Messages in this thread | | | Date | Tue, 28 Mar 2023 16:16:42 -0700 | From | Jakub Kicinski <> | Subject | Re: [PATCH net-next v2] net/core: add optional threading for backlog processing |
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On Tue, 28 Mar 2023 21:59:25 +0200 Felix Fietkau wrote: > When dealing with few flows or an imbalance on CPU utilization, static RPS > CPU assignment can be too inflexible. Add support for enabling threaded NAPI > for backlog processing in order to allow the scheduler to better balance > processing. This helps better spread the load across idle CPUs.
Can you share some numbers vs a system where RPS only spreads to the cores which are not running NAPI?
IMHO you're putting a lot of faith in the scheduler and you need to show that it actually does what you say it will do.
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