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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.

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Prerequisites

Upsun Continuous Profiler requires Java >= 17.

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Configuration

The Java continuous profiler is enabled by default without configuration.
Last modified on March 12, 2026