Add warning log to EvictionQueue::Purge for slow purges#58
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…ed > 1s Instruments the Purge loop with timing and counters to detect when purge takes unexpectedly long, which helps diagnose eviction queue pressure. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Compute iterations, alive/dead counts from initial_max_purges, max_purges, and total_dead_nodes delta — no need to modify PurgeIteration's signature. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Summary
DUCKDB_LOG_WARNINGtoEvictionQueue::Purgethat fires when iterations > 10 or elapsed time > 1 secondTest plan
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