Add faster compression mode for speed extremely sensitive applications #30
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Will benchmark a bit more to see the impact of each.
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This also includes some overall tweaks to assembly, which should bring up speed in Intel.
Adds an "official" uncompressed level.
LevelSuperFast
Furthermore
LevelSuperFastis provided. This compression mode is aimed purely at reducingslowdown when compressing hard-to-compress data. In practice that is short matches.
The compression ratio can greatly suffer in this mode, but in these cases it can be faster.
So if you have a very high throughput (typically > 1GB/core/s) and a time-sensitive use case,
this can be used to ensure the compression doesn't take too much longer on this content.
For these cases the speed difference can be up to 2x over
LevelFastest, but also with amuch worse compression ratio.
However, most often it will be around 15% faster with a similar drop in the compression ratio.
Typically, the performance difference will also be the same for decompression.