Maintain a start position in CharStream instead of using repeated tailing.
#1223
| Job | Run time |
|---|---|
| 3m 11s | |
| 2m 13s | |
| 2m 3s | |
| 2m 53s | |
| 1m 56s | |
| 1m 21s | |
| 1m 44s | |
| 1m 26s | |
| 0s | |
| 16m 47s |