telnetd eating up the cpu

tom reingold tr at madeleine
Sat Jul 22 01:53:34 AEST 1989


When someone telnets into our Pyramid and sends a lot of data to
stdout, the cpu usage goes up to 100% for the telnetd running on his
line.  This does not happen if he logs in using rlogin.  Nor does it
happen using rlogin or telnet into a Sun, so this definitely looks like
a Pyramid bug.

My test is as simple as:

	while true
	do
		cat /etc/passwd
	done

This will peg the CPU meter and slow performance for ALL users.

Any ideas or news on this?

Tom Reingold                   |INTERNET:       tr at ctt.bellcore.com
Bell Communications Research   |UUCP:           bellcore!ctt!tr
444 Hoes La room 1H217         |PHONE:          (201) 699-7058 [work],
Piscataway, NJ 08854           |                (201) 287-2345 [home]



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