zpool-prefetch8
Prefetch pool metadata into arc
Usage
zpool prefetch
[-t
type]
pool
Overview
Massively prefetch metadata of a specific type for the given pool into the ARC to reduce latency of some operations later. If no type is specified, all types are prefetched.
The following types are supported:
brt-
Prefetch the BRT (block reference table). This may improve performance for block cloning operations, and frees for earlier cloned blocks.
ddt-
Prefetch the DDT (deduplication table). This may improve performance of writes when deduplication is enabled, and frees for earlier deduplicated blocks.
Releases
3 releases since FreeBSD 15.0-RELEASE; the text changed 1 time.