This bug is awaiting verification that the linux-xilinx/6.8.0-1009.10
kernel in -proposed solves the problem. Please test the kernel and
update this bug with the results. If the problem is solved, change the
tag 'verification-needed-noble-linux-xilinx' to 'verification-done-
noble-linux-xilinx'. If the problem still exists, change the tag
'verification-needed-noble-linux-xilinx' to 'verification-failed-noble-
linux-xilinx'.
If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.
See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!
** Tags added: kernel-spammed-noble-linux-xilinx-v2 verification-needed-noble-linux-xilinx
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https://bugs.launchpad.net/bugs/2077858
Title:
Fix ethernet performance on JSL and EHL
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-6.11 package in Ubuntu:
New
Status in linux source package in Noble:
Fix Committed
Status in linux-oem-6.11 source package in Noble:
New
Status in linux source package in Oracular:
Fix Released
Status in linux-oem-6.11 source package in Oracular:
New
Bug description:
[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.
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