if self.implementation != "pypy":
        process_config["process.gc_count"] = None

    reader = InMemoryMetricReader()
    meter_provider = MeterProvider(metric_readers=[reader])
    process_metrics = SystemMetricsInstrumentor(config=process_config)
    process_metrics.instrument(meter_provider=meter_provider)

    metric_names = []
    for resource_metrics in reader.get_metrics_data().resource_metrics:
        for scope_metrics in resource_metrics.scope_metrics:
            for metric in scope_metrics.metrics:
                metric_names.append(metric.name)

    observer_names = [
        "process.memory",
        "process.cpu_time",
        "process.thread.count",
        "process.context_switches",
        "process.cpu.utilization",
    ]

    if self.implementation == "pypy":
        self.assertEqual(len(metric_names), 5)
    else:
        self.assertEqual(len(metric_names), 6)
    observer_names.append(
        "process.gc_count",
    )