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List: rsync
Subject: variable compression feature request
From: griffin tucker via rsync <rsync () lists ! samba ! org>
Date: 2021-09-04 9:36:38
Message-ID: CAKJX5A5YtUJ2L_WQK6P-PRjrCdSiKK=MDyaKvh4ou3wffm3k7g () mail ! gmail ! com
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--compress or -z will compress during data transfer
what about a variable compression rate?
--optimal-compress or -za
monitor the speed of the transfer and the cpu throughput and
automatically find the optimum compression in almost-real-time with
the goal of reduced transfer time
i figure you'd have to mark the last block compressed/sent with extra
data indicating new blocks are using a different compression strength,
and it could work for using multiple algorithms, depending on the data
when decompressing, when detecting a new block, it will indicate
corruption in the archive, but the extra data will revert the error
indication - the `corruption' would only be up until the last block,
so the data remains intact, and the new rate/algo can begin after the
`failed' block
finding the type of data that can be compressed better/faster with
different algorithms will also be taken into account
just an idea
--
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