test: Make criterion calculate transfer benchmark throughputs
#1869
| Job | Run time |
|---|---|
| 7m 19s | |
| 7m 21s | |
| 7m 10s | |
| 6m 24s | |
| 6m 38s | |
| 6m 28s | |
| 16m 17s | |
| 16m 40s | |
| 16m 50s | |
| 8m 53s | |
| 6m 22s | |
| 1h 46m 22s |