Reduce SPIN_LIMIT in Backoff

taiki-e · Jul 21, 2022 · 0362ffe · 0362ffe
1 parent 6baa072
commit 0362ffe
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/crossbeam-utils/src/backoff.rs b/crossbeam-utils/src/backoff.rs
@@ -2,7 +2,8 @@ use crate::primitive::sync::atomic;
 use core::cell::Cell;
 use core::fmt;
 
-const SPIN_LIMIT: u32 = 6;
+// https://github.com/oneapi-src/oneTBB/blob/v2021.5.0/include/oneapi/tbb/detail/_utils.h#L46-L48
+const SPIN_LIMIT: u32 = 4;
 const YIELD_LIMIT: u32 = 10;
 
 /// Performs exponential backoff in spin loops.