@Test
    public void autoscaling_respects_upper_limit() {
        var min = new ClusterResources( 2, 1, new NodeResources(1, 1, 1, 1));
        var now = new ClusterResources(5, 1, new NodeResources(1.9, 70, 70, 1));
        var max = new ClusterResources( 6, 1, new NodeResources(2.4, 78, 79, 1));
        var fixture = DynamicProvisioningTester.fixture()
                                               .awsProdSetup(true)
                                               .initialResources(Optional.of(now))
                                               .capacity(Capacity.from(min, max)).build();

        fixture.setScalingDuration(Duration.ofHours(6));
        fixture.tester().clock().advance(Duration.ofDays(1));
        fixture.loader().applyLoad(new Load(0.25, 0.95, 0.95, 0, 0), 120);
        fixture.tester().assertResources("Scaling up to limit since resource usage is too high",
                                         6, 1, 2.4,  78.0, 79.0,
                                         fixture.autoscale());
    }
We prefer fewer nodes for container clusters as (we assume) they all use the same disk and memory
node-repository/src/test/java/com/yahoo/vespa/hosted/provision/autoscale/AutoscalingTest.java