Disable ConcurrentMergeScheduler's auto I/O throttling by default.
This is motivated by the fact that merges can hardly steal all I/O resources
from searches on modern NVMe drives. Merges are still not allowed to use all
CPU since they have a budget for the number of threads which is a fraction of
the number of threads that the host can run.
Disable ConcurrentMergeScheduler's auto I/O throttling by default.
This is motivated by the fact that merges can hardly steal all I/O resources from searches on modern NVMe drives. Merges are still not allowed to use all CPU since they have a budget for the number of threads which is a fraction of the number of threads that the host can run.
Closes #13193