Am Freitag, 9. Juni 2023, 10:02:32 CEST schrieb kernel test robot:
Hi,
> Hello,
>
> kernel test robot noticed a -8.0% regression of stress-ng.af-alg.ops_per_sec
> on:
>
>
> commit: bb897c55042e9330bcf88b4b13cbdd6f9fabdd5e ("crypto: jitter - replace
> LFSR with SHA3-256")
> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master
>
> testcase: stress-ng
> test machine: 36 threads 1 sockets Intel(R) Core(TM) i9-10980XE CPU @
> 3.00GHz (Cascade Lake) with 128G memory parameters:
Thank you for the report, but this change in performance is expected to ensure
proper entropy collection. I assume that the jitterentropy_rng is queried via
AF_ALG. Considering that the amount of data to be generated (and thus the
effect of the performance degradation) is small, there should be no noticeable
impact on users.
Ciao
Stephan
