b.ReportAllocs()

	b.RunParallel(func(pb *testing.PB) {
		foo := 0
		for pb.Next() {
			rwm := NewDRWMutex(ds, "test")
			foo++
			if foo%writeRatio == 0 {
				rwm.Lock(id, source)
				rwm.Unlock(context.Background())
			} else {
				rwm.RLock(id, source)
				for i := 0; i != localWork; i++ {
					foo *= 2
					foo /= 2
				}
				rwm.RUnlock(context.Background())
			}
		}
		_ = foo