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: 2008, 2008 R2, 2012, 2014, 2016, 2017

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


2 Answers


Occurs while the log writer task waits for work requests. Information from Microsoft®

This wait type is not a wait indicating I/O bottlenecks. It is only for waiting for other workers to request log block flushes – Alec Wood 2056 days ago

Used by the background worker "Log Writer" to wait on a queue for requests to flush log blocks to the transaction log.

Very rare

This wait never occurs for most instances

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

Prevalence of LOGMGR_QUEUE across the Spotlight Population

For 85 % of hours with this wait, average wait time is less than 490 ms

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

1152 instances contributed data to this chart

Latency Distribution of LOGMGR_QUEUE across the Spotlight Population