Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!ll-xn!mit-eddie!jbs
From: jbs@eddie.MIT.EDU (Jeff Siegal)
Newsgroups: comp.unix.wizards
Subject: BSD 4.3 performance optimization and the DZ-11
Message-ID: <8369@eddie.MIT.EDU>
Date: 4 Mar 88 02:20:05 GMT
Reply-To: jbs@eddie.MIT.EDU (Jeff Siegal)
Organization: MIT, EE/CS Computer Facilities, Cambridge, MA
Lines: 10

Can someone explain the performance optimizations that are included in
the BSD 4.3 DZ-11 driver?  I know there is some sort of automatic
switching between interrupt-driven input and silo-read polling.  How
(and how well) does it work?  Are there any other optimizations?  Any
to deal with output, for example? 

For high-volume input, would one expect better performance (CPU
loading per character, not data rate) using a DZ-11, or a telnet
connection?  How about a straight TCP connection? 

Jeff Siegal