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Increase the size of the style sharing cache to 31.

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Still a lot of guesswork here, but this does seem to get us better sharing.  See
https://bugzilla.mozilla.org/show_bug.cgi?id=1369621 for some data.
This commit is contained in:
Boris Zbarsky 2017-06-06 22:11:59 -04:00
parent f388c0ab1e
commit 21eafaa9f8
2 changed files with 10 additions and 6 deletions
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6
components/style/sharing/mod.rs
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@ -84,8 +84,10 @@ use stylist::{ApplicableDeclarationBlock, Stylist};
mod checks;
/// The amount of nodes that the style sharing candidate cache should hold at
/// most.
pub const STYLE_SHARING_CANDIDATE_CACHE_SIZE: usize = 8;
/// 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.
pub const STYLE_SHARING_CANDIDATE_CACHE_SIZE: usize = 31;
/// Controls whether the style sharing cache is used.
#[derive(Clone, Copy, PartialEq)]