Help Center/ GaussDB(DWS)/ Developer Guide/ Developer Guide (9.1.0.x)/ GUC Parameters of the GaussDB(DWS) Database/ Resource Consumption/ Disk Caching

Updated on 2025-07-22 GMT+08:00

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Disk Caching

The following parameters are supported only by clusters of version 9.1.0 or later.

enable_disk_cache

Parameter description: Specifies whether to enable file caching. Setting this parameter to on only takes effect when enable_aio_scheduler is set to on and obs_worker_pool_size is greater than or equal to 4.

Type: USERSET

Value range: Boolean

Default value: off

enable_disk_cache_recovery

Parameter description: Specifies whether file caching can be restored when the cluster is restarted.

Type: USERSET

Value range: Boolean

Default value: off

Parent Topic: Resource Consumption

Previous topic: Asynchronous I/O Operations

Next topic: Parallel Data Import

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