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Performance Tuning

How to Persist Information from Lightweight Query Profiling?

September 14, 2020

Accessing runtime information of a query execution plan is vital to get a precise understanding of resource usage, execution patterns to resolve performance issues. Runtime statistics is beneficial while debugging query performance issues, such as long-running queries, and queries that run indefinitely and never finishes. Historically query completion was a prerequisite for the availability of […]

SSMS Memory Grant Info

May 11, 2020

Over some time, SQL Server Management Studio has expanded memory grant information. Memory grant provides memory grant estimate as well as actual runtime memory grant information. In this blog post, I will explain each element of ‘Memory Grant Info’, so we can get a better understanding of what those numbers mean? I am using this […]

Ring Buffer Monitoring CPU – What do those values mean?

February 24, 2020

Here is a sample output of XML from sys.dm_os_ring_buffers where WHERE ring_buffer_type = N’RING_BUFFER_SCHEDULER_MONITOR’. What do those XML elements mean? In order to monitor CPU usages, you need to understand what each element means so you can use the values. I will explain each one in this blog post. ProcessUtilization Indicates the amount of CPU SQL […]

Did My UDF Inlined?

December 30, 2019

With the release of SQL Server 2019, CTP 2.1 new features were added to Intelligent Query Processing (QP) feature family. One of those features was Scalar UDF Inlining. You can read about the announcement by Karthik Ramachandra from Microsoft in this blog post. Karthik explained why UDFs are a problem when inlining is not done. Another […]

UDFs CPU and Elapsed Time

December 23, 2019

Microsoft SQL Server Management Studio (SSMS) version 17.5 added new showplan attributes UdfCpuTime and UdfElapsedTime to QueryTimeStats. These two attributes will measure the time and CPU spent on user-defined functions within a query execution hence helping to discover the impact of UDF execution within full query execution. This feature was first added in SQL Server […]


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New features in Management Studio -- Performance Troubleshooting made ... easier!

https://www.sqlsaturday.com/1016/en-us/Sessions/Details/sid/108130

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Who knew one day I ... will be speaking at #sqlsatSaoPaulo
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Republicans didn’t want the #TrumpUniversity deposition getting out. I guess this really is the video they don’t ... want you to watch and retweet. So let’s all watch and retweet! 😲

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