Xref: utzoo comp.mail.uucp:4357 comp.sources.d:5444 Path: utzoo!attcan!uunet!mailrus!b-tech!zeeff From: zeeff@b-tech.ann-arbor.mi.us (Jon Zeeff) Newsgroups: comp.mail.uucp,comp.sources.d Subject: Re: WANTED: News compression information... Message-ID: <%LM%#7D@b-tech.uucp> Date: 2 Jun 90 22:26:20 GMT References: <1990May29.202056.26271@ox.com> <266660F2.1D12@tct.uucp> Organization: Branch Technology Lines: 19 >By default, C News uses 12-bit compression. Its authors, Geoff >Collyer and Henry Spencer, are compulsive measurers [:-)]. Their >measurements of the relative efficiency of 12- and 16-bit compression >on news batches indicated that it wasn't that much of a gain, Let's look at some actual figures for fairly large batches (250k after compress). Believe me, with C News you want to use large batches, especially if your link is reliable: 16 bit = 1.0 14 bit = 1.12 12 bit = 1.28 I consider a 28% difference quite significant. Also consider that even small address space sites can do 14 bit uncompress with the right software (and no efficiency loss). -- Jon Zeeff (NIC handle JZ) zeeff@b-tech.ann-arbor.mi.us