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Reduce mutex contention #2826

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Reduce mutex contention #2826

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2 changes: 1 addition & 1 deletion include/sys/dbuf.h
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Original file line number Diff line number Diff line change
Expand Up @@ -233,7 +233,7 @@ typedef struct dmu_buf_impl {
} dmu_buf_impl_t;

/* Note: the dbuf hash table is exposed only for the mdb module */
#define DBUF_MUTEXES 256
#define DBUF_MUTEXES 8192
#define DBUF_HASH_MUTEX(h, idx) (&(h)->hash_mutexes[(idx) & (DBUF_MUTEXES-1)])
typedef struct dbuf_hash_table {
uint64_t hash_table_mask;
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2 changes: 1 addition & 1 deletion module/zfs/arc.c
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Expand Up @@ -657,7 +657,7 @@ struct ht_lock {
#endif
};

#define BUF_LOCKS 256
#define BUF_LOCKS 8192
typedef struct buf_hash_table {
uint64_t ht_mask;
arc_buf_hdr_t **ht_table;
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