Load Impact

On-demand automated load testing

Features and Benefits

Realistic Simulated Users

We simulate traffic exactly how it would happen in real life. No hidden caching or romanticized user behavior. Our Virtual Users (VUs): Use multiple concurrent TCP connections when loading resources from a single target host; Can ramp-up from 0 to 100,000 users in under a minute; Can emulate a range of browsers such as IE, Firefox, Chrome, Safari and Opera; Use DNS just like real clients (cache according to TTL, etc.); Extensive HTTP support including redirect behavior, custom headers, all verbs, cookie handling, compression handling, etc.

Simulated users on Load Impact

Large-Scale Load Tests

Up to 1.2 million simulated users in a single test. Ramp-up from 0 to 100,000 users in under a minute.

Large scale load tests with Load Impact

We’ve executed large load tests - up to 1.2 million concurrent users - for some of the biggest and well known brands in media, telecom and e-commerce. If you’re expecting an insane amount of traffic, we can generate an insane amount of load!

Test Scheduling and Automation

Configure your load tests to run in the middle of the night or once per week. Include Load Impact as part of your Continuous Delivery process with the use of our Jenkins and TeamCity plugins, as well as our open API and various SDKs.

Test scheduling and automation with Load Impact

Simultaneous Multi-Geo Load Generation

In a single test, generate load from up to 10 different locations simultaneously and evaluate load times for different regions. Powered by Rackspace and Amazon Web Services.

Simultaneous multi-geo load generation with Load Impact

We currently have load generators in the following 12 regions: - Ashburn, Virginia - Palo Alto, California - Portland, Oregon - Chicago, Illinois - Dallas, Texas - Dublin, Ireland - Singapore, Singapore - Tokyo, Japan - Sao Paulo, Brazil - Sidney, Australia - London, UK

Free Session Recorders (Chrome Extension or proxy)

Record an HTTP session using our proxy recorder or our Chrome Extension and let the simulated users perform the same actions during the test. Add up to 10 different user scenarios in a single test and get individual measurements for each type.

Free session recorders with Load Impact

Automatic and Advanced Scripting

Script user scenarios in Lua, using our IDE with code completion, JSON and XML parsing, data parameterization and more. Or analyze a web page and generate a load script automatically - no programming required.

Automatic and advanced scripting with Load Impact

Server Monitoring (Server Metrics Agents)

Install our Server Metric Agents on your machines and collect backend information from the system being tested, such as: - CPU usage - Memory usage - Disk I/O - Network I/O - Plus any custom metrics available via Nagios plugins

Server monitoring with Load Impact

Partial list of supported operating systems

Windows, Mac OSX, Linux, Solaris, FreeBSD

Partial list of supported database servers

MySQL, MariaDB, PostgreSQL, SQLServer, Oracle, BD2, Subase, Greenplum, Cassandra, HBase, MongoDB, Riak

Partial list of supported application servers

Microsoft.NET, Oracle Application Server, JBoss, Tomcat, WebLogic, JOnAS, SAP NetWeaver, Kaazing, JMX Servers, GlassFish, Adobe LiveCycle

Partial list of supported web servers

Apache, Nginx, IIS, Jetty

Powerful Reporting

Generate reports with multiple charts containing multiple measurement metrics for easy correlation.

Powerful reporting with Load Impact

Extremely Accessible Service

Instant, on-demand and self-service load testing. No waiting to get access, no downloads or installations and no long-term licensing fees required.

Extremely accessible service with Load Impact

Real-Time Testing

Watch and control your load test in real time. View results as they are coming in, live. Your graphs are updated dynamically throughout the load test.

Real-time testing with Load Impact

Mobile Client and Network Emulation

Quickly create a load test which simulates different mobile network conditions - such as 3G, 4G, Edge, etc - and easily record mobile user scenarios using our hosted proxy recorder.

 Mobile client and network emulation

  • Network latency emuation
  • Network speed emulation
  • Client connections emulation
  • Jitter and packet loss emulation