1. Waitopedia
  2. WRITELOG

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.

WRITELOG

Category: Log
SQL Server versions: 2000, 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017

What is WRITELOG?

1 Answer

 

Occurs while waiting for a log flush to complete. Common operations that cause log flushes are checkpoints and transaction commits. Information from Microsoft®
Very common

This wait is very common for most instances

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

Prevalence of WRITELOG across the Spotlight Population

For 24 % of hours with this wait, average wait time is around 0.49 ms

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

4190 instances contributed data to this chart

Latency Distribution of WRITELOG across the Spotlight Population