netdev - Re: [PATCH v2 net] sfc: use budget for TX completions

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Date: Sat, 17 Jun 2023 07:10:20 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Íñigo Huguet <ihuguet@...hat.com>@codeaurora.org
Cc: ecree.xilinx@...il.com, habetsm.xilinx@...il.com, davem@...emloft.net,
 edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com,
 netdev@...r.kernel.org, linux-net-drivers@....com, bkenward@...arflare.com,
 feliu@...hat.com
Subject: Re: [PATCH v2 net] sfc: use budget for TX completions

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Thu, 15 Jun 2023 10:49:29 +0200 you wrote:
> When running workloads heavy unbalanced towards TX (high TX, low RX
> traffic), sfc driver can retain the CPU during too long times. Although
> in many cases this is not enough to be visible, it can affect
> performance and system responsiveness.
> 
> A way to reproduce it is to use a debug kernel and run some parallel
> netperf TX tests. In some systems, this will lead to this message being
> logged:
>   kernel:watchdog: BUG: soft lockup - CPU#12 stuck for 22s!
> 
> [...]

Here is the summary with links:
  - [v2,net] sfc: use budget for TX completions
    https://git.kernel.org/netdev/net/c/4aaf2c52834b

You are awesome, thank you!
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