@pyroscope/flamegraph

Pyroscope Flamegraph

This is a component which allows for you to render flamegraphs in your website or application. While this is typically used for profiling data this can also be used to render tracing data as well

Rendering Profiling Data

Import the CSS

import '@pyroscope/flamegraph/dist/index.css';

Import the FlamegraphRenderer component

import { FlamegraphRenderer, Box } from '@pyroscope/flamegraph';

const SimpleTree = {
  version: 1,
  flamebearer: {
    names: [
      'total',
      'runtime.mcall',
      'runtime.park_m',
      'runtime.schedule',
      'runtime.resetspinning',
      'runtime.wakep',
      'runtime.startm',
      'runtime.notewakeup',
      'runtime.semawakeup',
      'runtime.pthread_cond_signal',
      'runtime.findrunnable',
      'runtime.netpoll',
      'runtime.kevent',
      'runtime.main',
      'main.main',
      'github.com/pyroscope-io/client/pyroscope.TagWrapper',
      'runtime/pprof.Do',
      'github.com/pyroscope-io/client/pyroscope.TagWrapper.func1',
      'main.main.func1',
      'main.slowFunction',
      'main.slowFunction.func1',
      'main.work',
      'runtime.asyncPreempt',
      'main.fastFunction',
      'main.fastFunction.func1',
    ],
    levels: [
      [0, 609, 0, 0],
      [0, 606, 0, 13, 0, 3, 0, 1],
      [0, 606, 0, 14, 0, 3, 0, 2],
      [0, 606, 0, 15, 0, 3, 0, 3],
      [0, 606, 0, 16, 0, 1, 0, 10, 0, 2, 0, 4],
      [0, 606, 0, 17, 0, 1, 0, 11, 0, 2, 0, 5],
      [0, 606, 0, 18, 0, 1, 1, 12, 0, 2, 0, 6],
      [0, 100, 0, 23, 0, 506, 0, 19, 1, 2, 0, 7],
      [0, 100, 0, 15, 0, 506, 0, 16, 1, 2, 0, 8],
      [0, 100, 0, 16, 0, 506, 0, 20, 1, 2, 2, 9],
      [0, 100, 0, 17, 0, 506, 493, 21],
      [0, 100, 0, 24, 493, 13, 13, 22],
      [0, 100, 97, 21],
      [97, 3, 3, 22],
    ],
    numTicks: 609,
    maxSelf: 493,
  },
  metadata: {
    appName: 'simple.golang.app.cpu',
    name: 'simple.golang.app.cpu 2022-09-06T12:16:31Z',
    startTime: 1662466591,
    endTime: 1662470191,
    query: 'simple.golang.app.cpu{}',
    maxNodes: 1024,
    format: 'single' as const,
    sampleRate: 100,
    spyName: 'gospy' as const,
    units: 'samples' as const,
  },
  timeline: {
    startTime: 1662466590,
    samples: [
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
      0, 0, 0, 0, 0, 0, 0, 0, 0, 610, 0,
    ],
    durationDelta: 10,
  },
};

export const Flamegraph = () => {
  return (
    <FlamegraphRenderer
      profile={SimpleTree}
      onlyDisplay="flamegraph"
      showToolbar={false}
    />
  );
};

We recommend wrapping a Box around your component to give it some padding.

<Box>
  <FlamegraphRenderer
    profile={SimpleTree}
    onlyDisplay="flamegraph"
    showToolbar={false}
  />
</Box>

Rendering Tracing Data

Note: Currently Pyroscope only supports rendering tracing data from Jaeger.

import { FlamegraphRenderer, convertJaegerTraceToProfile } from "@pyroscope/flamegraph";
import "@pyroscope/flamegraph/dist/index.css";

let trace = jaegerTrace.data[0];
let convertedProfile = convertJaegerTraceToProfile(trace);

function App() {
  return (
    <div>
      <h1>Trace Flamegraph</h1>
      <FlamegraphRenderer
        profile={convertedProfile}
        onlyDisplay="flamegraph"
        showToolbar={true}
      />
    </div>
  );
}