Maintain a start position in CharStream instead of using repeated tailing.
#1225
| Job | Run time |
|---|---|
| 2m 25s | |
| 1m 51s | |
| 2m 57s | |
| 2m 17s | |
| 58s | |
| 2m 52s | |
| 1m 20s | |
| 1m 26s | |
| -1s | |
| 16m 5s |