hi, Stephan,
On Fri, Jun 09, 2023 at 01:57:27PM +0200, Stephan Mueller wrote:
> 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.
got it. Thanks a lot for information!
>
> Ciao
> Stephan
>
>
