NTFS parallel flush threshold
Supported on: At least Windows Server 2016, Windows 10
Registry
HKLM
System\CurrentControlSet\Policies Options
NtfsParallelFlushThreshold decimal
- range 100-1000000 Description
When flushing modified file data from memory, NTFS chooses to use one or more threads based on how many files are currently open. This setting gives control over the open file threshold used to trigger parallel flush.