Xref: utzoo news.software.b:5119 news.admin:9997 Path: utzoo!utstat!news-server.csri.toronto.edu!cs.utexas.edu!usc!rutgers!mcdchg!chinet!les From: les@chinet.chi.il.us (Leslie Mikesell) Newsgroups: news.software.b,news.admin Subject: Re: Cnews batching & 16 bit compress Message-ID: <1990Jul11.150319.1932@chinet.chi.il.us> Date: 11 Jul 90 15:03:19 GMT References: <1990Jul09.170549.22946@nstar.uucp> <1990Jul10.153613.10971@zoo.toronto.edu> Organization: Chinet - Public Access UNIX Lines: 18 In article <1990Jul10.153613.10971@zoo.toronto.edu> henry@zoo.toronto.edu (Henry Spencer) writes: >>Then why does the news software default to 12 bit compression? >There were some numbers in the distant past that suggested a different >set of tradeoffs, and there is a problem with machines that can't handle >anything bigger than 12. >Changes may be made. My experience with compress (not based on any serious testing or code checking) is that 16 bit compress consumes much more memory than 12 bit and is thus more likely to throw a machine into swapping/VM threashing when several processing are using it at the same time, even though there may not appear to be much difference in CPU consumption. Les Mikesell les@chinet.chi.il.us