zfs/man
George Melikov 7eb2da21e9 zio_compress: introduce max size threshold
Now default compression is lz4, which can stop
compression process by itself on incompressible data.
If there are additional size checks -
we will only make our compressratio worse.

New usable compression thresholds are:
- less than BPE_PAYLOAD_SIZE (embedded_data feature);
- at least one saved sector.

Old 12.5% threshold is left to minimize affect
on existing user expectations of CPU utilization.

If data wasn't compressed - it will be saved as
ZIO_COMPRESS_OFF, so if we really need to recompress
data without ashift info and check anything -
we can just compress it with zero threshold.
So, we don't need a new feature flag here!

Signed-off-by: George Melikov <mail@gmelikov.ru>
2024-08-29 00:46:48 +03:00
..
man1 RAID-Z expansion feature 2023-11-08 10:19:41 -08:00
man4 Ignore zfs_arc_shrinker_limit in direct reclaim mode 2024-08-21 10:00:33 -07:00
man5 Consistentify miscellaneous style on remaining manpages 2021-06-09 14:35:53 -07:00
man7 zio_compress: introduce max size threshold 2024-08-29 00:46:48 +03:00
man8 zpool: Provide GUID to zpool-reguid(8) with -g (#16239) 2024-08-26 09:27:24 -07:00
Makefile.am ddt: add support for prefetching tables into the ARC 2024-07-26 09:16:18 -07:00