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- Path: mail2news.demon.co.uk!genesis.demon.co.uk
- From: Lawrence Kirby <fred@genesis.demon.co.uk>
- Newsgroups: comp.arch,comp.lang.c
- Subject: Re: Did Microsoft decree a byte order?
- Date: Thu, 04 Jan 96 15:51:41 GMT
- Organization: none
- Message-ID: <820770701snz@genesis.demon.co.uk>
- References: <4b56do$c3u@sundog.tiac.net> <4b9pih$378@newshost.quickturn.com> <JAN.96Jan4144902@cora.neuroinformatik.ruhr-uni-bochum.de>
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- In article <JAN.96Jan4144902@cora.neuroinformatik.ruhr-uni-bochum.de>
- jan@neuroinformatik.ruhr-uni-bochum.de "Jan Vorbrueggen" writes:
-
- >In article <jgkDKMn2x.2KA@netcom.com> Joe Keane <jgk@netcom.com> writes:
- >
- > What if GIF files didn't work between machines? Or what about tar files?
- > What if you compress a file and can't uncompress it on a different machine?
- > People would say that someone is an incompetent bozo, and they'd be right.
- >
- >Irrelevant. These formats are expressly designed for interchange,
-
- And since we're talking about data interchange they are relevant examples.
-
- >and they
- >carry a hefty performance penalty because of it.
-
- Please explain where this overhead is. GIF is a compression format designed
- to pack graphics images down to a more reasonable size. There is certainly
- overhead in that but what portability/interchange considerations have created
- a 'hefty penalty'? tar is a means of archiving many files into one. There
- is overhead in that but, again, what portability/interchange considerations
- have created significant overhead? There are issues concerning the file header
- format but overheads for this sort of conversion are vanishingly
- small. Note that tar is only a partial solution - it gets files from A
- to B but doesn't make the files themselves portable, that needs to be done at
- a different level. However this has nothing to do with any overheads of
- tar itself.
-
- >The X protocol is another
- >example. For almost all other cases, the equivalent of a core dump is just
- >fine.
-
- In my book if I want to get data from A to B a core dump (or 'the equivalent')
- is not very helpful.
-
- > Performance is a fine excuse but, take it from me, it's just an excuse.
- >
- >Nonsense. Ever tried reading a 50 MByte array iteratively with a working set
- >of 2 MB
-
- Do you mean extracting 2MB of data from the 50MB file? If so you've simply
- chosen a terrible interchange format for the data - there's simply no need
- for that degree of overhead.
-
- --
- -----------------------------------------
- Lawrence Kirby | fred@genesis.demon.co.uk
- Wilts, England | 70734.126@compuserve.com
- -----------------------------------------
-