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

From: Mathias Nyman
Date: Thu Feb 08 2024 - 10:42:31 EST

On 8.2.2024 12.32, Mikhail Gavrilov wrote:
On Thu, Feb 8, 2024 at 2:23 PM Mathias Nyman
<mathias.nyman@xxxxxxxxxxxxxxx> 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?

Not sure, I'm not that familiar with this area.
Maybe running irqbalance could help?