Feeling bold?
Ask A Bot
Product
API
Changelog
Sign In

Set Up Performance

With performance monitoring, Sentry tracks your software performance, measuring metrics like throughput and latency, and displaying the impact of errors across multiple systems. Sentry captures distributed traces consisting of transactions and spans, which measure individual services and individual operations within those services. Learn more about our model in Distributed Tracing.

Configure the Sample Rate

First, enable

tracingThe process of logging the events that took place during a request, often across multiple services.
and configure the sampling rate for transactions. Set the sample rate for your transactions by either:

  • Setting a uniform sample rate for all transactions using the tracesSampleRate option in your SDK config to a number between 0 and 1. (For example, to send 20% of transactions, set tracesSampleRate to 0.2.)
  • Controlling the sample rate based on the transaction itself and the context in which it's captured, by providing a function to the tracesSampler config option.

The two options are meant to be mutually exclusive. If you set both, tracesSampler will take precedence.

Performance Monitoring is available for the Sentry Java SDK version ≥ 4.0.

Copied
import io.sentry.Sentry;

Sentry.init(options -> {
  options.setDsn("https://examplePublicKey@o0.ingest.sentry.io/0");
  // To set a uniform sample rate
  options.setTracesSampleRate(1.0);
  // OR if you prefer, determine traces sample rate based on the sampling context
  options.setTracesSampler(
      context -> {
        // return a number between 0 and 1 or null (to fallback to configured value)
      });
});

Learn more about how the options work in Sampling Transactions.

Verify

Test out

tracingThe process of logging the events that took place during a request, often across multiple services.
by starting and finishing a transaction, which you must do so transactions can be sent to Sentry. Learn how in our Custom Instrumentation content.

While you're testing, set tracesSampleRate to 1.0, as that ensures that every transaction will be sent to Sentry.

Once testing is complete, you may want to set a lower tracesSampleRate value, or switch to using tracesSampler to selectively sample and filter your transactions, based on contextual data.

Next Steps:

Help improve this content
Our documentation is open source and available on GitHub. Your contributions are welcome, whether fixing a typo (drat!) to suggesting an update ("yeah, this would be better").
Suggest an edit to this page   |  Contribute to Docs   |  Report a problem
Package:
maven:io.sentry:sentry
Version:
6.30.0
Repository:
https://github.com/getsentry/sentry-java