netdev - Re: [RFC PATCH net-next] Add xsk_rr an AF

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Message-ID: <CAAywjhTzmupd=ehmve=iDtK638=6_yKyi9WOM9L=tG2CM4n=oQ@mail.gmail.com>
Date: Wed, 26 Mar 2025 14:12:17 -0700
From: Samiullah Khawaja <skhawaja@...gle.com>
To: Stanislav Fomichev <stfomichev@...il.com>
Cc: Jakub Kicinski <kuba@...nel.org>, "David S . Miller" <davem@...emloft.net>, 
	Eric Dumazet <edumazet@...gle.com>, Paolo Abeni <pabeni@...hat.com>, almasrymina@...gle.com, 
	willemb@...gle.com, jdamato@...tly.com, mkarsten@...terloo.ca, 
	netdev@...r.kernel.org
Subject: Re: [RFC PATCH net-next] Add xsk_rr an AF_XDP benchmark to measure latency

On Mon, Mar 24, 2025 at 3:32 PM Stanislav Fomichev <stfomichev@...il.com> wrote:
>
> On 03/20, Samiullah Khawaja wrote:
> > Note: This is a benchmarking tool that is used for experiments in the
> > upcoming v4 of Napi threaded busypoll series. Not intended to be merged.
> >
> > xsk_rr is a benchmarking tool to measure latency using AF_XDP between
> > two nodes. The benchmark can be run with different arguments to simulate
> > traffic:
>
> We might want to have something like this, but later, once we have NIPA
> runners for vendor NICs. The test would have to live in
> tools/testing/selftests/drivers/net/hw, have a python executor to run
I agree. I can send another version of this for that directory later.
> it on host/peer and expose the data in some ingestible/trackable format
> (so we can mark it red/green depending on the range on the dashboard).
>
> But I might be wrong, having flaky (most of them are) perf tests might not
> be super valuable.