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Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.mira.net.au!news.vbc.net!samba.rahul.net!rahul.net!a2i!ultra.sonic.net!wiley.napanet.net!news.zocalo.net!decwrl!enews.sgi.com!news.mathworks.com!newsfeed.internetmci.com!news.io.com!news From: mparson@grumblesmurf.io.com (Michael Parson) Newsgroups: comp.unix.bsd.netbsd.misc,comp.sys.sun.hardware Subject: Re: pppd and fifo overrun? Date: 24 Jul 1996 09:41:39 -0500 Organization: Illuminati Online Lines: 26 Message-ID: <4t5cn3$4u7@grumblesmurf.io.com> References: <4t3js3$a60@elaine39.Stanford.EDU> NNTP-Posting-Host: grumblesmurf.io.com Xref: euryale.cc.adfa.oz.au comp.unix.bsd.netbsd.misc:4148 comp.sys.sun.hardware:37709 In article <4t3js3$a60@elaine39.Stanford.EDU>, John B. Mooney <image@leland.Stanford.EDU> wrote: >I just set up pppd on a sparc 1+ running netbsd 1.1 connected to a US >Robotics Courier modem. In my system log, I'm consistently getting >messages like > >Jul 23 14:07:41 imajica /netbsd: zs0a: fifo overrun >Jul 23 14:08:22 imajica last message repeated 59 times > >pppd is configured for 38400. It's difficult to make a good connection >and transfers larger than around 60k time out. > >Any suggestions? To the best of my knowledge, Sparc serial ports are limited to 9600 baud. I don't know this for a fact, but it is something that I have heard. If they are indeed limited in this respect, then you would have problems like what you mentioned above. The basic problem is that you need a 16550 UART to do serial work faster than 9600 bps. The fifo buffer on anything less than a 16550 is too small and will overrun. -- Michael Parson // Illuminati Online E-mail: mparson@io.com \X/ Fnord! DNRC