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ZIL: Reduce maximum size of WR_COPIED to 7.5KB #15353

Merged
merged 1 commit into from
Oct 6, 2023
Merged

ZIL: Reduce maximum size of WR_COPIED to 7.5KB #15353

merged 1 commit into from
Oct 6, 2023

Commits on Oct 4, 2023

  1. ZIL: Reduce maximum size of WR_COPIED to 7.5KB 

    Benchmarks show that at certain write sizes range lock/unlock take
not so much time as extra memory copy.  The exact threshold is not
obvious due to other overheads, but it is definitely lower than
~63KB used before.  Make it configurable, defaulting at 7.5KB,
that is 8KB of nearest malloc() size minus itx and lr structs.

Signed-off-by:	Alexander Motin <mav@FreeBSD.org>
Sponsored by:	iXsystems, Inc.
    @amotin
    amotin committed Oct 4, 2023
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