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: Mon, 19 Feb 2024 14:41:49 +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 8:42 PM Mathias Nyman
<mathias.nyman@...ux.intel.com> wrote:
>
> On 8.2.2024 12.32, Mikhail Gavrilov wrote:
> > 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?
>
> Not sure, I'm not that familiar with this area.
> Maybe running irqbalance could help?

I installed irqbalance daemon and nothing changed.
So who is responsible for irq balancing?

-- 
Best Regards,
Mike Gavrilov.

Download attachment "measuaments-irqbalance.zip" of type "application/zip" (1214 bytes)