On Wed, 16 Nov 2022 18:48:58 GMT, Anthony Scarpino <ascarp...@openjdk.org> 
wrote:

> Thanks for looking into this, @ascarpino!
> 
> In testing this using a local build, it improves performance in cases using 
> heap buffers (a super-set of the socket case), however servers which use 
> direct byte-buffers still exhibit a similar performance regression (heavy 
> allocation compared to jdk17, ~10% slower TLS performance in HTTP+TLS 
> benchmarks). It's possible that has a different root cause, but the outcome 
> is strikingly similar.

Looking at this, it's not related to the same in-place issues.  This is a 
result of the combined intrinsics requirement .  Maybe some better tuning can 
be done, but I think this is unavoidable.  I can consider this in a future PR

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

PR: https://git.openjdk.org/jdk/pull/11121

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