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public static void main(String[] args) throws IOException {
    if (args.length != 1) {
        System.err.println("Must specify a recording file.");
        return;
    }

    RecordingFile.readAllEvents(Path.of(args[0])).stream()
        .filter(e -> e.getEventType().getName().equals("jdk.ExecutionSample"))
        .map(e -> e.getStackTrace())
        .filter(s -> s != null)
        .map(s -> s.getFrames().get(0))
        .filter(f -> f.isJavaFrame())
        .map(f -> f.getMethod())
        .collect(
            Collectors.groupingBy(m -> m.getType().getName() + "." + m.getName() + " " + m.getDescriptor(),
            Collectors.counting()))
        .entrySet()
        .stream()
        .sorted((a, b) -> b.getValue().compareTo(a.getValue()))
        .forEach(e -> System.out.printf("%8d %s\n", e.getValue(), e.getKey()));
}