Re: [virtio-dev] RE: [PATCH v5 2/2] virtio-net: use mtu size as buffer length for big packets

On 9/7/2022 12:51 PM, Parav Pandit wrote:

quoted

And I'd like commit log to include results of perf testing
- with indirect feature on

Which device do you suggest using for this test?

You may use software vhost-net backend with and without fix to compare. 
Since this driver fix effectively lowers down the buffer size for the 
indirect=on case as well, it's a natural request to make sure no perf 
degradation is seen on devices with indirect descriptor enabled. I don't 
expect degradation though and think this patch should improve efficiency 
with less memory foot print.

Cheers,
-Siwei