Note Indexing Service is no longer supported as of Windows XP and is unavailable for use as of Windows 8. Instead, use Windows Search for client side search and Microsoft Search Server Express for server side search.
The MaxWordlistIo entry specifies the system I/O threshold above which indexing (word-list creation) is delayed.
|Default:||410 (approximately 2 MB in 5 seconds)|
|Range:||100 - 4294967295 (0xFFFFFFFF)|
The value of the MaxWordlistIo entry provides one method of fine-tuning Indexing Service. Checking the I/O usage by the system is one of the ways Indexing Service limits its resource use so that it can remain an unobtrusive process.
When the disk-performance counters are enabled in the DISKPERF.exe process, the value of the MaxWordlistIoDiskPerf entry is used instead of the value of this entry.
Build date: 9/10/2012