http://bugzilla.suse.com/show_bug.cgi?id=1119649
http://bugzilla.suse.com/show_bug.cgi?id=1119649#c31
--- Comment #31 from Martti Laaksonen
(In reply to david chang from comment #29)
Hi,
There is a similar issue upstream but with different chip. https://lore.kernel.org/netdev/aead4da3-e1b0-ab6c-2842-634e175b33ab@gmail. com/
Could you give it a try with the following kernel parameter separately. - pcie_aspm=off - pcie_aspm.policy=performance
Thanks!
Also could you please get the register dump of the interface from v4.18 and v4.19 kernel? # ethtool -d enp1s0
Alright, I tried both kernel parameters with 4.18.15 and 4.19.11 kernels but did not see any change in receive performance, i.e. kernel 4.18.15 performs well whereas kernel 4.19.11 crawls at 12 MB/s when receiving. That PCIe ASPM policy setting probably does nothing since the kernel reports this: tammi 31 18:20:52 darkangel kernel: ACPI FADT declares the system doesn't support PCIe ASPM, so disable it tammi 31 18:20:52 darkangel kernel: acpi PNP0A08:00: _OSC: OS supports [ExtendedConfig ASPM ClockPM Segments MSI] tammi 31 18:20:52 darkangel kernel: acpi PNP0A08:00: FADT indicates ASPM is unsupported, using BIOS configuration Test results attached. The register dumps you asked are also included in the results. -- You are receiving this mail because: You are on the CC list for the bug.