Implementing Quantitative and Timed Load‑Testing Modes in a Java Performance Framework

The previous post introduced the multithreaded base class and executor for the performance testing framework; this installment focuses on two load‑testing modes. The quantitative mode runs a fixed number of iterations per thread, while the timed mode runs each thread for a predetermined duration. Both are implemented as virtual classes extending ThreadBase, allowing easy task management and parameter customization.

Quantitative Mode Implementation

The class ThreadLimitTimesCount<T> limits each thread to a specific number of executions. Key fields include times (iteration count), key (global stop flag), and collections for timing marks. The run() method records start time, loops times times, captures execution duration, logs errors, and aggregates results in Concurrent.allTimes and Concurrent.requestMark. Helper methods before(), status(), and after() manage the stop flag, error threshold, and resource cleanup.

Timed Mode Implementation

The class ThreadLimitTimeCount<T> runs until a configured time limit expires. It stores the limit in time (milliseconds) and uses a while(true) loop that breaks when the elapsed time exceeds the limit, an error threshold is reached, or the global stop flag is set. Timing data and marks are collected similarly to the quantitative mode.

Common Features

Both classes share a static logger, a list of marks, and a global key to allow early termination.

The stopAllThread() static method sets key = true to stop all running threads.

Each run() method logs execution count, error count, and total duration, then adds per‑iteration timings to Concurrent.allTimes and request marks to Concurrent.requestMark.

Usage Notes

Quantitative mode offers easier task management and parameter customization but may have larger measurement error; extending the iteration count can mitigate this. Timed mode provides more precise duration control but requires careful handling of the time‑checking loop.

All source code is available at the following repository:

gitee address: https://gitee.com/fanapi/tester

Note: The framework is intended for internal testing purposes; redistribution without permission is prohibited.