On Thu, 14 Nov 2024 00:44:35 GMT, Volodymyr Paprotski <vpaprot...@openjdk.org> 
wrote:

>> Measuring throughput with JMH parameters `-f 1 -i 2 -wi 3 -r 20 -w 30  -p 
>> algorithm=AES/CBC/NoPadding -p dataSize=30000000 -p provider=SunJCE -p 
>> keyLength=128 org.openjdk.bench.javax.crypto.full.AESBench`
>> 
>> Before:
>> 
>> Benchmark                (algorithm)  (dataSize)  (keyLength)  (provider)   
>> Mode  Cnt   Score   Error  Units
>> AESBench.decrypt   AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2  25.383          ops/s
>> AESBench.decrypt2  AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2  32.230          ops/s
>> AESBench.encrypt   AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2  20.489          ops/s
>> AESBench.encrypt2  AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2  21.383          ops/s
>> 
>> 
>> After:
>> 
>> Benchmark                (algorithm)  (dataSize)  (keyLength)  (provider)   
>> Mode  Cnt    Score   Error  Units
>> AESBench.decrypt   AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2  215.144          ops/s
>> AESBench.decrypt2  AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2  411.265          ops/s
>> AESBench.encrypt   AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2   64.341          ops/s
>> AESBench.encrypt2  AES/CBC/NoPadding    30000000          128      SunJCE  
>> thrpt    2   73.114          ops/s
>> 
>> 
>> I have not deterministically proven why chunking works: before the change, 
>> the CBC intrinsic is not being used; and after chunking, it is. There is 
>> quite a bit of GC activity in the default AESBench, so `encrypt2/decrypt2` 
>> versions isolate just crypto (see comment below).
>
> Volodymyr Paprotski has updated the pull request incrementally with one 
> additional commit since the last revision:
> 
>   comments from Kevin

Any measurable change in existing AES/CBC benchmarks with smaller payloads?

-------------

PR Comment: https://git.openjdk.org/jdk/pull/22086#issuecomment-2476277105

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