From: Stephen Hemminger <stephen@networkplumber.org>
To: "Mattias Rönnblom" <mattias.ronnblom@ericsson.com>
Cc: dev@dpdk.org, "Mattias Rönnblom" <hofors@lysator.liu.se>,
"Naga Harish K S V" <s.v.naga.harish.k@intel.com>,
"Jerin Jacob" <jerinj@marvell.com>,
"Peter Nilsson" <peter.j.nilsson@ericsson.com>
Subject: Re: [PATCH] event/eth_tx: prefetch mbuf headers
Date: Thu, 10 Jul 2025 08:37:47 -0700 [thread overview]
Message-ID: <20250710083747.6f613e7f@hermes.local> (raw)
In-Reply-To: <20250328054339.489914-1-mattias.ronnblom@ericsson.com>
On Fri, 28 Mar 2025 06:43:39 +0100
Mattias Rönnblom <mattias.ronnblom@ericsson.com> wrote:
> Prefetch mbuf headers, resulting in ~10% throughput improvement when
> the Ethernet RX and TX Adapters are hosted on the same core (likely
> ~2x in case a dedicated TX core is used).
>
> Signed-off-by: Mattias Rönnblom <mattias.ronnblom@ericsson.com>
> Tested-by: Peter Nilsson <peter.j.nilsson@ericsson.com>
Prefetching all the mbufs can be counter productive on a big burst.
VPP does something similar but more unrolled.
See https://fd.io/docs/vpp/v2101/gettingstarted/developers/vnet.html#single-dual-loops
prev parent reply other threads:[~2025-07-10 15:37 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-28 5:43 Mattias Rönnblom
2025-03-28 6:07 ` Mattias Rönnblom
2025-05-20 12:56 ` Mattias Rönnblom
2025-05-27 5:01 ` [EXTERNAL] " Jerin Jacob
2025-05-27 10:55 ` Naga Harish K, S V
2025-07-02 20:19 ` Mattias Rönnblom
2025-07-07 9:00 ` Naga Harish K, S V
2025-07-07 11:57 ` Mattias Rönnblom
2025-07-10 4:34 ` Naga Harish K, S V
2025-07-10 15:37 ` Stephen Hemminger [this message]
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