On 2/10/22 08:04, Yanjun Zhu wrote: > > Thanks, I have also reached the big bandwidth with the same methods. > How about latency of soft roce? > > Zhu Yanjun In loopback on my system with ib_write_lat I see the following. It isn't very exciting. The use case I am interested in doesn't require super low latency though. #bytes #iterations t_min[usec] t_max[usec] t_typical[usec] t_avg[usec] t_stdev[usec] 99% percentile[usec] 99.9% percentile[usec] 2 1000 1.57 9.65 1.84 2.04 0.69 5.02 9.65 4 1000 1.58 7.89 1.82 1.99 0.54 4.68 7.89 8 1000 1.60 6.86 1.79 1.95 0.51 4.08 6.86 16 1000 1.59 5.28 1.83 1.95 0.42 3.72 5.28 32 1000 1.64 8.18 1.84 1.99 0.52 4.07 8.18 64 1000 1.65 8.58 1.84 1.99 0.48 3.92 8.58 128 1000 1.80 10.58 1.96 2.10 0.47 3.94 10.58 256 1000 1.76 12.54 2.00 2.17 0.52 4.00 12.54 512 1000 1.69 11.09 1.95 2.21 0.66 3.97 11.09 1024 1000 1.80 12.91 2.00 2.22 0.56 3.89 12.91 2048 1000 2.04 9.29 2.20 2.37 0.50 4.03 9.29 4096 1000 2.39 11.66 2.58 2.76 0.56 4.67 11.66
