On Friday 2019-06-07 21:14, Achim Gratz wrote:
In my experience there is a slight degradation in decompression speed for the highest compression levels
Certainly. As there is only so much CPU cache, one could expect more evictions and reloads. So I'll reword: the algorithms seem still so computationally expensive that memory timing effects from increased decompression requirements don't visibly show yet, for me.
The whole point of going to ZStd for me was to be able to decompress to local disk as fast as a filer on the LAN will deliver the data. As long as the compression ratio is better than 1:5 [5.00×?]
xz-9 does 3.5× on openSUSE packages on average; getting 5.0× requires data with more repetitions/patterns, e.g. text files/source code.
the repo size should not be neglected as most users will have to download from a relatively slow connection
Yes, I know that - especially - Germany is notorious for its unwillingness to procure contemporary Internet speeds and then some, but without actual statistics, claims such as that seem more like a folktale/anecdote. As long as there are Steam games where updates are at least as big as the openSUSE first-time installation, I feel no regrets :-) -- To unsubscribe, e-mail: opensuse-factory+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse-factory+owner@opensuse.org