reduce context switching by increasing buffer sizes#6
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james-conn merged 1 commit intomainfrom Apr 4, 2026
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When doing file IO in
tokio, operations internally performspawn_blockingwhich spins up a dedicated thread for each task. Increasing the buffer sizes reduces the overhead involved in context switching and managing these short-lived threads. This comes at the cost of increased memory usage, but results in significantly reduced wall clock time for large files.