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From: tes@whuts.UUCP (STERKEL)
Newsgroups: comp.sys.ibm.pc
Subject: Incompatibilities Re: pkarc v3.5 and arc v5.20
Message-ID: <2129@whuts.UUCP>
Date: Sun, 7-Jun-87 09:43:10 EDT
Article-I.D.: whuts.2129
Posted: Sun Jun  7 09:43:10 1987
Date-Received: Thu, 11-Jun-87 06:36:53 EDT
References: <4431@iuvax.UUCP>
Organization: AT&T Bell Laboratories
Lines: 20
Summary: Strongly recommend patching pkarc to SEA/ARC std squashing

In article <4431@iuvax.UUCP>, bobmon@iuvax.UUCP (Che' Flamingo) writes:
> [original had results showing about 40% compression, with the
pkarc running in about 1/6th of the time of arc.}

I posted a test of file compressions about 6 weeks ago that
similarly showed only 2-3% compression results spread and the
same 1/6th execution time advantage of pkarc. (my files were
about 1.2MB).  I am gratified that your results are so close.

HOWEVER, [soap box time], remember that pkarc in the Squashing mode
results in a compressed file that is INCOMPATIBLE with SEA's ARC
and every other ARC clone that I have access to.  I have posted to
comp.sources.misc two patch files that correct this problem with
no speed penalty, and less than 2% space penalty.  To beat the
drum again: use pkarc, but patch it to the standard mode.
-- 
  -----                    Terry Sterkel
-====----              AT&T Bell Laboratories
--------- {clyde|harvard|cbosgd|allegra|ulysses|ihnp4}!whuts!tes
  -----         [opinions are obviously only my own]