asmhatreandClaude Sonnet 5.5
f80e1079a8
Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b7rnC7jppGGdHGESvy
23 lines
2.0 KiB
Plaintext
23 lines
2.0 KiB
Plaintext
threads=8, increments per thread=200,000, rounds=5, cores=2
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Counts below VARY from run to run. Only the 'expected' column is fixed.
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HashMap get+put expected 1,600,000 actual per round: 228,496 400,000 287,091 1,200,000 451,357
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lost updates per round: min 400,000, max 1,371,504
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Collections.synchronizedMap get+put expected 1,600,000 actual per round: 282,588 398,788 918,560 433,831 691,994
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lost updates per round: min 681,440, max 1,317,412
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ConcurrentHashMap get+put expected 1,600,000 actual per round: 214,096 666,429 605,316 446,831 389,717
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lost updates per round: min 933,571, max 1,385,904
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HashMap + synchronized(map) around get+put expected 1,600,000 actual per round: 1,600,000 1,600,000 1,600,000 1,600,000 1,600,000
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lost updates per round: min 0, max 0
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ConcurrentHashMap merge(KEY, 1, Integer::sum) expected 1,600,000 actual per round: 1,600,000 1,600,000 1,600,000 1,600,000 1,600,000
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lost updates per round: min 0, max 0
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ConcurrentHashMap compute(KEY, v+1) expected 1,600,000 actual per round: 1,600,000 1,600,000 1,600,000 1,600,000 1,600,000
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lost updates per round: min 0, max 0
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-- second kind of damage: threads insert DIFFERENT keys, nobody overwrites anybody --
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HashMap put of distinct keys (size()) expected 400,000 actual per round: 399,522 400,000 400,000 400,000 400,000
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lost updates per round: min 0, max 478
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HashMap exceptions thrown inside worker threads, per round: [null, null, null, null, null]
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ConcurrentHashMap put of distinct keys (size()) expected 400,000 actual per round: 400,000 400,000 400,000 400,000 400,000
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lost updates per round: min 0, max 0
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