Waitopedia is a comprehensive resource of information about SQL Server waits.

The description shown below is the top answer as voted by the Spotlight community.

The charts are based on 2.1 TB of data collected from 4207 instances uploaded by 323 Spotlight users over an 8 week period.


Category: Network
SQL Server versions: 2008, 2008 R2, 2012, 2014, 2016, 2017


1 Answer


Occurs when there is a wait for all tasks to finish during a NUMA node state change. Information from Microsoft®

Very rare

This wait never occurs for most instances

For each of 4207 instances, we ranked SNI_TASK_COMPLETION on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.

Prevalence of SNI_TASK_COMPLETION across the Spotlight Population

For 100 % of hours with this wait, average wait time is above 1 ms

For each instance, we found all the recent hours when it had a SNI_TASK_COMPLETION wait. We found the average latency for each of those hours.

1 instance contributed data to this chart

Latency Distribution of SNI_TASK_COMPLETION across the Spotlight Population