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FDT dedup log sync -- remove incremental

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This PR condenses the FDT dedup log syncing into a single sync
pass. This reduces the overhead of modifying indirect blocks for the
dedup table multiple times per txg. In addition, changes were made to
the formula for how much to sync per txg. We now also consider the
backlog we have to clear, to prevent it from growing too large, or
remaining large on an idle system.

Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Authored-by: Don Brady <don.brady@klarasystems.com>
Authored-by: Paul Dagnelie <paul.dagnelie@klarasystems.com>
Signed-off-by: Paul Dagnelie <paul.dagnelie@klarasystems.com>
Closes #17038
This commit is contained in:
Paul Dagnelie
2025-03-13 10:47:03 -07:00
committed by GitHub
parent 084531bcce
commit 1b495eeab3
13 changed files with 366 additions and 202 deletions
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include/sys/zfs_debug.h
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@@ -59,6 +59,7 @@ extern int zfs_dbgmsg_enable;
#define ZFS_DEBUG_METASLAB_ALLOC (1 << 13)
#define ZFS_DEBUG_BRT (1 << 14)
#define ZFS_DEBUG_RAIDZ_RECONSTRUCT (1 << 15)
#define ZFS_DEBUG_DDT (1 << 16)
extern void __set_error(const char *file, const char *func, int line, int err);
extern void __zfs_dbgmsg(char *buf);