Microsoft Exchange Performance Counters

Microsoft Exchange Virtualization HyperV Memory counters

Counter Name Description
Counter Name: Hyper-V Hypervisor [ROOT] Partition\1G GPA Pages Description: Shows the number of 1G pages present in the Guest Physical Address (GPA) space of the partition. This indicates whether a VM is using large pages, which improves overall VM performance.
Counter Name: Hyper-V Hypervisor [ROOT] Partition\2M GPA Pages Description: Shows the number of 2M pages present in the GPA space of the partition. This indicates whether a VM is using large pages, which improves overall VM performance.
Counter Name: Hyper-V Hypervisor [ROOT] Partition\Deposited Pages Description: Shows the number of pages deposited into the partition. This indicates how much memory the hypervisor is using for managing the VM.
Counter Name: Hyper-V VM Vid Partition\Physical Pages Allocated Description: Shows the total number of guest pages and Virtual Infrastructure Driver (VID) pages needed to manage the VM.
Counter Name: Hyper-V VM Vid Partition\Remote Pages Allocated Description: On non-uniform memory access (NUMA)-based systems, this shows whether a VM is spanning multiple nodes.
Counter Name: Memory\Available Mbytes Description: Available megabytes (MB) is the amount of physical memory, in megabytes, immediately available for allocation to a process or for system use. This shows how much memory is remaining for guests. There is a reserve of 256 MB, 512 MB, or 2,048 bytes that the root will always leave outside of guest memory. The exact amount varies depending on the Hyper-V release. If a VM won't start, it may be because there are too few available bytes to satisfy the reserve.
Counter Name: Memory\Pages/sec Description: Pages/sec is the rate at which pages are read from or written to disk, to resolve hard page faults. This is a measure of memory pressure because it tracks hard faults. Hard faults are page faults that require disk access. Usually, the number spikes when there are too few available bytes available on the system, and processes are competing with each other for physical RAM.