APPLIED [O] Re: [SRU] [N/O/OEM-6.11] [PATCH 0/1] Fix ethernet performance on JSL and EHL

[Timo Aaltonen]

Kai-Heng Feng kirjoitti 26.8.2024 klo 11.05:
> BugLink: https://bugs.launchpad.net/bugs/2077858
> 
> [Impact]
> Sub-optimal ethernet performance on Intel JSL and EHL platform with
> Realtek PCIe NIC.
> 
> Iperf shows the network throughput can only reach around 75% of
> 
> [Fix]
> The CPU idle state transition C1 -> C1E -> C0 overhead can be too high,
> so disabling C1E to increase the IRQ latency and DMA speed.
> 
> [Test]
> With the patch applied, iperf shows over 95% of network throughput
> consistently.
> 
> [Where problems could occur]
> Disabling C1E can theoretically increase power consumption slightly.
> 
> Kai-Heng Feng (1):
>    intel_idle: Disable promotion to C1E on Jasper Lake and Elkhart Lake
> 
>   drivers/idle/intel_idle.c | 14 ++++++++++++--
>   1 file changed, 12 insertions(+), 2 deletions(-)
> 

applied to oracular, thanks

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t