netdev - Re: [PATCH net-next 0/2] net: default_rps

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Message-ID: <20230215150540.5441eb8c@kernel.org>
Date:   Wed, 15 Feb 2023 15:05:40 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Shuah Khan <shuah@...nel.org>
Subject: Re: [PATCH net-next 0/2] net: default_rps_mask follow-up

On Wed, 15 Feb 2023 21:33:01 +0100 Paolo Abeni wrote:
> That is not needed, as every other devices forwarding packets to the
> netns has proper isolation (RPS or IRQ affinity) already set. If the
> child ns device RPS configuration is left unchanged, the incoming
> packets in the child netns go through an unneeded RPS stage, which
> could be a bad thing if the selected CPU is on a different NUMA node.

I see your point now. Must have been low on coffee in the morning.
Thanks!