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The code that opens and reads the first block of the source file has to decide
whether it is compressed, in which case it forks a decompress process and
continues reading the data.
The value for -B defaults to 64MB with 32 buffers of 2MB each.
If the file size is known to be less than -B or if it fits entirely within the
first block read, then the main program sets up the library with a single block
containing the entire contents. This improves compression slightly.
However, the logic in 3.0z and earlier sets up the single-block case when the
compressed size is smaller than -B, not taking into account the decompression
that takes place. As a result, it is quite possible that raising -B reduces
compression.
Original issue reported on code.google.com by josh.mac...@gmail.com on 24 Aug 2010 at 4:57
The text was updated successfully, but these errors were encountered:
Original issue reported on code.google.com by
josh.mac...@gmail.com
on 24 Aug 2010 at 4:57The text was updated successfully, but these errors were encountered: