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Using an Analysis of Response Time for SQL Performance Tuning
The most current approach for improving applications and the performance of SQL is by helping DBAs monitor their database with the most important data: the ability to understand what causes end users to experience wait time. Also referred to as wait time analysis, it allows IT teams to align their SQL performance tuning efforts with service level delivery for end users.
Explore some of the benefits of SQL performance tuning.
Response time methods offer a break from the traditional practice of watching server health data and hypothesizing about its impact on performance since wait time analysis measures the time it takes to complete and action. These implementations, when used to their fullest, separate information into measurable steps and can help point out where the application is facing delays. It stands to reason that because the database is solely responsible for responding to users requests that response time is a key indicator of what time of performance tuning should be done.
Conventional vs. Differences
Health measures and execution ratios are the main focus of normal SQL performance tools. While this has been the traditional way of measuring in the past, the end user experience is left out of the equation and consequently, it is more difficult to pinpoint where the error first occurred. These traditional methods could show whether an application took place millions of time but could not provide any insight as to whether these applications had been the cause of any type of delay.
Understanding the difference between Response Time Analysis and Conventional Analysis
- Measure response time for an action to take place, from receipt of request to beginning of response.
- Every SQL query is measured separately so that the response time can be looked at individually. This is far more useful than looking at the total response time for issue identification.
- Each small step in the entire SQL query is measured. Treating the instance as a black-box without seeing where the time is consumed internally does not help problem solving.
See how SQL server tuning can help.
Getting Your SQL Server Tuning Done Right
DBAs are able to find the exact location of a problem with response time analysis. This means that preventative action can be taken before wait time affects end-user service levels and further SQL Server tuning complications.