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cow: CopyOnWriteArrayList - deterministic iterator-snapshot and synchronizedList CME demos, JMH read/write throughput, and the addLast/removeFirst fix for a real concurrent-writer race

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Claude
2026-10-01 12:09:44 +00:00
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cow/output/04-read-throughput-jmh.txt
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Benchmark (container) (writer) Mode Cnt Score Error Units
ReadThroughputBenchmark.readSum COW NONE thrpt 3 1890.457 ± 486.709 ops/ms
ReadThroughputBenchmark.readSum COW BACKGROUND thrpt 3 911.480 ± 70.801 ops/ms
ReadThroughputBenchmark.readSum SYNC NONE thrpt 3 10.311 ± 23.312 ops/ms
ReadThroughputBenchmark.readSum SYNC BACKGROUND thrpt 3 9.428 ± 12.790 ops/ms