[dpdk-dev] rte_memcpy - fence and stream

[Bruce Richardson]

On Thu, May 27, 2021 at 10:39:59PM +0530, Manish Sharma wrote:
>    For the case I have, hardly 2% of the data buffers which are being
>    copied get looked at - mostly its for DMA. Having a version of DPDK
>    memcopy that does non temporal copies would definitely be good.
>    If in my case, I have a lot of CPUs doing the copy in parallel, would
>    I/OAT driver copy accelerator still help?
> 
It will depend upon the size of the copies being done. For bigger packets
the accelerator can help free up CPU cycles for other things.

However, if only 2% of the data which is being copied gets looked at, why
does it need to be copied? Can the original buffers not be used in that
case?

Regards,
/Bruce