[zpl]

Hello, I encountered a problem while using it. I only installed the installation package for Windows Packet Filter and tested its speed using iperf3. It dropped directly from 10Gb to 2.5Gb. That’s right, I only installed the installation package and did not run any sample programs

[Vadim Smirnov]

This is probably related to Jumbo Frames. Some hardware can reach 10 Gbps only when Jumbo Frames are enabled, while the standard Windows Packet Filter driver build limits the maximum Ethernet frame size to 1514 bytes:

#ifdef JUMBO_FRAME_SUPPORTED
#define MAX_ETHER_FRAME 9014
#else
#define MAX_ETHER_FRAME 1514
#endif

So, even if no sample application is running, installing the standard driver may affect throughput on such hardware.

To enable Jumbo Frame support, the driver has to be rebuilt with JUMBO_FRAME_SUPPORTED defined.

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