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>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2020-04-11 12:31:16 -04:00 • committed by Kent Overstreet
commit f270667a7f