Description
When you test Intel® Open FPGA Stack v2.0.0 PCIe bandwidth, you may find the PCIe bandwidth performance degradation as below:
|
|
PCIe Server |
Read BW(GB/s) |
Write BW(GB/s) |
Read+Write(GB/s) |
|
IOFS V2.0.0 |
Gen4X16 |
~16 |
~16 |
~26 |
|
KPI numbers |
Gen4x16 |
~20 |
~20 |
~34 |
Resolution
This problem is fixed in Intel® Open FPGA Stack v2.1.0 and above.
You should upgrade your OFS version to v2.1.0 and above. What’s more, you should use the below commands to test the PCIe bandwidth:
host_exerciser --mode read --cls cl_4 --continuousmode true --contmodetime 10 lpbk
host_exerciser --mode write --cls cl_4 --continuousmode true --contmodetime 10 lpbk
host_exerciser --mode trput --cls cl_4 --continuousmode true --contmodetime 10 lpbk
