Use microsecond timestamps and add serial dump_file support #3090
| Job | Run time |
|---|---|
| 15s | |
| 16m 49s | |
| 15m 22s | |
| 1m 36s | |
| 15m 17s | |
| 14m 36s | |
| 13m 45s | |
| 13m 26s | |
| 11m 35s | |
| 2m 19s | |
| 1m 57s | |
| 1m 55s | |
| 1m 46s | |
| 14m 19s | |
| 14m 5s | |
| 2m 7s | |
| 13m 36s | |
| 16m 16s | |
| 1m 38s | |
| 1m 52s | |
| 13m 42s | |
| 15m 33s | |
| 16m 7s | |
| 14m 0s | |
| 14m 11s | |
| 1m 25s | |
| 15m 54s | |
| 12m 27s | |
| 18m 35s | |
| 3m 20s | |
| 4h 59m 45s |