netdev - Re: [PATCH 2/2] virtio-net: reduce the CPU consumption of dim worker

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Date: Fri, 22 Mar 2024 13:19:29 +0800
From: Jason Wang <jasowang@...hat.com>
To: Heng Qi <hengqi@...ux.alibaba.com>
Cc: netdev@...r.kernel.org, virtualization@...ts.linux.dev, 
	"Michael S. Tsirkin" <mst@...hat.com>, Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
	Eric Dumazet <edumazet@...gle.com>, "David S. Miller" <davem@...emloft.net>, 
	Xuan Zhuo <xuanzhuo@...ux.alibaba.com>
Subject: Re: [PATCH 2/2] virtio-net: reduce the CPU consumption of dim worker

On Thu, Mar 21, 2024 at 7:46 PM Heng Qi <hengqi@...ux.alibaba.com> wrote:
>
> Currently, ctrlq processes commands in a synchronous manner,
> which increases the delay of dim commands when configuring
> multi-queue VMs, which in turn causes the CPU utilization to
> increase and interferes with the performance of dim.
>
> Therefore we asynchronously process ctlq's dim commands.
>
> Signed-off-by: Heng Qi <hengqi@...ux.alibaba.com>

I may miss some previous discussions.

But at least the changelog needs to explain why you don't use interrupt.

Thanks