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: Idle
SQL Server versions: 2005, 2008

This is an idle wait and so it can be safely ignored.


1 Answer


Occurs when a task is waiting for a background task to flush trace buffers to disk every four seconds. Information from Microsoft®

Very rare

This wait never occurs for most instances

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

Prevalence of SQLTRACE_BUFFER_FLUSH across the Spotlight Population

For 95 % of hours with this wait, average wait time is around 3.9 seconds

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

90 instances contributed data to this chart

Latency Distribution of SQLTRACE_BUFFER_FLUSH across the Spotlight Population