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push.replication.compression-algorithm

The compression algorithm to use when transferring compressible files to push data source slaves.

Key: push.replication.compression-algorithm
Type: PushReplicationCompressionAlgorithm allowed values: GZIP, LZF, NONE, ZSTD, ZSTD1, ZSTD2 or ZSTD3
Can be set in: collection.cfg

Description

The compression algorithm to use when transferring compressible files to push data source slaves. The following options are available:

  • GZIP: Gives good compression but is the slowest. Should be used when a slaves network bandwidth no more than 100Mbps

  • LZF: Gives good compression but still uses some CPU on the master.

  • NONE: No compression.

  • ZSTD: ZSTD with the default compression level, usually level 3. Gives good compression typically as good as gzip but runs in about 1/10 of the time.

  • ZSTD1: ZSTD but with compression level 1. Gives almost as good compression as ZSTD but is about twice as fast.

  • ZSTD2: ZSTD but with compression level 2.

  • ZSTD3: ZSTD but with compression level 3.

Default Value

Default is LZF.

push.replication.compression-algorithm=LZF

Examples

If 42 push slaves are all sharing the same 1Gbps link to master then ZSTD1 can be used to save network resources and CPU resources:

push.replication.compression-algorithm=ZSTD1

See Also