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From: b6ps@jupiter.sun.csd.unb.ca (Peter Howlett)
Subject: Re: NetBSD - routing and slip
Message-ID: <1994Jan12.142552.6187@jupiter.sun.csd.unb.ca>
Organization: University of New Brunswick, Fredericton, NB, Canada
X-Newsreader: TIN [version 1.1 PL9]
References: <2gv4lc$l0i@darkstar.UCSC.EDU>
Date: Wed, 12 Jan 1994 14:25:52 GMT
Lines: 27
Wailer at the Gates of Dawn (banshee@cats.ucsc.edu) wrote:
: >}3) Everyonce in a while, I get "/dev/com1: silo overflow" messages.
: >}They do not appear (in small chunks) to affect anything.
: >}But get yoo many of them at once, and ver soo all network
: >}(or maybe just all slip-related) tasks fail with "no buffer space available"
: Use a 16550 card or (even better) one of the hayes ESP boards. We run
: netbsd 0.9 with all std silo drivers at 57600 with 28.8 modems and get
: peaks of >40K with text files. 26K is common with binary files and other
: net traffic. The ESP board has in/out 1024k buffers and emulates a 16550
: (albeit with huge buffers).
Another solution not as good as the one above, but less expensive, is
to get a patch for the com driver from the minnie server at berkeley. It
was posted last year, so do a general search on 'silo overflow' and there
will be an article in the list (somewhere) with a patch to com.c.
I use a GVC 14.4k fax modem at home on NetBSD 0.9 with serial 57.6K
to my school on 16450 serial ports and have'nt had a single silo
overflow since. On a good day (if the SUN at school is not loaded)
I can get up to 3000 Chars/Sec on kermit transferring binary (gzip'd) files.
My machine by the way is a 386DX/25 w 8M Ram and X running constantly.
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From: Peter Howlett University of New Brunswick
Inet: b6ps@jupiter.csd.unb.ca Canada