overview zlib efficiency?

Anton Chevychalov
Wed, 16 Mar 2016 11:42:27 -0000

During migration from 1.x with maildir to 2.x with dbox a did the
following trick:


time dsync -R -u test at example.com backup
maildir:/var/spool/imap/tmp/Maildir

And got the following results:

|orig |366|28s |
|gz.6 |260|5min|
|bz2.6|202|5min|
|xz.1 |211|1min|
|xz.2 |213|1min50sec|
|xz.3 |201|3min|
|xz.6 |198|5min|
|xz.9 |198|10min|
|lz4  |281|18s |

1-9 - is compression level. I choose lz4 finally.

--
Anton Chevychalov

G?tz Reinicke - IT Koordinator ????? 2016-03-15 18:01:
> Hi,
>
> may be someone has already done that: Do you have a script(?) tool
> which
> shows the efficiency of the mail compression if zlib is used?
>
> Something that shows the uncompressed size vrs. the compressed.
>
> Thanks for hints! /G?tz