Alexander Motin 1ced0ff5de Reduce zfs_dmu_offset_next_sync penalty ... Looking on txg_wait_synced(, 0) I've noticed that it always syncs 5 TXGs: 3 TXG_CONCURRENT_STATES + 2 TXG_DEFER_SIZE. But in case of dmu_offset_next() we do not care about deferred frees. And even concurrent TXGs we might not need sync all 3 if the dnode was not dirtied in last few TXGs. This patch makes dmu_offset_next() to sync one TXG at a time until the dnode is clean, but no more than 3 TXG_CONCURRENT_STATES times. My tests with random simultaneous writes and seeks over many files on HDD pool show 7-14% performance increase. Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Rob Norris <robn@despairlabs.com> Signed-off-by: Alexander Motin <mav@FreeBSD.org> Sponsored by: iXsystems, Inc. Closes #17434		2025-11-03 13:51:00 -08:00
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avl	Suppress Clang Static Analyzer false positive in the AVL tree code.	2023-03-08 13:51:21 -08:00
icp	Linux build: silence objtool warnings	2025-06-04 17:40:56 -07:00
lua	lua: add flex array field to TString type	2024-11-05 15:43:52 -08:00
nvpair	xdr: header cleanup	2024-04-29 13:50:05 -07:00
os	enforce arc_dnode_limit	2025-11-03 13:51:00 -08:00
unicode	Illumos #15286: do_composition() needs sign awareness	2023-01-05 11:16:21 -08:00
zcommon	GCC 15: Fix unterminated-string-initialization (#17244)	2025-05-27 15:03:11 -07:00
zfs	Reduce zfs_dmu_offset_next_sync penalty	2025-11-03 13:51:00 -08:00
zstd	Resolve WS-2021-0184 vulnerability in zstd	2023-02-02 15:12:51 -08:00
.gitignore	FreeBSD: Ignore symlink to i386 includes	2022-08-02 16:34:23 -07:00
Kbuild.in	Linux build: always use objtool	2025-05-30 15:08:01 -07:00
Makefile.bsd	zfs_znode: lift common code to a single shared file	2024-11-15 10:15:01 -08:00
Makefile.in	objtool wrapper: use absolute path to call the wrapper	2025-10-22 10:34:53 -07:00