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From: lrr@princeton.UUCP
Newsgroups: net.unix-wizards
Subject: Re: Grand Pauses in 4.3 on 750s
Message-ID: <1600003@princeton.UUCP>
Date: Mon, 29-Sep-86 11:22:00 EDT
Article-I.D.: princeto.1600003
Posted: Mon Sep 29 11:22:00 1986
Date-Received: Wed, 1-Oct-86 01:12:38 EDT
References: <1600002@princeton.UUCP>
Organization: CS Department, Princeton University
Lines: 25
Nf-ID: #R:princeton:1600002:princeton:1600003:000:636
Nf-From: princeton!lrr    Sep 29 11:22:00 1986

The problem turned out to be a lack of buffers in the DEUNA.  By asserting
dedebug in the driver, we found that it was unable to put the incoming
information anywhere.  We changed the line

	#define	NRCV	7

to

	#define	NRCV	31

and all is well.  The problem did not show up on the 8600 because it
appears to be able to get the info from the DEUNA fast enough to never (?)
run out of buffer space.


Larry Rogers
Princeton University
Department of Computer Science
Engineering Quadrangle Building, Room C334
Princeton, NJ 08544

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