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How to read the output
I just tried running lrztar -z
on a 50gb folder with tons of duplicate/almost duplicate files.
I can see in my terminal window an output like this :
Chunk: 99% ZPAQ 1:100% 2:80% 3:50% 4:20% 5:100%
I do not understand what is the meaning of all of these percentages, I tried to research online but didn't find any explanation.
Each chunk of data to be compressed is split into blocks and passed to the ZPAQ backend in individual threads. In your case, 5 threads were passed to ZPAQ separately. The percentages are approximations of how far the ZPAQ compression has progressed. Thread 1 would be the Stream 0 and Thread 5 would be the last block of data which could be small or large up to the max size of the block. In your case, since it finished, block 5 was small. Blocks 2, 3, and 4 are 80, 50, and 20 percent complete approximately. A similar display will show for decompression.