Le 10/01/2018 à 10:27, Richardson, Bruce a écrit :
Hi Bruce,
Just curious, can you provide some hints on percent increase in at least
some representative cases? I'm just trying to get a sense of if this is
%5, 10%, 20%, more... I know mileage will vary depending on system, setup,
configuration, etc.
Best case conditions to test under are using testpmd as that is where any IO
improvement will be most seen. As a ballpark figure though, on my system while
testing testpmd with both 16B and 32B descriptors, (RX/TX ring sizes 1024/512)
I saw ~15% performance increase, and sometimes quite a bit higher, e.g. when
testing with 16B descriptors with larger burst sizes.
Hi Bruce,
Then, about the next limit after this performance increase: is it the
board/Mpps capacity/PCI bus? If so, you should see that CPU usage on
testpmd's cores to be decreased. Can you be more explicit about it?
What's about other packet size like 66 bytes? 122 bytes? which are not
aligned on 64 bytes.
Thank you,
Vincent
