CommitterAlexander Motin (mav) (1)
AuthorAlexander Motin (mav) (1)
Branchesreleng/12.1 (1)


FreeBSD/src eee3a91 (r343330) — sys/kern kern_mtxpool.c

by Alexander Motin (mav) on ⎇
Increase MTX_POOL_SLEEP_SIZE from 128 to 1024.

This value remained unchanged for 15 years, and now this bump reduces
lock spinning in GEOM and BIO layers while doing ~1.6M IOPS to 4 NVMe
on 72-core system from ~25% to ~5% by the cost of additional 28KB RAM.

While there, align struct mtx_pool fields to cache lines.
DeltaFile
+2-2sys/kern/kern_mtxpool.c
+2-21 files

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