I have a big problem with the new Jetpack 4.2.1 including the kernel 4.9 on a Jetson TX2.
I´m running a Xilinx FPGA over PCIe with a Xilinx PCIe Driver (https://www.xilinx.com/support/answers/65444.html). With Jetpack 3.2.1 (Kernel 4.4) everything is good!
But with the new Jetpack 4.2.1 (Kernel 4.9) i have a big network performance issue while running my application using the PCIe Driver. With iperf i get a result of 50-100 MBit. When i stop my application the iperf result is about 950 MBit.
With the JetPack 3.2.1 (Kernel 4.4) i have no network performance problems. Everytime my iperf result is about 950 MBit.
I tried to compare the 4.4 and 4.9 kernel config. But there are so many changes that i don´t know what´s the problem.
Is there somebody who can help me or give me a hint?