Xref: utzoo comp.sys.mac:16923 news.admin:2491 Path: utzoo!attcan!uunet!lll-winken!lll-lcc!pyramid!vsi1!lmb From: lmb@vsi1.UUCP (Larry Blair) Newsgroups: comp.sys.mac,news.admin Subject: Re: some (should-be) ground-rules for submissions to comp.binaries.* Keywords: To compress or not to compress? Message-ID: <644@vsi1.UUCP> Date: 9 Jun 88 16:39:54 GMT References: <2689@utastro.UUCP> <8604@dartvax.Dartmouth.EDU> <1381@uokmax.UUCP> <643@vsi1.UUCP> <8845@dartvax.Dartmouth.EDU> Reply-To: lmb@vsi1.UUCP (Larry Blair) Organization: VICOM Systems Inc., San Jose, CA Lines: 27 In article <8845@dartvax.Dartmouth.EDU> earleh@eleazar.dartmouth.edu (Earle R. Horton) writes: |In article <643@vsi1.UUCP> lmb@vsi1.UUCP (Larry Blair) writes: |>The vast majority of news is transported site to site compressed. |>Applying compression to postings will most likely result in an |>increase data transfered. | |Example, please: | | No StuffIt Used | Stuffit Used | | | Stage Size (bytes) | Stage Size | ----- ----------- | ----- ---- | | |Application 33756 | Application 33756 |Application.Hqx 45082 | Application.sit 24070 |Application.Hqx.Z 31395 | Application.sit.Hqx 32896 | | Application.sit.Hqx.Z 29683 I stand corrected. These results seem to contradict the notion that compression randomizes a file such that further compression is useless. I guess that the ASCII-tizing of the compressed data adds enough non- randomness to allow more compression. -- * * O Larry Blair * * O VICOM Systems Inc. sun!pyramid----\ * * O 2520 Junction Ave. uunet!ubvax----->!vsi1!lmb * * O San Jose, CA 95134 ucbvax!tolerant/ * * O +1-408-432-8660