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Newsgroups: comp.unix.bsd.netbsd.misc Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mira.net.au!inquo!in-news.erinet.com!bug.rahul.net!rahul.net!a2i!samba.rahul.net!rahul.net!a2i!news.PBI.net!gw2.att.com!oucsboss!spam.cs.ohiou.edu!undetermined From: bfriedma@cs.ohiou.edu (Boris A. Friedman) Subject: help needed: serial port overflows under NetBSD 1.1 X-Nntp-Posting-Host: spam.cs.ohiou.edu Message-ID: <BFRIEDMA.96Apr24211954@spam.cs.ohiou.edu> Lines: 33 Sender: postmaster@spam.cs.ohiou.edu X-Nntp-Posting-Date: Wed Apr 24 21:19:54 1996 Organization: Ohio University Mathematics Department Date: Thu, 25 Apr 1996 01:19:53 GMT Folks, I need some help from NetBSD experts. I am running NetBSD 1.1 on Gateway 2000 80486DX/33 (and I do enjoy running it too - great operating system!). Right now I am running some tests using compressed SLIP. I am using a port of "dip" software to NetBSD. In the dip script I set my serial port speed to 57600 which should well exceed the modem's 31200 bps. The problems start when I download something from a 10mbps network. NetBSD com driver starts reporting a lot of overflows. I am getting messages of the following flavor: "Apr 23 22:19:00 zhivago /netbsd: com1: 13 silo overflows, 0 ibuf overflows". The reason I'm worried is because I want to have some clean tests, and so I'd like to make sure that I'm losing stuff not because of a faulty operating system. It seems strange that the serial line overflows, given that our terminal server runs at only 38200. To this effect I have three questions: 1) Is there a way in NetBSD to probe the serial port and find its actual baud rate (I think my com port is smth. like NS8250). 2) Is it known that NetBSD doesn't handle serial connections very well? The thing is that I never had this problem when I ran Linux (I had a lot of others though:-), but I suspect that Linux might have just silently discarded stuff, while NetBSD is more honest. 3) A similar problem occurs with my network card. I have an 8-bit 3c503 card, and NetBSD reports that the buffer is being overrun during every large file transfer. Never had this with Linux. Any comments on that? Thanks very much. Boris.