> On 12 Jul 2021, at 7:51, kumar Amber wrote:
> 
> > This commits add the mfex optimized options to be
> > executed as part of scalar DPIF.
> >
> > Signed-off-by: kumar Amber <[email protected]>
> > Acked-by: Flavio Leitner <[email protected]>
> 
> The patch in general looks good to me, however, the only concern is the
> performance impact when AVX512 is not enabled compared to the master
> branch without the MFEX patch.
> 
> Up until this patch, the performance compared to the master branch is actually
> up about .14 ~ .5% for the PVP use case. After applying this patch the
> performance is down compared to the master branch, -.24 ~ -.6%.
> 
> So the question to the upstream community is, are we ok with the performance
> drop for all the users who do not want to enable AVX512 or don’t have AVX512?
> 

Because of the performance drop it causes I'm wondering does it warrant some 
more investigation and possibly wider base of testing?

IMO we could defer this patch and remove it for the v11 revision of the series. 
This should help keep it on track for merging.

Regards
Ian

> //Eelco

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