mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: Ferenc Fejes <ferenc@fejes.dev>
To: Xin Zhao <jackzxcui1989@163.com>, willemdebruijn.kernel@gmail.com
Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org,
	pabeni@redhat.com, 	horms@kernel.org, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] net: af_packet: add af_packet hrtimer mode
Date: Wed, 06 Aug 2025 09:24:57 +0200	[thread overview]
Message-ID: <2fb8917d59b22dd78fe1ff216157eea7128e5990.camel@fejes.dev> (raw)
In-Reply-To: <20250806055210.1530081-1-jackzxcui1989@163.com>

On Wed, 2025-08-06 at 13:52 +0800, Xin Zhao wrote:
> In a system with high real-time requirements, the timeout mechanism of
> ordinary timers with jiffies granularity is insufficient to meet the
> demands for real-time performance. Meanwhile, the optimization of CPU
> usage with af_packet is quite significant. Add hrtimer mode to help
> compensate for the shortcomings in real-time performance.

Do you have performance numbers? It would be nice to see the test environment,
measurements carried out and some latency/jitter numbers.

Thanks,
Ferenc

  reply	other threads:[~2025-08-06  7:25 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-08-06  5:52 Xin Zhao
2025-08-06  7:24 ` Ferenc Fejes [this message]
2025-08-06  8:51 ` Eric Dumazet
2025-08-06 20:28 ` kernel test robot
2025-08-08  4:33 Xin Zhao
2025-08-08 11:39 ` Ferenc Fejes
2025-08-08  5:06 Xin Zhao
2025-08-08  6:01 ` Eric Dumazet
2025-08-08  7:28 Xin Zhao
2025-08-09  8:57 Xin Zhao

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=2fb8917d59b22dd78fe1ff216157eea7128e5990.camel@fejes.dev \
    --to=ferenc@fejes.dev \
    --cc=davem@davemloft.net \
    --cc=edumazet@google.com \
    --cc=horms@kernel.org \
    --cc=jackzxcui1989@163.com \
    --cc=kuba@kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=netdev@vger.kernel.org \
    --cc=pabeni@redhat.com \
    --cc=willemdebruijn.kernel@gmail.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®