| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/performancecopilot/speed/v4 | Package speed implements a golang client for the Performance Co-Pilot instrumentation API. |
| log | Package log implements a simple logging package. |
| math/rand | Package rand implements pseudo-random number generators suitable for tasks such as simulation, but it should not be used for security-sensitive work. |
| time | Package time provides functionality for measuring and displaying time. |