1. Optimizing SQL Server Performance in a Virtual Environment
2/18/ :54 PM
DBI317
Optimizing SQL Server Performance in a Virtual Environment
Denny Cherry
Independent Consultant
© 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista 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.
Denny
Cherry
@mrdenny

3. Topics of Discussion Diagnosing Performance Problems
Balloon Memory Drivers
Memory Deduplication Options
Storage Configuration Options

4. Diagnosing Performance Problems
Check Host and Guest CPU numbers
Check Host for CPU thrashing
Check Host and Guest for Disk IO latency

5. Balloon Memory Drivers
Used by host OS to request memory back from the guest OS
Prevents host of from paging physical memory to the hosts swap file
Should be enabled
Lock pages in memory should be disabled, unless enabled for a specific reason

6. Memory Reservations Forces the memory to be available for the guest
Recommended that it be set to a portion of the allocated memory

7. Memory Reservations Forces the memory to be available for the guest
Recommended that it be set to a portion of the allocated memory

8. Memory Deduplication Options
Great for OS memory
Doesn’t work at all for SQL Server
Unless… multiple SQL Servers have the same pages in cache

9. Storage Configuration Options
IO is the same if the disks are physical or virtual
Use automatic tier adjusting technology if possible
Keep OS, data, logs, tempdb on separate disks if possible

10. Storage Deduplication
Can greatly improve overall performance
By deduplicating OS virtual disks, we save much less data to the array
As less data is written to the array, less OS data is loaded into cache on the array

11. Monitor, Monitor, Monitor
Did I mention that you need to monitor
Watch all levels of the environment
SQL Server
Guest
Hypervisor
Host
Storage

12. Related Content
Breakout Sessions (VIR401, VIR308, VIR 309, DBI313, DBI312)
Hands-on Labs (DBI12-HOL, DBI11-HOL)
Product Demo Stations (demo station title and location)
MCSE SQL Server 2012
Find Me Later At the SQL Server Booth

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16. 2/18/ :54 PM
© 2012 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista 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.
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista 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.

17. 2/18/ :54 PM
© 2009 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista 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.