Migrate host_task object management to a thread pool based approach
#6505
| Job | Run time |
|---|---|
| 5m 15s | |
| 6m 50s | |
| 5m 21s | |
| 5m 58s | |
| 8m 34s | |
| 8m 48s | |
| 5m 45s | |
| 4m 23s | |
| 5m 33s | |
| 7m 59s | |
| 8m 11s | |
| 9m 2s | |
| 4m 54s | |
| 5m 5s | |
| 2m 18s | |
| 2m 22s | |
| 2m 31s | |
| 2m 11s | |
| 2m 27s | |
| 3m 9s | |
| 4m 43s | |
| 3m 48s | |
| 3m 22s | |
| 3m 50s | |
| 3m 42s | |
| 3m 38s | |
| 0s | |
| 0s | |
| 0s | |
| 2h 9m 39s |