Re: Re: untar with plzip faster than with lzip for no apparent reason

[Sonia Diaz Pacheco]

 wrotycz escribió:

In the source file that decompresses from a regular file to stdout (dec_stdout.cc) the block size is defined in line 41:

   enum { max_packet_size = 1 << 20 };

I was talking about lzip. I found the references to dictionary size and thought it will be trivial to change it, and see of it changes anything, but it is not. Definitely not trivial.

AFAIK, dictionary size is fixed for each compressed file and can't be changed because it has to be the same dictionary size that was used in the compression. See http://www.nongnu.org/lzip/manual/lzip_manual.html#File-format

Maybe a misunderstanding in all this conversation about block sizes is that lzip is a (de)compressor while plzip is just a "data block manager" which sends and receives blocks to/from the real (de)compressor (lzlib).

Cheers,

Sonia