On Sat, Feb 25, 2023 at 01:37:23PM -0500, fk1xdcio@xxxxxxxx wrote: > I'm testing a generic 4-port PCIe x4 2.5Gbps Ethernet NIC. It uses an > ASM1812 for the PCI packet switch to four RTL8125BG network controllers. > > The more load I put on the NIC the faster the system freezes. For example if > I activate four 2.5Gbps fully saturated network connections then the system > hard freezes almost immediately. When the system freezes it seems completely > dead. SysRq doesn't work, serial consoles are dead, etc. so I haven't been > able to get much debugging information. I have tested on various different > physical systems, Xeon E5, Xeon E3, i7, and they all behave the same so it > doesn't seem like a system hardware issue. > > Disabling IOMMU makes it run for a little longer before crashing. > > The tiny bit of error information I have been able to get under various > conditions (eg. disabling ASPM, forcing D0, etc): > Test #1: > pcieport 0000:04:02.0: Unable to change power state from D3hot to D0, > device inaccessible Have you tried adding pcie_port_pm=off to the kernel command line? Thanks, Lukas
