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| From | Keith Thompson <kst-u@mib.org> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: [sOT] compression 1 GB downto 100 MB |
| Date | 2016-06-20 12:16 -0700 |
| Organization | None to speak of |
| Message-ID | <ln7fdjsmax.fsf@kst-u.example.com> (permalink) |
| References | (2 earlier) <2c8b0f6c-a079-4f75-9b59-53d03c6024a1@googlegroups.com> <nk2nol$l5s$2@gioia.aioe.org> <6f9b9b25-8347-4cbc-a23a-9e6c273bf6d2@googlegroups.com> <nk3503$7v0$1@dont-email.me> <aaedncHfg4AHFPrKnZ2dnUU7-SHNnZ2d@posted.internetamerica> |
gordonb.vnsk1@burditt.org (Gordon Burditt) writes:
[...]
> You might succeed. I recall trying this with "gzip", and some
> blocks of random data compressed, with 0.1% compression or so, and
> some got larger, with -0.1% compression. You probably get on average
> 0.0% compression, but it will vary a bit with the random data and
> the compression algorithm. That's what I got just now, taking a
> 52 meg file from /dev/random and trying to compress it with gzip.
> -0.1% compression, according to gzip (which rounds to a tenth of a
> percent), and -0.03055% compression by manual calculation (the file
> only got 16k bigger for a 52 meg file).
[...]
You got 52 meg from /dev/random? On my system just now, I got less than
200 bytes before it stalled. Are you sure you didn't use /dev/urandom?
(Permission to quote my words in a followup is granted only if a proper
attribution line is included.)
--
Keith Thompson (The_Other_Keith) kst-u@mib.org <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something. This is something. Therefore, we must do this."
-- Antony Jay and Jonathan Lynn, "Yes Minister"
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[sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 07:25 -0700
Re: [sOT] compression 1 GB downto 100 MB mark.bluemel@gmail.com - 2016-06-16 08:08 -0700
Re: [sOT] compression 1 GB downto 100 MB Lynn McGuire <lmc@winsim.com> - 2016-06-17 12:04 -0500
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-17 10:16 -0700
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 23:08 -0700
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-16 08:09 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:15 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:18 -0700
Re: [sOT] compression 1 GB downto 100 MB mark.bluemel@gmail.com - 2016-06-17 01:28 -0700
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-17 02:03 -0700
Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-17 10:34 +0100
Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-17 10:44 +0100
Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-17 11:03 +0100
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-17 03:51 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 02:16 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 02:29 -0700
Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-17 08:19 -0500
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 03:17 -0700
Re: [sOT] compression 1 GB downto 100 MB Gareth Owen <gwowen@gmail.com> - 2016-06-17 18:32 +0100
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-16 08:43 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:48 -0700
Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-16 10:49 -0500
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 09:10 -0700
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-16 09:36 -0700
Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-16 11:18 -0700
Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-16 13:13 -0500
Re: [sOT] compression 1 GB downto 100 MB Gareth Owen <gwowen@gmail.com> - 2016-06-16 20:18 +0100
Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-16 22:07 +0100
Re: [sOT] compression 1 GB downto 100 MB Gareth Owen <gwowen@gmail.com> - 2016-06-17 06:04 +0100
Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-16 23:21 -0500
Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-17 07:49 -0500
Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-17 12:47 -0500
Re: [sOT] compression 1 GB downto 100 MB "Osmium" <r124c4u102@comcast.net> - 2016-06-17 14:47 -0500
Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-17 23:32 -0500
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 01:33 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-17 14:51 -0700
Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-16 16:50 +0100
Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-17 16:20 +0100
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-16 08:34 -0700
Re: [sOT] compression 1 GB downto 100 MB Les Cargill <lcargill99@comcast.com> - 2016-06-16 12:55 -0500
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-16 11:53 -0700
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-16 12:14 -0700
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 12:33 -0700
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 12:46 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-17 15:04 -0700
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-17 22:55 -0700
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 01:38 -0700
Re: [sOT] compression 1 GB downto 100 MB BartC <bc@freeuk.com> - 2016-06-18 10:41 +0100
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-18 02:55 -0700
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-18 05:08 -0700
Re: [sOT] compression 1 GB downto 100 MB "Bill Cunningham" <nospam@nspam.invalid> - 2016-06-18 15:11 -0400
Re: [sOT] compression 1 GB downto 100 MB "Bill Cunningham" <nospam@nspam.invalid> - 2016-06-18 15:13 -0400
Re: [sOT] compression 1 GB downto 100 MB luser droog <luser.droog@gmail.com> - 2016-06-18 12:43 -0700
Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-18 20:43 +0100
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-18 12:53 -0700
Re: [sOT] compression 1 GB downto 100 MB "Chris M. Thomasson" <nospam@nospam.invalid> - 2016-06-20 20:32 -0700
Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-18 13:22 -0700
Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 16:35 -0400
Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 21:37 -0400
Re: [sOT] compression 1 GB downto 100 MB "James R. Kuyper" <jameskuyper@verizon.net> - 2016-06-18 16:59 -0400
Re: [sOT] compression 1 GB downto 100 MB crisdunbar@gmail.com - 2016-06-20 09:55 -0700
Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-20 21:22 +0100
Re: [sOT] compression 1 GB downto 100 MB cris <crisdunbar@gmail.com> - 2016-06-20 17:13 -0700
Re: [sOT] compression 1 GB downto 100 MB Tim Rentsch <txr@alumni.caltech.edu> - 2016-06-21 10:42 -0700
Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-21 20:09 +0100
Re: [sOT] compression 1 GB downto 100 MB crisdunbar@gmail.com - 2016-06-21 13:39 -0700
Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-22 08:34 -0700
Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-22 19:48 +0100
Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-19 01:37 +0100
Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-19 02:22 +0100
Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 21:30 -0400
Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-19 02:41 +0100
Re: [sOT] compression 1 GB downto 100 MB Jerry Stuckle <jstucklex@attglobal.net> - 2016-06-18 21:55 -0400
Re: [sOT] compression 1 GB downto 100 MB Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-06-19 03:20 +0100
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-19 02:53 -0700
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-18 16:05 -0700
Re: [sOT] compression 1 GB downto 100 MB "J. Clarke" <j.clarke.873638@gmail.com> - 2016-06-19 06:59 -0400
Re: [sOT] compression 1 GB downto 100 MB fir <profesor.fir@gmail.com> - 2016-06-19 05:55 -0700
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-19 06:13 -0700
Re: [sOT] compression 1 GB downto 100 MB "J. Clarke" <j.clarke.873638@gmail.com> - 2016-06-26 12:26 -0400
Re: [sOT] compression 1 GB downto 100 MB Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-06-26 09:53 -0700
Re: [sOT] compression 1 GB downto 100 MB Richard Heathfield <rjh@cpax.org.uk> - 2016-06-18 20:41 +0100
Re: [sOT] compression 1 GB downto 100 MB "J. Clarke" <j.clarke.873638@gmail.com> - 2016-06-19 06:45 -0400
Re: [sOT] compression 1 GB downto 100 MB Robert Wessel <robertwessel2@yahoo.com> - 2016-06-18 14:42 -0500
Re: [sOT] compression 1 GB downto 100 MB gordonb.vnsk1@burditt.org (Gordon Burditt) - 2016-06-20 01:13 -0500
Re: [sOT] compression 1 GB downto 100 MB Keith Thompson <kst-u@mib.org> - 2016-06-20 12:16 -0700
Re: [sOT] compression 1 GB downto 100 MB David Brown <david.brown@hesbynett.no> - 2016-06-20 21:27 +0200
Re: [sOT] compression 1 GB downto 100 MB Xaltonon <xaltonon@gmail.com> - 2016-06-20 21:25 -0700
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