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Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!cornell!rochester!ritcv!cci632!ccicpg!arnold!dave
From: dave@arnold.UUCP (Dave Arnold)
Newsgroups: comp.dcom.modems,comp.mail.uucp
Subject: Re: UUCP g stats
Message-ID: <208@arnold.UUCP>
Date: 5 Oct 88 14:47:41 GMT
References: <183@arnold.UUCP> <1988Sep20.184054.2403@utzoo.uucp> <184@arnold.UUCP> <21254@watmath.waterloo.edu>
Organization: Home, Mission Viejo, Ca
Lines: 17

In article <21254@watmath.waterloo.edu>, (Eric Gisin) writes:
> I write:
> > I am seeing the same 400-600 cps on a direct 9600 baud link between
> > a uVax and something else.  Can somebody out there tell me where the
> > bottleneck on the VAX is?
> 
> The BSD tty device drivers passes input characters one-at-a-time
> to the line drivers through the line switch l_rint (receiver interrupt)
> function.

I forgot to mention, my results are on a VAX running *VMS*.
Don't forget, there are other OS's to run on a VAX besides UN*X.
We are working on a CICO for VMS.  Anybody know if VMS TTDRIVER
overhead is higher than UNIX?
-- 
Dave Arnold
dave@arnold.UUCP	{cci632|uunet}!ccicpg!arnold!dave