Cmnt: [SRU] [Unstable/OEM-5.13/OEM-5.14] [PATCH 0/1] Fix sluggish r8169 by disaling ASPM L1.2

[Koba Ko]

with aspm 1.2 enabled, can't observe the issue on JSL machine.
Could you narrow down to one Realtek's model?
Please check logs in here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1942830/comments/1

On Tue, Sep 7, 2021 at 12:15 PM Kai-Heng Feng
<kai.heng.feng at canonical.com> wrote:
>
> BugLink: https://bugs.launchpad.net/bugs/1942830
>
> [Impact]
> Realtek r8169 has abysmal network speed.
>
> [Fix]
> Disable ASPM L1.2 because the device takes a long time to exit from
> L1.2.
>
> [Test]
> Use `iperf` to test network speed.
> When ASPM L1.2 gets disabled, TX and RX and reach ~700Mbps and ~900Mbps
> respectively.
>
> [Where problems could occur]
> Disabling ASPM L1.2 can slightly increase power consumption. The CPU
> package C-State seems to be unaffected so the increase is rather minor.
>
> Kai-Heng Feng (1):
>   UBUNTU: SAUCE: r8169: Disable ASPM L1.2
>
>  drivers/net/ethernet/realtek/r8169_main.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> --
> 2.32.0
>
>
> --
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