Search sqlserver-dba.com
Follow sqlserver-dba.com
For any SQL Server issue send email to: jack@sqlserver-dba.com
SQLServer-DBA.com Links
Recent Posts
- SQL Server 2019 upgrade considerations
- How to use Database Compatibility to increase your migration success
- How to start SSMS as a different Windows login
- How to capture SQL login details with Extended Events
- How to add members to the Administrators group with Powershell
- How to view the current Powershell session security permissions
- How to get Active Directory Group Scope - Local Domain, Global Group, Universal Group with Powershell
- How to resolve a hostname or ip address with Powershell
- How can I execute t-sql with a Proxy account
- AWS-RDS SQL Server limitations
DIRTY_PAGE_POLL and how to avoid it
07 March,2014 by Tom Collins
Question: Is the DIRTY_PAGE_POLL wait type something to worry about? Since I’ve upgraded to SQL Server 2012 , I’ve noticed the DIRTY_PAGE_POLL consistently appearing at the top of the wait types.
Answer: The DIRTY_PAGE_POLL wait type is related to the Indirect Checkpoint feature. One of the Indirect Checkpoint benefits is to reduce IO spiking that is checkpoint-related by writing dirty pages continually to disk in the background.
By default, Indirect Checkpoint is not turned on , and requires an ALTER DATABASE statement to enable.
The interesting aspect of DIRTY_PAGE_POLL wait type , is it still appears as a wait type, even though Indirect Checkpoint is not enabled, as the background thread is waiting to poll for dirty pages.
In reporting the top wait types on a database server, I don’t include DIRTY_PAGE_POLL as it changes the top waits report without giving me a better understanding of SQL Server performance.
Read More
SQL Server Performance Killers
SQL Server Performance ,memory pressure and memory usage
SQL Server – Memory: Pages sec, memory pressure and thrashing
Author: Tom Collins (http://www.sqlserver-dba.com)
Share:
Verify your Comment
Previewing your Comment
This is only a preview. Your comment has not yet been posted.
As a final step before posting your comment, enter the letters and numbers you see in the image below. This prevents automated programs from posting comments.
Having trouble reading this image? View an alternate.
Posted by: |