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66b81b3497
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. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #15353 |
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