Xavier 10G pcie switch bandwidth is low，[ksoftirQD /0] load Is too high

Hi，

We use jetpack4.6 filesystem，Xavier PCIE_C4 connect a marvell 2lane gen3.0 pcie 10G switch, It seems to be working fine, but when iperf3 was used to test the bandwidth, it only reached 1 Gbps and [ksoftirQD /0] load rate is close to %100.

The pcie device tree is set to:

Linux_for_Tegra/source/public/hardware/nvidia/platform/t19x/galen/kernel-dts/common/tegra194-p2888-0000-a00.dtsi

pcie@14160000 {

status = “okay”;

	nvidia,pex-wake = <&tegra_main_gpio TEGRA194_MAIN_GPIO(L, 2)

				GPIO_ACTIVE_HIGH>;

    vddio-pex-ctl-supply = <&p2888_spmic_sd3>;

    nvidia,disable-aspm-states = <0xf>;

    nvidia,enable-power-down;

    nvidia,disable-clock-request;



    nvidia,max-speed = 
;

	num-lanes = 
;



    phys = <&p2u_8>,

           <&p2u_9>;



    phy-names = "pcie-p2u-0", "pcie-p2u-1";

};

Could you please give me some advice on how to solve this problem? Thank you!