PERF: MultiIndex._engine use smaller dtypes #15387
| Job | Run time |
|---|---|
| 0s | |
| 18m 37s | |
| 17m 25s | |
| 33m 51s | |
| 31m 47s | |
| 44m 56s | |
| 30m 9s | |
| 15m 45s | |
| 14m 35s | |
| 17m 1s | |
| 19m 29s | |
| 34m 41s | |
| 40m 53s | |
| 31m 49s | |
| 29m 37s | |
| 42m 18s | |
| 38m 41s | |
| 24m 2s | |
| 5m 31s | |
| 23m 57s | |
| 16m 59s | |
| 19m 22s | |
| 41m 38s | |
| 37m 19s | |
| 23m 0s | |
| 7m 33s | |
| 11h 0m 55s |