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: Other
SQL Server versions: 2012, 2014, 2016, 2017


Very rare

This wait never occurs for most instances

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

Prevalence of MD_LAZYCACHE_RWLOCK across the Spotlight Population

For 13 % of hours with this wait, average wait time is around 3.2 ms

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

120 instances contributed data to this chart

Latency Distribution of MD_LAZYCACHE_RWLOCK across the Spotlight Population