km@mathcs.emory.edu (Ken Mandelberg) (07/25/90)
I just brought up the beta cslip code for SunOS 4.0 on SunOS 4.1. on a
SS1. I changed nothing, it all slipped into the 4.1 kernel without
change.
When I test it doubled back on itself (null modem from ttya to ttyb),
all seems well until I try a telnet and cat a long file to he
terminal. The output pauses on many multiples of around 250 bytes,
sometimes for several seconds. An "rsh cat" of the same file runs at
the baudrate with no hesitation, as do ftp's.
I also have a SunOS 4.0.x system (as it happens a 386i) running the
same cslip code. When I connect it to the 4.1 system, the telnet
problem only shows in one direction. If the output is generated on 4.1
the pauses occur. If I telnet from 4.1 to 4.0 and do the cat on 4.0,
there are no pauses.
I don't have an easy way to run a 4.0 kernel on the SS1 right now, so I
can't be completely sure that its not a sparc specific problem rather
than an OS interaction.
Any ideas.
--
Ken Mandelberg | km@mathcs.emory.edu PREFERRED
Emory University | {rutgers,gatech}!emory!km UUCP
Dept of Math and CS | km@emory.bitnet NON-DOMAIN BITNET
Atlanta, GA 30322 | Phone: (404) 727-7963