netdev - RE: [PATCH v1 net-next 1/2] net: ena: Add ENA Express metrics support

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Message-ID: <d836aae49be1446abad6c00b38e5d2a0@amazon.com>
Date: Tue, 13 Aug 2024 11:21:08 +0000
From: "Arinzon, David" <darinzon@...zon.com>
To: Jakub Kicinski <kuba@...nel.org>
CC: David Miller <davem@...emloft.net>, "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>, Eric Dumazet <edumazet@...gle.com>, Paolo Abeni
	<pabeni@...hat.com>, "Woodhouse, David" <dwmw@...zon.co.uk>, "Machulsky,
 Zorik" <zorik@...zon.com>, "Matushevsky, Alexander" <matua@...zon.com>,
	"Bshara, Saeed" <saeedb@...zon.com>, "Wilson, Matt" <msw@...zon.com>,
	"Liguori, Anthony" <aliguori@...zon.com>, "Bshara, Nafea" <nafea@...zon.com>,
	"Belgazal, Netanel" <netanel@...zon.com>, "Saidi, Ali" <alisaidi@...zon.com>,
	"Herrenschmidt, Benjamin" <benh@...zon.com>, "Kiyanovski, Arthur"
	<akiyano@...zon.com>, "Dagan, Noam" <ndagan@...zon.com>, "Agroskin, Shay"
	<shayagr@...zon.com>, "Itzko, Shahar" <itzko@...zon.com>, "Abboud, Osama"
	<osamaabb@...zon.com>, "Ostrovsky, Evgeny" <evostrov@...zon.com>, "Tabachnik,
 Ofir" <ofirt@...zon.com>, "Beider, Ron" <rbeider@...zon.com>, "Chauskin,
 Igor" <igorch@...zon.com>
Subject: RE: [PATCH v1 net-next 1/2] net: ena: Add ENA Express metrics support

> On Sun, 11 Aug 2024 13:07:10 +0300 David Arinzon wrote:
> > +On supported instance types, the statistics will also include the ENA
> > +Express data (fields prefixed with `ena_srd`). For a complete
> > +documentation of ENA Express data refer to
> > +https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ena-
> express.html#
> > +ena-express-monitor
> 
> On a quick scan I don't see anything about statistics in this link.
> One can probably guess the meaning of most of them from the names.

Hi Jakub,

Thanks for looking into this.
There's actually wording about this in the link (in "how ENA Express works", below the note), quoting:

After you've enabled ENA Express for the network interface attachments on both the sending instance and the receiving instance, you can use ENA Express metrics to help ensure that your instances take full advantage of the performance improvements that SRD technology provides. For more information about ENA Express metrics, see Metrics for ENA Express.

There's also a link in "see metrics for ENA Express" for further information and examples about the statistics themselves,

Thanks,
David