linux-kernel - Re: This is the fourth time I’ve tried to find what led to the regression of outgoing network speed and each time I find the merge commit 8c94ccc7cd691472461448f98e2372c75849406c

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Date: Thu, 8 Feb 2024 15:32:05 +0500
From: Mikhail Gavrilov <mikhail.v.gavrilov@...il.com>
To: Mathias Nyman <mathias.nyman@...ux.intel.com>
Cc: "Christian A. Ehrhardt" <lk@...e.de>, niklas.neronin@...ux.intel.com, 
	Linux List Kernel Mailing <linux-kernel@...r.kernel.org>, Greg KH <gregkh@...uxfoundation.org>, 
	linux-usb@...r.kernel.org
Subject: Re: This is the fourth time I’ve tried to find what led to the regression of outgoing network speed and each time I find the merge commit 8c94ccc7cd691472461448f98e2372c75849406c

On Thu, Feb 8, 2024 at 2:23 PM Mathias Nyman
<mathias.nyman@...ux.intel.com> wrote:
>
> My guess is that CPU0 spends more time with interrupts disabled than other CPUs.
> Either because it's handling interrupts from some other hardware, or running
> code that disables interrupts (for example kernel code inside spin_lock_irq),
> and thus not able to handle network adapter interrupts at the same rate as CPU23
>

Can this be fixed?
Can I help you here with anything else?

-- 
Best Regards,
Mike Gavrilov.