On 22/06/17 16:48, Madalin-cristian Bucur wrote:
This means all the QMan portal_isr() are distributed round-robin to all
affine portals. Is there some way to configure the software portal for a
specific network interface, e.g. use processors 0, 1, 2, 3 for one
interface,and 4, 5, 6, 7 for another?
We've stripped all configurability and advanced features from the initial
DPAA submission. We don't have options to configure this. On the other hand,
the ingress queues are held active in the portal, resulting in one CPU doing
dequeues while there are frames available. This is done to avoid frame
reordering, improving termination performance (and forwarded TCP performance).
The downside is that we're not saturating all CPUs with traffic. We're
currently working on adding Rx hashing, to be able to maintain intra-flow
frame order while spreading processing on all CPUs.
Meanwhile, would RPS (Receive Packet Steering) be a solution for you?
We receive UDP packets with an MTU of 1500 on one of the 10G interfaces
at wire speed. So, I guess I have to add this configure myself somehow
and use a dedicated software portal for this interface.
--
Sebastian Huber, embedded brains GmbH
Address : Dornierstr. 4, D-82178 Puchheim, Germany
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