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From: humtech@ucschu.ucsc.edu (Mark Frost)
Newsgroups: comp.protocols.appletalk
Subject: Re: Chooser/atis registration problem?
Message-ID: <8846@saturn.ucsc.edu>
Date: 23 Aug 89 16:57:24 GMT
Sender: usenet@saturn.ucsc.edu
Reply-To: humtech@ucschu.ucsc.edu (Mark Frost)
Organization: Humanities Division, UC Santa Cruz
Lines: 44



In article <4YwfMBm00UoB0CA1wF@andrew.cmu.edu> tjh+@ANDREW.CMU.EDU (Tom Holodnik) writes:
>
>	We've recently run some tests that indicated that the Chooser we're
>running nearly everywhere (version 3.4, System 6.0.2) has serious
>troubles handling more than 16 entries of any network entity. This
>includes LaserWriters and machines running Broadcast. 
>
>	Over repeated trials, we observed that if there were 21 LaserWriters
>queried, all 21 NBP replies could be seen bound for the receipient node.
>Using Peek, we saw all replies coming back from the printers on the
>receiving network. However, the node running Chooser didn't show all 21
>printers. We never saw more than 16 LaserWriters under Chooser.
>Furthermore, running Inter*Poll, we observed no more than 1% packet
>loss, so the underlying network was reliably carrying data, once the
>entity had been resolved with NBP. 
>
>	Has anyone else seen this behavior? While this is a little different
>than the behavior Mark Frost observed, I think that it might be the same
>problem. I wish I could be more help to Mark, but perhaps someone else
>from Apple could comment on the state of Chooser. 
>
>Regards,
>Tom Holodnik

I just did another test and here are the results...

According to CheckNet, there are 18 LaserWriter devices on our zone (11
CAP LaserWriter Spoolers, 7 LaserWriters). When I go into Chooser (we use
version 3.3.1 - this is what we get with System 6.0.3; I've never seen version
3.4) on my IICX I am never able to see more than 13 devices. Some of the 
devices never show up even if I wait for a while. The "missing" devices are
both spoolers and "real" laserwriters with no apparent relation.


Mark Frost
	Office of the the Computing Coordinator
	Humanities Division
	University of California at Santa Cruz
	(408) 429-4603
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