4 Commits

Author	SHA1	Message	Date
John Kåre Alsaker	cd18a8d287	Tweak VecCache to improve performance	2026-01-26 22:36:00 +01:00
Josh Triplett	9837c3c3f8	Simplify vec_cache::tests::slot_index_exhaustive by pulling out 0 case ... `slot_index_exhaustive` has additional complexity in its loop that only applies for index 0. Pull that case out of the loop.	2025-06-05 12:12:28 -07:00
bjorn3	1fcae03369	Rustfmt	2025-02-08 22:12:13 +00:00
Mark Rousskov	da58efb11d	Improve VecCache under parallel frontend ... This replaces the single Vec allocation with a series of progressively larger buckets. With the cfg for parallel enabled but with -Zthreads=1, this looks like a slight regression in i-count and cycle counts (<0.1%). With the parallel frontend at -Zthreads=4, this is an improvement (-5% wall-time from 5.788 to 5.4688 on libcore) than our current Lock-based approach, likely due to reducing the bouncing of the cache line holding the lock. At -Zthreads=32 it's a huge improvement (-46%: 8.829 -> 4.7319 seconds).	2024-11-15 18:20:32 -05:00