cfs_gc (boolean)
Enables/disables background garbage collection of compressed pages.
Default: on
cfs_encryption (boolean)
Enables/disables encryption of compressed pages.
This parameter can only be set at server start.
Default: off
cfs_gc_workers (integer)
Number of CFS background garbage collection workers. This parameter can only be set at server start. Default: 1
cfs_level (integer)
CFS compression level: 0 — no compression, 1 — maximal speed.
Other possible values depend on the specific compression algorithm used.
For example, 9 for zlib or 19 for zstd.
Default: 1
cfs_gc_threshold (integer)
Minimum percent of garbage blocks in the file required to start garbage collection. If you would like to manually defragment a relation with a smaller percent of garbage, you can temporarily set this parameter to a smaller value for your current session. Default: 50
cfs_gc_period (integer)
Time interval between CFS garbage collection iterations, in milliseconds. Default: 5 seconds
cfs_compress_temp_relations (bool)
When set to true, compresses temporary tables.
For large temporary tables, this setting can save disk space and
speed up execution as less data needs to be read.
This parameter can only be set at server start.
Default: false
cfs_compress_small_relations (bool)
Compress the first segment of relations. If you set this option
to false, only those relations that are larger
than the segment size (1GB) are compressed, starting from the second
segment. This setting can be useful for databases with multiple small
relations as maintaining a map for a large number of compressed tables
can cause significant overhead. Note that uncompressed segments will
not be encrypted.
This parameter can only be set at server start.
Default: true
cfs_gc_delay (integer)
Time interval for which garbage collection is paused after each file defragmentation, in milliseconds. Default: 0