SQL Server 2016Performance Tricks You Need to Know

Pinal Davehttp://blog.sqlauthority.com

Agenda

Preventive Measures

Getting Started with Waits

Practical Performance Issues

Resources3

12

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1

Common Performance Problems

Slow Application Response TimeFrequent TimeoutsIntermediate Performance ProblemsData & Workload Growth

No One Wants Slow Running Application

Real World Scenario

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SQL Server 2012

Slow Applica

tion

Our application is running slow.

Would you please fix it?

We did everything possible to

improve performance.

What next?

Sure, Boss!

We should upgrade to SQL Server 2014 or SQL Server 2016

Why?

Long Running Query

Q: What is the first thing comes to your mind when you see a query running for a long time?

Please, Help me!

Demo

Now let’s upgrade to

latest version

Why?Do queries

run faster on latest

version?

Query Runs Faster in Latest Versions

Q: Why do some queries runs faster in the latest version of SQL Server?

What is your answer based

on demo?

What we have seen so far…

Higher Compatibility Level +

Latest Cardinality Estimation =

Better Performance

Cardinality Estimation

• Predicts rows your query likely to return• Helps query optimizer to generate the

optimal plan

• Latest CE is more accurate• Latest CE More Optimal Query Plan

Latest CE is a good thing

Compatibility Level

• Provides partial backward compatibility

• SS 2016 onwards new features are tied with new compatibility level

• Compatibility level includes many features including cardinality estimation

Latest CL is the most efficient

Demo

• Latest compatibility level offers the best performance

Great learning so far! Sure

I wish he considers my promotion as

well

Let us differ it to next review cycle

What about my promotion?

Whhaaaat…?

I knew it!

Demo

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Resources

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