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From: "Toke Høiland-Jørgensen" <toke@redhat.com>
To: Maciej Fijalkowski <maciej.fijalkowski@intel.com>,
	intel-wired-lan@lists.osuosl.org
Cc: netdev@vger.kernel.org, bpf@vger.kernel.org, davem@davemloft.net,
	anthony.l.nguyen@intel.com, kuba@kernel.org, bjorn@kernel.org,
	magnus.karlsson@intel.com, joamaki@gmail.com,
	Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Subject: Re: [PATCH v2 intel-next 0/4] XDP_TX improvements for ice
Date: Mon, 05 Jul 2021 19:06:26 +0200	[thread overview]
Message-ID: <87sg0sy9kd.fsf@toke.dk> (raw)
In-Reply-To: <20210705164338.58313-1-maciej.fijalkowski@intel.com>

Maciej Fijalkowski <maciej.fijalkowski@intel.com> writes:

> Hi,
>
> this is a second revision of a series around XDP_TX improvements for ice
> driver. When compared to v1 (which can be found under [1]), two new
> patches are introduced that are focused on improving the performance for
> XDP_TX as Jussi reported that the numbers were pretty low on his side.
> Furthermore the fallback path is now based on static branch, as
> suggested by Toke on v1. This means that there's no further need for a
> standalone net_device_ops that were serving the locked version of
> ndo_xdp_xmit callback.
>
> Idea from 2nd patch is borrowed from a joint work that was done against
> OOT driver among with Sridhar Samudrala, Jesse Brandeburg and Piotr
> Raczynski, where we working on fixing the scaling issues for Tx AF_XDP
> ZC path.
>
> Last but not least, with this series I observe the improvement of
> performance by around 30%.

Wow, "but not least" indeed! :D
You can't just drop that at the end like that! I want details -
whaddyamean, "by around 30%"? In all cases? Only for TX? Gimme numbers! :)

-Toke


      parent reply	other threads:[~2021-07-05 17:06 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-05 16:43 Maciej Fijalkowski
2021-07-05 16:43 ` [PATCH v2 intel-next 1/4] ice: unify xdp_rings accesses Maciej Fijalkowski
2021-07-05 16:43 ` [PATCH v2 intel-next 2/4] ice: optimize XDP_TX descriptor processing Maciej Fijalkowski
2021-07-05 16:43 ` [PATCH v2 intel-next 3/4] ice: do not create xdp_frame on XDP_TX Maciej Fijalkowski
2021-07-05 16:43 ` [PATCH v2 intel-next 4/4] ice: introduce XDP_TX fallback path Maciej Fijalkowski
2021-07-05 17:06 ` Toke Høiland-Jørgensen [this message]

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