Refactor: split timer::tick() to timer::start() and `timer::end()…
#589
| Job | Run time |
|---|---|
| 22m 33s | |
| 8m 53s | |
| 18m 56s | |
| 8m 3s | |
| 6m 53s | |
| 5m 30s | |
| 4m 12s | |
| 9m 34s | |
| 15m 54s | |
| 1h 40m 28s |