Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.compression > #798

Re: I have a small toy program...

Show all headers | View raw

On 21.01.2012 04:05, jules Gilbert wrote:
> On Jan 20, 10:36 am, Jim Leonard<mobyga...@gmail.com>  wrote:
>> On Jan 19, 7:27 pm, jules Gilbert<jules.sto...@gmail.com>  wrote:
>>
>>> I use argtable, so I will probably plug in a rich set of options.
>>> Important, I want to be able to show BOTH the compression times and
>>> the decompression times.  And I will probably soon have to do files as
>>> segments, wherein I process a large block, say 10MB, completely, then
>>> continue for all remaining blocks.
>>
>> Why are you concerned about timing your code when you haven't verified
>> your decompression process works?  Shouldn't you be verifying that
>> first?
>
> Some basic numbers.

85.6% of all numbers are made up.

> A file below about 550 bytes won't compress.  I don't know the actual
> numeric lower limit, because a specific number doesn't exist, of
> course. The process performance depends on the exact content of
> course.  But I have files around that size that, when zlib tries, get
> larger.  But 600 byte files do indeed compress, just not a lot.
>
> A file of 16k will drop by about 7%, per pass.
>
> A file of 50k will drop by about 11.5% or so.
>
> And a file of about 60k will drop by about 12% or so.

And will it decompress again to its original form? No? Not tested, not 
yet implemented after 20 years of work? Oh, too bad.

Back to comp.compression | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-12 13:50 -0800
  Re: I have a small toy program... Earl_Colby_Pottinger <earlcolby.pottinger@sympatico.ca> - 2012-01-12 17:21 -0800
  Re: I have a small toy program... Jim Leonard <mobygamer@gmail.com> - 2012-01-13 08:22 -0800
    Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-15 10:30 -0800
    Re: I have a small toy program... Noob <root@127.0.0.1> - 2012-01-16 10:29 +0100
      Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-16 10:16 -0800
        Re: I have a small toy program... Jim Leonard <mobygamer@gmail.com> - 2012-01-16 11:08 -0800
        Re: I have a small toy program... Sebastian <s.gesemann@gmail.com> - 2012-01-16 15:34 -0800
        Re: I have a small toy program... stan <smoore@exis.net> - 2012-01-17 21:07 -0500
          Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-19 17:27 -0800
            Re: I have a small toy program... Jim Leonard <mobygamer@gmail.com> - 2012-01-20 07:36 -0800
              Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-20 19:05 -0800
                Re: I have a small toy program... Thomas Richter <thor@math.tu-berlin.de> - 2012-01-21 11:02 +0100
                Re: I have a small toy program... Sebastian <s.gesemann@gmail.com> - 2012-01-21 01:55 -0800
                Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-27 21:30 -0800
                Re: I have a small toy program... Sebastian <s.gesemann@gmail.com> - 2012-01-28 06:59 -0800
                Re: I have a small toy program... Jim Leonard <mobygamer@gmail.com> - 2012-01-23 11:09 -0800
                Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-23 19:18 -0800
                Re: I have a small toy program... pfraser <pete_fraser@comcast.net> - 2012-01-23 19:53 -0800
                Re: I have a small toy program... glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-01-24 11:33 +0000
                Re: I have a small toy program... Earl_Colby_Pottinger <earlcolby.pottinger@sympatico.ca> - 2012-01-24 06:30 -0800
                Re: I have a small toy program... glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-01-24 15:35 +0000
                Re: I have a small toy program... Earl_Colby_Pottinger <earlcolby.pottinger@sympatico.ca> - 2012-01-24 13:00 -0800
                Re: I have a small toy program... jacko <jackokring@gmail.com> - 2012-01-24 13:37 -0800
                Re: I have a small toy program... pfraser <pete_fraser@comcast.net> - 2012-01-24 07:55 -0800
                Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-28 11:03 -0800
                Re: I have a small toy program... Jim Leonard <mobygamer@gmail.com> - 2012-01-30 10:01 -0800
                Re: I have a small toy program... stan <smoore@exis.net> - 2012-01-30 18:59 -0500
                Re: I have a small toy program... Jim Leonard <mobygamer@gmail.com> - 2012-01-24 07:31 -0800
              Re: I have a small toy program... glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-01-21 14:34 +0000
                Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-27 21:22 -0800
                Re: I have a small toy program... pfraser <pete_fraser@comcast.net> - 2012-01-28 07:00 -0800
                Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-28 11:06 -0800
  Re: I have a small toy program... Thomas Richter <thor@math.tu-berlin.de> - 2012-01-13 20:03 +0100
    Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-14 17:13 -0800
      Re: I have a small toy program... Thomas Richter <thor@math.tu-berlin.de> - 2012-01-15 11:28 +0100
        Re: I have a small toy program... glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-01-15 11:53 +0000
          Re: I have a small toy program... Thomas Richter <thor@math.tu-berlin.de> - 2012-01-15 13:24 +0100
            Re: I have a small toy program... glen herrmannsfeldt <gah@ugcs.caltech.edu> - 2012-01-15 13:48 +0000
              Re: I have a small toy program... jules Gilbert <jules.stocks@gmail.com> - 2012-01-15 10:43 -0800
                Re: I have a small toy program... Thomas Richter <thor@math.tu-berlin.de> - 2012-01-15 20:44 +0100
        Re: I have a small toy program... stan <smoore@exis.net> - 2012-01-15 21:31 -0500
      Re: I have a small toy program... Sebastian <s.gesemann@gmail.com> - 2012-01-15 03:32 -0800

csiph-web