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

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Message-ID: <Z+R9d55KFikYXGm0@boxer>
Date: Wed, 26 Mar 2025 23:19:35 +0100
From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To: Samiullah Khawaja <skhawaja@...gle.com>
CC: Stanislav Fomichev <stfomichev@...il.com>, 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 Wed, Mar 26, 2025 at 02:12:17PM -0700, Samiullah Khawaja wrote:
> 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.
> 

As you said it's benchmarking tool so I feel like it should land in
https://github.com/xdp-project/bpf-examples where we have xdpsock that
have been previously used for benchmarks.