Saturday, December 9, 2017

Performance Tuning in SQL Server: Top 4 Ways to Find Slow Queries - Part4

SQL performance tuning is a never ending battle. I’m not a DBA, but I am a developer who has pretended to be one for 15 years.  I have worked with SQL Server databases with terrabytes of RAM all the way down to Stackify’s massive fleet of little SQL Azure databases. I have seen a little bit of everything over the years.
In this article, I’m going to provide some tips for how developers can find slow SQL queries and do performance tuning in SQL Server.

4 Ways to Find Slow SQL Queries   
4. SQL Azure Query Performance Insights
I am going to assume that SQL Azure’s performance reporting is built on top of Extended Events. Within the Azure Portal you can get access to a wide array of performance reporting and optimization tips that are very helpful.
Note: These reporting capabilities are only available for databases hosted on SQL Azure.
In the screenshot below you can see how SQL Azure makes it easy to use your queries that use the most CPU, Data IO, and Log IO. It is has some great basic reporting built into it.

You can also select an individual query and get more details to help with SQL performance tuning.

Pros: Great basic reporting.
Cons: Only works on Azure. No reporting across multiple databases.
Next time you need to do some performance tuning with SQL Server, you will have a few options at your disposal to consider. Odds are, you will use more than one of these tools depending on what you are trying to accomplish.

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