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Load & Stress Testing

Through the effective use of automated load testing tools and methodologies, we can help minimize deployment risk by emulating expected user load conditions, analyzing performance problems, isolating application issues, and helping you take corrective actions in a timely manner.

QA Services : Load Test Center

Reliability is the key to customer loyalty . Downtime is costly and if your site can’t handle the traffic, your customers will click to one that can. VAssure’s load testing center solutions provide businesses with the confidence that their web sites will scale and perform under the heaviest workloads. A load test plan will be developed for your project outlining the testing objectives, approach, scope, test design architecture, and execution plans.

VAssure’s Load testing solution center provides expertise to use the latest in sophisticated performance testing tools to simulate tens of thousands of virtual users hitting your servers at once. These virtual users perform typical tasks such as browsing, purchasing items, and searching databases contained within your web site. While these virtual clients are performing these tasks, "probing clients" record exact server response times. We perform capacity testing to determine the maximum load that a web site can handle before failing. Capacity testing reveals your WebServer's ultimate limit.

During the load test , various performance measurements of the system under test are captured and documented. After the tests are performed, the resulting data to evaluate the performance of your site

Under normal Load - performance testing
Under anticipated future load - scalability testing
Under highly abnormal peak load - stress testing
Under uninterrupted , sustained load0 endurance testing

VAssure's load and stress testing services include testing the application for normal load, heavy load (stress), sudden increase in load (spike) and sustained load (endurance).

Test beds are set up and load, stress and endurance tests are executed to check if your application can meet your performance objectives before going live. Monitors are deployed on all components of the application under test. Scripts are written to extract vital data during these tests. This data is used to analyze how key parameters such as response times, CPU utilization, Hits per second (HPS) and throughput vary depending on the network traffic during different times of the day.

Root cause analysis is done by a team of experienced performance analysts to identify the performance bottlenecks. Recommendations are provided to clear these bottlenecks, often without any additional investments on existing infrastructure.

Our teams can Configure various workload types to test your web site under different load and stress conditions. This includes:

Load Test (Normal Workload) : This test measures the capability of your web site under anticipated production workload. It runs the load test for a constant number of virtual users (steady-state workload) until the given test duration time has passed.
Peak Test (Ramp-up and Ramp-down Workload) : Ramp-up test determines the peak load at which your web site fails to respond. It simulates heavy load by gradually increasing the number of users at defined periods until the count reaches the maximum number of users. Ramp-down test determines the limitations of your web site when the load is gradually dropped off at defined periods from a peak value to a lowest value. You can create load test cases with ramp-up and ramp-down to compare and determine how well your web site responds at peak hours of the system and when it goes back to an idle state.
Burn-In Test (Burn-in Workload) :This test helps you to identify issues in your web site when a heavy load is hit for an extended period of time. You can exit the test only based on the specified exit criteria.
Mixed Load Test : This test helps you to emulate the real-world load behavior. Assume your website experiences a normal load during early morning hours, peak load during the key business hours (say from 9.00 a.m. to 12:00 a.m.) and in the late evening, the user load will gradually slows down. To emulate this real-world load behavior, QEngine provides the Mixed Load type model. It allows you to add a combination of workload such as (SteadyLoad and Ramp-up) or (SteadyLoad, Ramp-up and Ramp-down) or (Ramp-down and Ramp-up). In this workload model, you can simulate a steady-state load (minimal users) for the first two hours, then simulate a heavy load in the next three hours to emulate the peak load generated in the key business hours and remain in the steady-state for few hours and then simulate the ramp-down load where users gradually decrease from a steady-state to a lowest value
Distributed Load Testing :To simulate a very high load hitting your web site, you have the option of simulating the users in a single machine with a high configuration or distribute the load across multiple machines using the distributed playback option. QEngine provides a single load test controller that centrally manages, automatically generates and distributes the load across multiple play engines



e-Testing is applicable to n-tier applications requiring inter-tier integration testing (such as UI, API, Databases) in addition to black box testing of each tier. We leverage our extensive experience in various web technologies like J2EE, Microsoft .NET to conduct comprehensive testing based on architectural blueprints and functional specifications.


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