1. TechEd 2013
6/24/2018 8:28 PM
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

2. Query Performance Tuning in Windows Azure SQL DB
6/24/2018 8:28 PM
DBI-B337
Query Performance Tuning in Windows Azure SQL DB
Scott Klein, Grant Fritchey
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

3. Goals
Explain the importance of query tuning within the Azure SQL Database environment.
Show how the hybrid tool set can be used to identify poor performance.
Demonstrate the additional functionality available within the Database Management Portal interface.

4. Get in touch
Grant Fritchey
scarydba.com
@gfritchey

5. Scott Klein

6. Why Tune Queries?

7. Why Tune Queries? You have no control over:
Where your queries run
How many resources your query uses
How many CPUs/Disks are dedicated to you
When the server is just going to go away
Most performance problems are code or structure related
One query runs many places

8. Then Why Use SQL Database?
Extremely low management cost
Speed of delivery
Cheap prices
Expandable capacity

9. What’s Old is New Transactions as short as possible Tune the queries
Only move the data you need to move
Only move the data when you need to move it
Tune the queries

10. Connectivity

11. Coding for Retries WASD Errors General Errors Loss of Connection
TechEd 2013
6/24/2018 8:28 PM
Coding for Retries
WASD Errors
General Errors
Loss of Connection
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

12. Checking on Throttling
Master Database
Sys.event_log
Sys.database_connection_stats

13. Throttling
Scott Klein, Grant Fritchey

14. Tools

15. Tools for Query Tuning SQL Server Management Studio
Query Tuning Tools
SQL Server Management Studio
SQL Database Management Portal
Dynamic Management Objects

16. SQL Server Management Studio
Connectivity required
Statistics IO
Object Explorer
Statistics Time
Query window
And not much else
Execution Plans

17. SSMS
Scott Klein, Grant Fritchey

18. SQL Database Management Portal
Monitor
Statistics Time
Query window
Execution Plan
Statistics IO

19. Portal: Monitor Connection Activity Query Performance Cache dependent
Including throttled connections
Query Performance
Aggregation
Details
Cache dependent

20. Portal: Monitor
Scott Klein, Grant Fritchey

21. Portal: Query Window Roughly same as SSMS query window No properties
No drag & drop for object names
No code completion
No properties
SET STATISTICS IO/TIME ON/OFF
Execution plans
Actual
Estimated

22. Portal: Query Window
Scott Klein, Grant Fritchey

23. Portal: Execution Plans
Graphical
Can be saved
Properties
Highlighting

24. Portal: Execution Plans
Scott Klein, Grant Fritchey

25. DMO Differences Reset on database move
Not reboot, restart, attach, detach, etc.
Operating system information is gone
No clickable execution plans

26. Wait State Monitoring sys.dm_exec_requests does show waits
sys.dm_db_wait_stats
Special wait types
SE_REPL_SLOW_SECONDARY_THROTTLE
SE_REPL_COMMIT_ACK
Expected wait types
RESOURCE_SEMAPHORE
*IO_LATCH
SOS_SCHEDULER_YIELD

27. Wait State Monitoring
Scott Klein, Grant Fritchey

28. Query DMOs Sys.dm_exec_requests Sys.dm_exec_query_stats
Sys.dm_exec_sql_text
Sys.dm_exec_query_plan
Sys.dm_exec_query_plan_text

29. Query DMOs
Scott Klein, Grant Fritchey

30. Index DMOs Sys.dm_db_index_operational_stats
Sys.dm_db_index_physical_stats
Sys.dm_db_index_usage_stats

31. Index DMOs
Scott Klein, Grant Fritchey

32. Conclusion

33. Goals
Explain the importance of query tuning within the Azure SQL Database environment.
Show how the hybrid tool set can be used to identify poor performance.
Demonstrate the additional functionality available within the Database Management Portal interface.

34. Resources Scarydba.com/resources
SQL Server 2012 Query Performance Tuning by Grant Fritchey
Performance Tuning with SQL Server Dynamic Management Views by Louis Davidson and Tim Ford
Windows Azure SQL Database and SQL Server – Performance and Scalability Compared and Contrasted

35. Get in touch
Grant Fritchey
scarydba.com
@gfritchey

36. Scott Klein

37. Download Data Explorer
Track Resources
Download Data Explorer
SQL Server Website
Hands-On Labs
@sqlserver
Download Geoflow
mva
Microsoft Virtual Academy
Get Certified!
Windows Azure

38. Resources Learning TechNet msdn http://channel9.msdn.com/Events/TechEd
6/24/2018 8:28 PM
Resources
Learning
Sessions on Demand
Microsoft Certification & Training Resources
TechNet
msdn
Resources for IT Professionals
Resources for Developers
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

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6/24/2018 8:28 PM
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© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

40. 6/24/2018 8:28 PM
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© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.

41. 6/24/2018 8:28 PM
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries.
The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
© 2013 Microsoft Corporation. All rights reserved. Microsoft, Windows, and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.