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High Performance SQL Server: Consistent Response for Mission-Critical Applications
book

High Performance SQL Server: Consistent Response for Mission-Critical Applications

by Benjamin Nevarez
January 2021
Intermediate to advanced
406 pages
9h 20m
English
Apress
Content preview from High Performance SQL Server: Consistent Response for Mission-Critical Applications
© Benjamin Nevarez 2021
B. NevarezHigh Performance SQL Serverhttps://doi.org/10.1007/978-1-4842-6491-1_5

5. Analyzing Wait Statistics

Benjamin Nevarez1  
(1)
Santa Clarita, CA, USA
 

One of my main recommendations for troubleshooting a performance problem when a particular issue is lacking information is to run a SQL trace or extended event session to find out the most expensive queries. This method will usually show us the most expensive queries based on one or more metrics including duration, CPU usage, logical and physical reads, writes, rows, and so on. Many times the metric of choice is duration, or how long the query took to execute. We usually assume this entire duration is usable work, which of course can be optimized. In a lot of cases, this ...

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Publisher Resources

ISBN: 9781484264911