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Simplify the iterator adaptive splitting strategy #857

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Simplify the iterator adaptive splitting strategy #857

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5 changes: 2 additions & 3 deletions src/iter/plumbing/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -273,9 +273,8 @@ impl Splitter {
let Splitter { splits } = *self;

if stolen {
// This job was stolen! Reset the number of desired splits to the
// thread count, if that's more than we had remaining anyway.
self.splits = cmp::max(crate::current_num_threads(), self.splits / 2);
// This job was stolen! Leave the `splits` count alone while we go ahead and split
// anyway, so we dynamically get more splitting for jobs that are moving a lot.
true
} else if splits > 0 {
// We have splits remaining, make it so.
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