On Fri, Jun 26, 2020 at 12:48:06PM +0000, Maxim Mikityanskiy wrote: > Thanks a lot for your reply! It was really helpful. I have a few > comments, please see below. > > On 2020-06-24 23:21, Samudrala, Sridhar wrote: > > > ADQ also provides 2 levels of filtering compared to aRFS+XPS. The first > > level of filtering selects a queue-set associated with the application > > and the second level filter or RSS will select a queue within that queue > > set associated with an app thread. > > This difference looks important. So, ADQ reserves a dedicated set of > queues solely for the application use.
I wanted to break this out as it looks like the most interesting part. There are several use cases where the application needs to have its packets arrive on a specific queue (or queue set): AF_XDP, and other zero-copy work. Having the app bind to a napi_id doesn't seem to provide the same functionality. > Ethtool RSS context API (look for "context" in man ethtool) seems more > appropriate for the RX side for this purpose. Agreed. -- Jonathan
