allow dial-in access using a STB 4-Com serial port sharing a single interrupt. The machines this is on is a AST 486/66 with a Conner 850MB IDE Drive. Anyway, the problem is... I have no problem using the 4 ports simultaneously with USR 28.8K blazing at a DTE of 115.2Kbps, although usually not all at once. (maybe 2 or 3 max) When I initally boot the machine up, and the modems are used, I get a shitpot of ISA strayint f's which Ifigure is flaky hardware, but I have nothing configured on IRQ 15. The system quits logging these after 5 or 6 ocurrences, so I can ignore them for the most part. The problem happens later.... I have observed maybe a silo overflow error about once a month, but not enough to really make a difference. What I am concerned about are the many 'interrupt-level overflows' I get.... sometimes about 200/day !!! From the sio manpage, I see these are problems with the bottom half of the sio dirver.... and I don't think I am losing any data At least my customers aren't saying anything :) So do you think the problem is with the STB 4-Com shitting out flaky interrupt signalss, confusing the sio driver??? Or could it be the AST 486/66 (Bravo LC, I think...) is flipping out? I have heard about using IDE drives with multiport serial causing the silo's (due to IDE bus-hoggin), but I really would like to clean up my syslog always saying I have interrupt-level overflow errors... Also, how ereliable is the serial in 2.0.5R??? I would like to upgrade to 2.0.5 (or maybe 2.1, time depending...) but I am so thoroughly astounded with 1.1.5.1's rock solid stability that I am a little afraid... Should I be?? Please someone give me some good technical answers when you get time. Thanks in Advance, CK