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, 2008 R2, 2012, 2014, 2016, 2017

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


2 Answers


Occurs when lazywriter tasks are suspended. This is a measure of the time spent by background tasks that are waiting. Do not consider this state when you are looking for user stalls. Information from Microsoft®


Used by the Lazywriter background worker to indicate it is sleeping waiting to wake up and check for work to do

Very rare

This wait never occurs for most instances

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

Prevalence of LAZYWRITER_SLEEP across the Spotlight Population

For 62 % of hours with this wait, average wait time is around 990 ms

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

1203 instances contributed data to this chart

Latency Distribution of LAZYWRITER_SLEEP across the Spotlight Population