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Re: [Lzip-bug] Maximum number of threads supported for plzip

From: Antonio Diaz Diaz
Subject: Re: [Lzip-bug] Maximum number of threads supported for plzip
Date: Wed, 16 Oct 2013 20:45:27 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i586; en-US; rv:1.7.11) Gecko/20050905


Hsin-Hui Wu wrote:
First of all, I would like to thank you writing this wonder program.

You are welcome. :-)

I used the following two command lines.

1. plzip -9 file
2. plzip -9 --threads=32 file

What is the size of 'file'? If it is about 640 MiB, no more than 10 threads can be used to compress it at level -9.

To use 32 threads you need either 'file' to be 2 GiB long or level to be at most -6 (for a 640 MiB file).

As you can read in plzip's homepage, "On files large enough (several GB), plzip can use hundreds of processors. On files of only a few MB it is better to use lzip."

Best regards,

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