Identification of Performance Objectives / Goals
- Do you want to know if the application is able to support X number of concurrent users load?
- How yours most important transactions and pages performing in terms of response time during normal load and peak load?
- Would you like to know if X number of transactions can be completed in Y number of minutes?
- Is new version of the software adversely affecting response time (create performance baseline)?
- Among all key transactions and pages/screens, which are the top 5 slowest transactions and pages that can be considered for optimization for next release?
- Do you want to know if response time of all important transactions and pages are less than X sec?
- Do you want to know size of web page / screen or the number of objects on the page impacting performance for end users? If yes, then which objects are the affecting it most and what are the alternatives?
- Do you want to know If yours most important transactions and pages are reliable (error rates less than 5%) during normal load and peak load?
- Are you worried that yours most important transactions and pages / screens are not available to customers during peak load time?
- If performance (response time and error percentage) of yours most important transactions and pages / screens might degrades after application is up and running for a longer duration (say 8 hrs?)
- Would you like to know after application get stressed out it comes to normal state by itself when no requests are coming?
- At what point does the performance degradation occur?
- Would you like to know how many concurrent users and transactions per second will crash the system?
- Would you like to know the performance behavior of application during spike (all concurrent users get ramp up in very less time)?
- Do you want to measure resource utilization like memory, cpu, disk i/o and network i/o of servers (web server, application server and database server) during normal and peak load?
- Would you like to know if application server has memory leak?
- Would you like to know what parts of the system perform poorly and under what conditions?
- Would you like to know which configuration (Garbage collection, Connection Pool, Thread pool etc.) provides the best performance?
- Would you like to find out the recommended configuration for iis server and database servers for peak load traffic?
- Would you like to know how many transactions / sec (throughput) being handled by different servers during the peak load?
- What kinds of errors are generated on application server during peak load?
- Would you like to know where the threads are waiting in application server when response is very slow?
- Would you like to know what is being processed when performance of the application is found to be slow?
- Would you like to know what code snippet is slowest during peak load on application server?
- Would you like to know top X slowest SQL queries during the peak load?
- Would you like to know the root cause of performance degradation?
- Would you like to know the performance of most important transactions and pages at various database size?
- Would you like to know which layer is performing slow?
- Do you want to know when there is a time to put better hardware or additional hardware to satisfy the future user base and its load?
- Would you like to determine if application is capable of handling future growth?
- Would you like to stress every web method separately and create a baseline?
- Would you like to conduct stress testing of database stored procedures?
- Would you like to know how cache is being utilized on different servers?
- Would you like to know the performance behavior of application during various connections behavior (persistent, retrying etc.)?
- Would you like to know the performance behavior of application when all users abandon the site without logging out?
- Would you like to know performance behavior of application when accessed from different locations?
- Would you like to know performance behavior of application when accessed from different network bandwidth (home users, office users, etc.)?
- Which types of users (home, administrator, business etc.) are affected most during peak load?
- Would you like to know the performance (response time) of page for usable components only or full page load?
- Would you like to know which request (among thousands) has taken maximum time and its breakdown?
- Do you want to know are there any third party providers such as rating, reviews, ads, news feeds, e-commerce engines and CDN hurting the performance?
- Would you like to reproduce some performance issues in the system? What would be that?
- Do you have some specific performance issue that you want to solve? What would be that?
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