Vulkan has a lot of properties of Physical Device. Is it possible to get some information to assess GPU performance? How I know there are size of max workgroup and max number of invocations. Are there some properties of hardware performance like: number of cores, frequency, max data rate and so on? Maybe somebody had an experience to assess GPU performance using Vulkan.
You can get some kind of GPU information through VkPhisicalDeviceProperties and VkPhisicalDeviceFeatures. You can get performance counters through the extension VK_KHR_performance_query. There may be obscure, vendor-specific extensions that can tell more GPU details like the ARM extension VK_ARM_shader_core_properties. But information such as GPU load, operating frequency and others you usually get through the operating system or a specific library provided by the GPU vendor.