Alok Aggarwal wrote:
>
> On Tue, 18 Mar 2008, Moinak Ghosh wrote:
>
>> Hi Folks,
>>
>>   The present LiveCD contents can be better compressed to
>> free up several tens of MBs more. Firstly Distro Constructor
>> is calling lofiadm -C <filename> whereas it should call
>> lofiadm -C gzip-9 <filename>. Even while compressing the
>> microroot gzip -9 should be invoked.
>>
>> Secondly 7Zip (p7zip package) has the ability to compress
>> in Gzip format but achieve better compression than Gzip itself.
>> The resulting archive can be extracted by gunzip and does not
>> impact decompression time. However lofiadm will need to be
>> enhanced with a new algorithm type: gzip-7z
>
> Do you have any numbers around the compression ratios
> achieved but p7zip's implementation of gzip?

   From past experience it will probably be around 2% better which
   will mean around 20MB savings after compression.

   In addition compressing the archive file using 7za(LZMA) will
   reduce it's size to 1/3rd of the current 40MB.

Regards,
Moinak.

>
> Alok


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