The 5 Hidden Performance Gems of SQL Server 2014

Jun 21, 2015Download as PPTX, PDF1 like2,598 views

SQL Server 2014 comes with dozens of improvements in various areas. In this presentation we will discuss and see how the new release can make the life of each and every developer easier and what are the top 5 T-SQL enhancements that we can use in our day-to-day work.

Boris Hristov
SQL Server MVP, Speaker, Trainer, Blogger and DBA
The 5 Hidden Performance Gems
of SQL Server 2014

Gold sponsors
6/21/2015
|
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Platinum sponsor
6/21/2015
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A Atomic
Isolated
Consistent
Durable
C
I
D

Data pages are located in,
or read into, the buffer cache
and then modified
2
Modification is recorded
in transaction log on disk3
Later, checkpoint writes
dirty pages to database
4
Buffer Cache
Transaction’s lifecycle

Prior SQL Server 2014:
Serial Execution Plans
SQL Server 2014:
Parallel Execution Plans
Why don’t we speed up a bit?

Talk with the DBAs
to design a proper
disk and data layout!
You want that speed, right?

Why is the CE so important?
Why is the CE so important?

The CE
has not been
changed since
SQL Server 7.0
…and at the same time

Queries with Multiple
Predicates
Queries Joining Multiple
Tables
New Data Not Presented
in the Stats
Almost everywhere…
(this, oh btw, means you have
to test a lot!)
Where to expect changes?

Inline Index Definitions
(remember this one for later)

SQL Server 2012
SQL Server 2014
Remember this improvement

Numbers
0
…
8000
Partition 2
2501
…
4000
Partition 3
4001
…
8000
Why is partitioning both cool and not?
Partition 1
0
…
2500

In summary
Delayed Durability
Parallel SELECT INTO
Cardinality Estimator
Inline Index Creation
Partitioning Improvements
Testing is
important!

Resources you can use
Just a click
away!

Thank you!
Contacts:
brshristov@live.com
@BorisHristov
www.borishristov.com

This document provides information about an upcoming presentation on Columnstore Indexes in SQL Server 2014. It notes that the presentation will be recorded so that those who could not attend live can view it later. It requests that anyone with issues about being recorded should leave immediately, and remaining will be taken as consent to the recording. It also states the presentation will be free and will begin in 1 minute.

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The 5 Hidden Performance Gems of SQL Server 2014

1. Boris Hristov SQL Server MVP, Speaker, Trainer, Blogger and DBA The 5 Hidden Performance Gems of SQL Server 2014

2. Gold sponsors 6/21/2015 | Footer Goes Here2 |

3. Platinum sponsor 6/21/2015 | Footer Goes Here3 |

4. That’s not a Hekaton Talk!

5. So who am I? @BorisHristov So who am I?

6. things that can make your life better

7. Here’s how this will go… time

8. Delayed Durability

9. A Atomic Isolated Consistent Durable C I D

10. Data pages are located in, or read into, the buffer cache and then modified 2 Modification is recorded in transaction log on disk3 Later, checkpoint writes dirty pages to database 4 Buffer Cache Transaction’s lifecycle

11. Here’s the reason why it’s slow

12. Data pages are located in, or read into, the buffer cache and then modified 2 Modification is recorded in transaction log on disk3 Later, checkpoint writes dirty pages to database 4 Buffer Cache Transaction’s lifecycle

13. Yes, you can lose data!

14. DEMO Delayed Durability

15. SELECT INTO

16. Prior SQL Server 2014: Serial Execution Plans SQL Server 2014: Parallel Execution Plans Why don’t we speed up a bit?

17. Talk with the DBAs to design a proper disk and data layout! You want that speed, right?

18. DEMO SELECT INTO

19. Cardinality Estimator

20. Why is the CE so important? Why is the CE so important?

21. The CE has not been changed since SQL Server 7.0 …and at the same time

22. Queries with Multiple Predicates Queries Joining Multiple Tables New Data Not Presented in the Stats Almost everywhere… (this, oh btw, means you have to test a lot!) Where to expect changes?

23. DEMO Cardinality Estimator

24. Inline Index Definitions (remember this one for later)

25. SQL Server 2012 SQL Server 2014 Remember this improvement

26. DEMO Inline Index Definitions

27. Partitioning Improvements

28. Numbers 0 … 8000 Partition 2 2501 … 4000 Partition 3 4001 … 8000 Why is partitioning both cool and not? Partition 1 0 … 2500

29. DEMO Partitioning Improvements

30. Temporary Objects Caching

31. In summary Delayed Durability Parallel SELECT INTO Cardinality Estimator Inline Index Creation Partitioning Improvements Testing is important!

32. Resources you can use Just a click away!

33. Thank you! Contacts: [email protected] @BorisHristov www.borishristov.com

Editor's Notes

#13: Wouldn’t it be interesting if… 60 KB buffer -> flush Sp_flush_log Durable transaction – MSDTC or Cross database
#31: http://www.sqlpassion.at/archive/2013/06/27/improved-temp-table-caching-in-sql-server-2014/

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Editor's Notes