Not necessarily. If I understand correctly what Tim means, he's talking
about an in-memory compression of several blocks by several separate
threads, and then - after all the threads have compressed their
respective blocks - writing out the result to the output file in order.
Of course, this would incur a small penalty in that the dictionary would
not be reused between blocks, but it might still be worth it.
all fine. i just wanted to point out that ungzipping normal standard gzip
file cannot be multithreaded, and multithreaded-compressed gzip
output would be different.
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