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| author | Kent Overstreet <kent.overstreet@gmail.com> | 2020-04-11 12:31:16 -0400 |
|---|---|---|
| committer | Kent Overstreet <kent.overstreet@gmail.com> | 2020-06-09 21:32:44 -0400 |
| commit | e2e3252698ff37b14fe8c133f27f4e1a2818f4d8 (patch) | |
| tree | 7ea781096dc5534f6fa4bc2f6a0cb82256c2a685 | |
| parent | 09caf5b5959e2a8fa87daa5213b89fb58f266f2c (diff) | |
bcachefs: Slightly reduce btree split threshold
2/3rds performs a lot better than 3/4ths on the tested workloda, leading
to significanly fewer btree node compactions.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
| -rw-r--r-- | fs/bcachefs/btree_cache.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/bcachefs/btree_cache.h b/fs/bcachefs/btree_cache.h index 132cc95a4c02..98cca30778ea 100644 --- a/fs/bcachefs/btree_cache.h +++ b/fs/bcachefs/btree_cache.h @@ -94,7 +94,7 @@ static inline unsigned btree_blocks(struct bch_fs *c) return c->opts.btree_node_size >> c->block_bits; } -#define BTREE_SPLIT_THRESHOLD(c) (btree_max_u64s(c) * 3 / 4) +#define BTREE_SPLIT_THRESHOLD(c) (btree_max_u64s(c) * 2 / 3) #define BTREE_FOREGROUND_MERGE_THRESHOLD(c) (btree_max_u64s(c) * 1 / 3) #define BTREE_FOREGROUND_MERGE_HYSTERESIS(c) \ |