http://bugzilla.suse.com/show_bug.cgi?id=1119649
http://bugzilla.suse.com/show_bug.cgi?id=1119649#c37
--- Comment #37 from david chang
(In reply to david chang from comment #30)
(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.
Thank you for the testing! Did you ever do the performance test without NFS? ex: download directly or iperf.. -- You are receiving this mail because: You are on the CC list for the bug.