From: Ivan Malov <ivan.malov@arknetworks.am>
To: "Lombardo, Ed" <Ed.Lombardo@netscout.com>
Cc: users <users@dpdk.org>
Subject: Re: Rx performance
Date: Wed, 16 Jul 2025 16:45:07 +0400 (+04) [thread overview]
Message-ID: <07233a30-d3ba-0332-baf8-4a58c116af3a@arknetworks.am> (raw)
In-Reply-To: <CH3PR01MB847019A1426FDBCD8D4C3F0F8F56A@CH3PR01MB8470.prod.exchangelabs.com>
[-- Attachment #1: Type: text/plain, Size: 704 bytes --]
Hi Ed,
On Wed, 16 Jul 2025, Lombardo, Ed wrote:
> Hi,
> I have E810-C 2x100G NIC, the perf tool shows scalar rx path and not vectorized rx path. When I turn off Rx Offload (NIC rx timestamp) I see vectorized rx path in perf tool.
>
> Why is this a drawback and is this with just the E810 NIC?
See the comment on line [1]. By the sound of it, this is somewhat expected.
[1] https://github.com/DPDK/dpdk/blob/fa3aca8a525decfd12bd5fa01ebc98789d5f7278/drivers/net/intel/common/rx.h#L104
Thank you.
>
> is there a way around this so Rx Offload Rx Timestamp can be used in our application and get vectorized rx path?
>
> We need rx timestamps of packets and max performance.
>
> Thanks,
> Ed
>
>
prev parent reply other threads:[~2025-07-16 12:45 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-16 12:29 Lombardo, Ed
2025-07-16 12:45 ` Ivan Malov [this message]
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