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Maintained by AxonOps — production-grade documentation from engineers who operate distributed databases at scale

nodetool getconcurrency

Displays the concurrency settings.

Synopsis

nodetool [connection_options] getconcurrency [stage_name ...]

Arguments

Argument Description
stage_name Optional. One or more stage names to filter output (e.g., READ, MUTATION)

Description

nodetool getconcurrency displays the core and maximum pool sizes for Cassandra's thread stages. These stages handle various internal operations and can be filtered by name.

Output Format

Field Description
Stage Thread stage name
CorePoolSize Minimum number of threads maintained
MaximumPoolSize Maximum threads allowed under load

Examples

Basic Usage (All Stages)

nodetool getconcurrency

Sample output: 

Stage                           CorePoolSize  MaximumPoolSize
READ                            32            32
MUTATION                        32            32
COUNTER_MUTATION                32            32
...

Filter by Stage Name

nodetool getconcurrency READ MUTATION
Command Relationship
setconcurrency Modify concurrency
tpstats Thread pool statistics