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Path: utzoo!linus!decvax!bellcore!allegra!ulysses!mhuxr!mhuxt!houxm!hou2d!afb3
From: afb3@hou2d.UUCP (A.BALDWIN)
Newsgroups: net.arch
Subject: Re: dumber terminal device drivers
Message-ID: <528@hou2d.UUCP>
Date: Fri, 5-Apr-85 09:18:07 EST
Article-I.D.: hou2d.528
Posted: Fri Apr  5 09:18:07 1985
Date-Received: Sun, 7-Apr-85 09:44:24 EST
References: <327@piggy.UUCP> <2536@nsc.UUCP>, <209@osiris.UUCP>
Organization: AT&T Bell Labs, Holmdel NJ
Lines: 17

[Line Eater Food]

In "raw" mode every character cause "activation" (wake up of your
process for UN*X types).  In general this means a single character
per I/O call.  Result is one system call per character (and the
overhead there to).  The real killer is the system call -- not the
interpretive processing that might be done (its done anyway, who
cares if its in the system or in a library).


Al Baldwin
AT&T-Bell Labs
...!ihnp4!hou2d!afb3


[These opinions are my own....Who else would want them!!!]