Erblichs wrote:
So, my first order would be to take 1GB or 10GB .wav files
AND time both the kernel implementation of Gzip and the
user application. Approx the same times MAY indicate
that the kernel implementation gzip funcs should
be treatedly maybe more as interactive scheduling
threads and that it is too high and blocks other
threads or proces from executing.
If you just run gzip(1) against the files you are operating on the whole
file so you only incur startup costs once and are thus doing quite a
different compression to operating on a block level. A fairer
comparison would be to build a userland program that compresses and then
writes to disk in ZFS blocksize chunks, that way you are compressing the
same sizes of data and doing the startup every time just like zio has to do.
--
Darren J Moffat
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