public static boolean isDirectMemoryCacheAlignmentSupported() {
        return PlatformDependent.hasUnsafe();
    }
@Test
    public void testArenaMetricsNoCacheAlign() {
        Assumptions.assumeTrue(PooledByteBufAllocator.isDirectMemoryCacheAlignmentSupported());
        testArenaMetrics0(new PooledByteBufAllocator(true, 2, 2, 8192, 9, 0, 0, 0, true, 64), 100, 0, 100, 100);
    }