perf: optimize countingWaitGroup for faster Count() operations #9162
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Improve performance of the countingWaitGroup implementation while maintaining the original behavior: - Use atomic.Int64 for the counter to enable lock-free Count() reads - Keep mutex synchronization for Add() and Done() to ensure atomicity between WaitGroup operations and counter updates - Significantly reduce contention when multiple goroutines read the count while operations are in progress This change improves performance when the beacon rebalancing logic frequently checks the Count() value. Signed-off-by: Mathias Bogaert <[email protected]>
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Improve performance of the countingWaitGroup implementation while
maintaining the original behavior:
between WaitGroup operations and counter updates
while operations are in progress
This change improves performance when the beacon rebalancing logic
frequently checks the Count() value.