linux-kernel - Re: [PATCH net-next] virtio-net: tweak for better TX performance in NAPI mode

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <CAPpAL=zF3oFO3OSO793Hk0YQGh2PK7RsdjZ5bD19-EHFe_6CyA@mail.gmail.com>
Date: Fri, 28 Feb 2025 18:03:52 +0800
From: Lei Yang <leiyang@...hat.com>
To: Jason Wang <jasowang@...hat.com>
Cc: mst@...hat.com, andrew+netdev@...n.ch, davem@...emloft.net, 
	edumazet@...gle.com, pabeni@...hat.com, xuanzhuo@...ux.alibaba.com, 
	patchwork-bot+netdevbpf@...nel.org, eperezma@...hat.com, 
	virtualization@...ts.linux.dev, netdev@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] virtio-net: tweak for better TX performance in
 NAPI mode

I tested this patch with virtio-net regression tests, everything works fine.

Tested-by: Lei Yang <leiyang@...hat.com>

On Mon, Feb 24, 2025 at 4:20 PM <patchwork-bot+netdevbpf@...nel.org> wrote:
>
> Hello:
>
> This patch was applied to netdev/net-next.git (main)
> by David S. Miller <davem@...emloft.net>:
>
> On Tue, 18 Feb 2025 10:39:08 +0800 you wrote:
> > There are several issues existed in start_xmit():
> >
> > - Transmitted packets need to be freed before sending a packet, this
> >   introduces delay and increases the average packets transmit
> >   time. This also increase the time that spent in holding the TX lock.
> > - Notification is enabled after free_old_xmit_skbs() which will
> >   introduce unnecessary interrupts if TX notification happens on the
> >   same CPU that is doing the transmission now (actually, virtio-net
> >   driver are optimized for this case).
> >
> > [...]
>
> Here is the summary with links:
>   - [net-next] virtio-net: tweak for better TX performance in NAPI mode
>     https://git.kernel.org/netdev/net-next/c/e13b6da7045f
>
> You are awesome, thank you!
> --
> Deet-doot-dot, I am a bot.
> https://korg.docs.kernel.org/patchwork/pwbot.html
>
>
>