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Document RocksDB variables: rocksdb_max_background_compactions, rocksdb_max_background_flushes, and rocksdb_max_bottom_pri_background_compactions

Description

Implemented at https://github.com/percona/percona-server/pull/3880

1. Add a new variable "rocksdb_max_bottom_pri_background_compactions":

:dyn: No :scope: Global :vartype: Unsigned Integer :default: 0
"Creating specified number of threads, setting lower " "CPU priority, and letting compactions use them. " "Maximum compaction concurrency is capped by " "rocksdb_max_background_compactions or " "rocksdb_max_background_jobs." min = 0, max= 64

2. Add a new variable "rocksdb_max_background_flushes":

:dyn: No :scope: Global :vartype: Integer :default: -1
"Set DBOptions::max_background_flushes for RocksDB" min = -1, max= 64

3. Add a new variable "rocksdb_max_background_compactions":

:dyn: Yes :scope: Global :vartype: Integer :default: -1
"Set DBOptions::max_background_compactions for RocksDB" min = -1, max= 64

Environment

None

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patrick.birch June 16, 2020 at 4:41 PM

Questions about rocksdb_max_background_compactions and rocksdb_max_background_flushes. These variables were implemented and replaced in 5.7.

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Created June 16, 2020 at 3:24 PM
Updated March 6, 2024 at 11:05 AM
Resolved June 29, 2020 at 12:34 PM