diff options
| -rw-r--r-- | components/style/sharing/mod.rs | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/components/style/sharing/mod.rs b/components/style/sharing/mod.rs index 38fd6283436..9b8c1275e4b 100644 --- a/components/style/sharing/mod.rs +++ b/components/style/sharing/mod.rs @@ -90,17 +90,14 @@ use uluru::{Entry, LRUCache}; mod checks; /// The amount of nodes that the style sharing candidate cache should hold at -/// most. We'd somewhat like 32, but ArrayDeque only implements certain backing -/// store sizes. A cache size of 32 would mean a backing store of 33, but -/// that's not an implemented size: we can do 32 or 40. +/// most. /// /// The cache size was chosen by measuring style sharing and resulting /// performance on a few pages; sizes up to about 32 were giving good sharing /// improvements (e.g. 3x fewer styles having to be resolved than at size 8) and /// slight performance improvements. Sizes larger than 32 haven't really been /// tested. -pub const SHARING_CACHE_SIZE: usize = 31; -const SHARING_CACHE_BACKING_STORE_SIZE: usize = SHARING_CACHE_SIZE + 1; +pub const SHARING_CACHE_SIZE: usize = 32; /// Opaque pointer type to compare ComputedValues identities. #[derive(Clone, Debug, Eq, PartialEq)] @@ -426,7 +423,7 @@ impl<E: TElement> StyleSharingTarget<E> { } struct SharingCacheBase<Candidate> { - entries: LRUCache<[Entry<Candidate>; SHARING_CACHE_BACKING_STORE_SIZE]>, + entries: LRUCache<[Entry<Candidate>; SHARING_CACHE_SIZE]>, } impl<Candidate> Default for SharingCacheBase<Candidate> { |