ZPOOL-PREFETCH(8)       FreeBSD System Manager's Manual      ZPOOL-PREFETCH(8)

NAME

     zpool-prefetch - Prefetches pool metadata into ARC

SYNOPSIS

     zpool prefetch [-t type] pool

DESCRIPTION

     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.

FreeBSD 15.1-STABLE-HBSD       February 14, 2024             ZPOOL-PREFETCH(8)