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chore: only alloc required capacity #19217

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Merged
mattsse merged 1 commit into from
Oct 22, 2025
Merged

chore: only alloc required capacity #19217

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6 changes: 3 additions & 3 deletions crates/engine/tree/src/tree/payload_processor/prewarm.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -147,9 +147,6 @@ where
let (done_tx, done_rx) = mpsc::channel();
let mut executing = 0usize;

// Initialize worker handles container
let mut handles = Vec::with_capacity(max_concurrency);

// When transaction_count_hint is 0, it means the count is unknown. In this case, spawn
// max workers to handle potentially many transactions in parallel rather
// than bottlenecking on a single worker.
Expand All @@ -159,6 +156,9 @@ where
transaction_count_hint.min(max_concurrency)
};

// Initialize worker handles container
let mut handles = Vec::with_capacity(workers_needed);

// Only spawn initial workers as needed
for i in 0..workers_needed {
handles.push(ctx.spawn_worker(i, &executor, actions_tx.clone(), done_tx.clone()));
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