readme

It's a simple cpp to grab infiniband port_xmit_data file and measure the diff, validated with qperf on xi shi yi gou.
easy to build, only need ibpq.cc and date.h. Then do: g++ -Wall -g -std=c++11 -O0 ibpq.cc -o run.

helper date.h

I followed this SOPHow to convert std::chrono::time_point to calendar datetime string with fractional seconds?

Baseline using `qperf`

in server node: qperf start server.
then in client node: qperf 192.168.1.11 rc_rdma_read_bw rc_rdma_read_lat rc_rdma_write_bw rc_rdma_write_lat rc_rdma_write_poll_lat uc_rdma_write_bw uc_rdma_write_lat uc_rdma_write_poll_lat (change 192.168.1.11 to server node ip)