Continuous profiling for Java - Upsun Developer

Upsun Continuous Profiler is powered by Blackfire. It is available directly from the Console, under Apps and Services → your app → Profiling. The Java continuous profiling is currently made across 3 dimensions:

CPU Time: Time spent running on the CPU
Allocations: Time spent running on the CPU
Allocated Memory: Number of bytes allocated

The default sampling frequency is 100 Hz. This means the Java continuous profiler is collecting information 100 times per second.

Prerequisites

Upsun Continuous Profiler requires Java >= 21.

Configuration

The Java continuous profiler is enabled by default without configuration.

Last modified on April 3, 2026