Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!rice!uw-beaver!uw-entropy!thebes!campbell
From: campbell@Thalatta.COM (Bill Campbell)
Newsgroups: comp.dcom.modems
Subject: Re: poor uucp performance - help! (LONG)
Message-ID: <3162@thebes.Thalatta.COM>
Date: 25 Feb 90 21:55:09 GMT
References: <125@cdss.UUCP> <1990Feb17.063412.18455@rancho.uucp> <959@codonics.COM>
Reply-To: campbell@Thalatta.COM (Bill Campbell)
Organization: Thalatta Corporation, Bellevue WA
Lines: 22

In article <959@codonics.COM> bret@codonics.COM (Bret Orsburn) writes:
In article <1990Feb17.063412.18455@rancho.uucp> rock@rancho.uucp (Rock Kent) writes:
	>
	>4.  Make sure that you have compression turned off.  You don't want to
	>    be compressing already compressed news batches.
	>
	
	OK, I'll bite: Why not?
	
	Surely, compression will be less effective the second time, but is there
	any good reason to disable it? Do you have any data to demonstrate that
	throughput is *decreased* by enabling compression for a compressed newsfeed?
	
compressing an already compressed file typically results in a file approximately
1/3 LARGER than the original!  All you have to do to prove this to yourself
is to take a fairly large file, compress it, rename the result to something
without the .Z suffix and compress it again and compare the sizes.
-- 
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