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Switch dnode stats to wmsums

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I've noticed that some of those counters are used in hot paths like
dnode_hold_impl(), and results of this change is visible in profiler.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Richard Yao <richard.yao@alumni.stonybrook.edu>
Reviewed-by: Ryan Moeller <ryan@iXsystems.com>
Signed-off-by: Alexander Motin <mav@FreeBSD.org>
Closes #14198
This commit is contained in:
Alexander Motin
2022-11-29 12:33:45 -05:00
committed by Brian Behlendorf
parent eb68e3cd56
commit 04a6ae0585
2 changed files with 161 additions and 1 deletions
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include/sys/dnode.h
+34 -1
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@@ -36,6 +36,7 @@
#include <sys/dmu_zfetch.h>
#include <sys/zrlock.h>
#include <sys/multilist.h>
#include <sys/wmsum.h>
#ifdef __cplusplus
extern "C" {
@@ -587,10 +588,42 @@ typedef struct dnode_stats {
kstat_named_t dnode_move_active;
} dnode_stats_t;
typedef struct dnode_sums {
wmsum_t dnode_hold_dbuf_hold;
wmsum_t dnode_hold_dbuf_read;
wmsum_t dnode_hold_alloc_hits;
wmsum_t dnode_hold_alloc_misses;
wmsum_t dnode_hold_alloc_interior;
wmsum_t dnode_hold_alloc_lock_retry;
wmsum_t dnode_hold_alloc_lock_misses;
wmsum_t dnode_hold_alloc_type_none;
wmsum_t dnode_hold_free_hits;
wmsum_t dnode_hold_free_misses;
wmsum_t dnode_hold_free_lock_misses;
wmsum_t dnode_hold_free_lock_retry;
wmsum_t dnode_hold_free_refcount;
wmsum_t dnode_hold_free_overflow;
wmsum_t dnode_free_interior_lock_retry;
wmsum_t dnode_allocate;
wmsum_t dnode_reallocate;
wmsum_t dnode_buf_evict;
wmsum_t dnode_alloc_next_chunk;
wmsum_t dnode_alloc_race;
wmsum_t dnode_alloc_next_block;
wmsum_t dnode_move_invalid;
wmsum_t dnode_move_recheck1;
wmsum_t dnode_move_recheck2;
wmsum_t dnode_move_special;
wmsum_t dnode_move_handle;
wmsum_t dnode_move_rwlock;
wmsum_t dnode_move_active;
} dnode_sums_t;
extern dnode_stats_t dnode_stats;
extern dnode_sums_t dnode_sums;
#define DNODE_STAT_INCR(stat, val) \
atomic_add_64(&dnode_stats.stat.value.ui64, (val));
wmsum_add(&dnode_sums.stat, (val))
#define DNODE_STAT_BUMP(stat) \
DNODE_STAT_INCR(stat, 1);