reduce the lock contention in task spawn. #8661
| Job | Run time |
|---|---|
| 1s | |
| 56s | |
| 35s | |
| 17s | |
| 32s | |
| 2s | |
| 1m 6s | |
| 36s | |
| 2m 40s | |
| 8m 38s | |
| 34s | |
| 7m 42s | |
| 34s | |
| 30s | |
| 6m 16s | |
| 5m 7s | |
| 30s | |
| 13m 1s | |
| 3m 29s | |
| 21m 23s | |
| 10m 52s | |
| 3m 8s | |
| 1m 0s | |
| 12m 18s | |
| 5m 27s | |
| 11m 6s | |
| 17m 12s | |
| 2m 36s | |
| 1m 14s | |
| 9m 56s | |
| 3m 9s | |
| 36s | |
| 3m 48s | |
| 4m 56s | |
| 1m 54s | |
| 1m 32s | |
| 2m 57s | |
| 38s | |
| 2m 44s | |
| 11m 50s | |
| 5m 40s | |
| 6m 3s | |
| 13m 24s | |
| 8m 16s | |
| 17m 22s | |
| 8m 6s | |
| 8m 8s | |
| 48s | |
| 7m 14s | |
| 1m 2s | |
| 6m 46s | |
| 3m 47s | |
| 23s | |
| 2s | |
| 4h 30m 23s |