netdev - Re: [RFC net-next 1/3] netdev: add per-queue statistics

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Message-ID: <Zdgf3EkGEWRfOjq5@google.com>
Date: Thu, 22 Feb 2024 20:32:39 -0800
From: Stanislav Fomichev <sdf@...gle.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: amritha.nambiar@...el.com, davem@...emloft.net, netdev@...r.kernel.org, 
	edumazet@...gle.com, pabeni@...hat.com, danielj@...dia.com, mst@...hat.com, 
	michael.chan@...adcom.com
Subject: Re: [RFC net-next 1/3] netdev: add per-queue statistics

On 02/22, Jakub Kicinski wrote:
> On Thu, 22 Feb 2024 16:29:08 -0800 Nambiar, Amritha wrote:
> > Thanks, this almost has all the bits to also lookup stats for a single 
> > queue with --do stats-get with a queue id and type.
> 
> We could without the projection. The projection (BTW not a great name,
> couldn't come up with a better one.. split? dis-aggregation? view?
> un-grouping?) "splits" a single object (netdev stats) across components

How about "scope" ? Device scope. Queue scope.

> (queues). I was wondering if at some point we may add another
> projection, splitting a queue. And then a queue+id+projection would
> actually have to return multiple objects. So maybe it's more consistent
> to just not support do at all for this op, and only support dump?
> 
> We can support filtered dump on ifindex + queue id + type, and expect
> it to return one object for now.
> 
> Not 100% sure so I went with the "keep it simple, we can add more later"
> approach.