DEX Device Performance Metrics

This counter provides the average time in milliseconds for a disk transfer to complete within the corresponding ATI.

This counter provides the average number of disk operations enqueued within the corresponding ATI. Note that in this specific case, since the counter provided by the OS is an instantaneous one, to allow for better precision, the sampling time is 1 second instead of 15 seconds.

This counter provides the average number of I/O disk operations performed within the corresponding ATI.

This counter provides the average number of I/O disk operations that have been split due to fragmentation within the corresponding ATI.

Transfers per Second (TPS) represents the total number of disk input/output (I/O) operations performed per second on a macOS endpoint. Each “transfer” corresponds to a single read or write operation issued to the storage device.

This counter provides the average partition free space within the corresponding ATI.

Mac OS

This counter provides the average time usage of all processors for all threads within the corresponding ATI.

Mac OS

This counter provides the average time that the CPU is spending executing kernel-mode operations within the corresponding ATI.

Mac OS

This counter provides the average time that the CPU is spending handling the interrupts during the corresponding ATI.

This counter provides the average time that the CPU is spending executing user-mode operations within the corresponding ATI.

Mac OS

This counter provides the average time that the CPU is spending handling deferred procedure calls within the corresponding ATI. For a more detailed explanation of DPC, please refer to: https://learn.microsoft.com/en-us/windows-hardware/drivers/kernel/introduction-to-dpc-objects

This counter provides the average number of threads waiting for a CPU (enqueued) to be available within the corresponding ATI. Note that in this specific case, since the counter provided by the OS is an instantaneous one, to allow for better precision, the sampling time is 1 second instead of 15 seconds.

This counter provides the average amount of physical memory available for allocation within the corresponding ATI.

Non-scorable (Mac OS)

Mac OS

Average amount of memory in use with respect to the Commit Limit within the corresponding ATI.

The Commit Limit is the maximum amount of memory that the system can commit to processes. Please note that this counter refers to the amount of RAM and disk used for memory allocation.

This counter provides the rate at which pages are read from the disk to resolve hard page faults (pages not available in RAM).

This counter provides the average amount of memory committed to processes, i.e., that the OS has reserved for them within the corresponding ATI.

This counter provides the rate at which page faults occur (both soft and hard) within the corresponding ATI.

This counter provides the rate at which pages are read from or written to disk.

This counter provides the amount of memory allocated from the kernel memory that cannot be paged to disk with respect to the overall RAM.

Amount of memory allocated from the kernel memory that can be paged (swapped to disk) with respect to the overall RAM.

Memory Pressure is a macOS metric that reflects the overall demand on system memory resources. It indicates how efficiently the operating system is managing available RAM, compression, and swap to meet application and system needs. The counter provides the average value within corresponding ATI.

Swap Usage represents the percentage of swap space currently in use on a macOS system. Swap space is disk storage used as an extension of physical memory (RAM) when available memory becomes constrained. The counter provides the average value within corresponding ATI.

Swap Bytes per Second measures the rate at which data is transferred between physical memory (RAM) and swap space on disk in a macOS system. It reflects how frequently the system is moving memory pages in and out of swap due to memory pressure. The counter provides the average value within corresponding ATI.

Swap Out Bytes per Second measures the rate at which data is written from physical memory (RAM) to swap space on disk in a macOS system. It indicates how frequently the system is offloading memory pages due to increasing memory demand. The counter provides the average value within corresponding ATI.

This counter provides the average physical layer link receive rate negotiated between the WiFi endpoint and the Access Point within the corresponding ATI.

This counter provides the average received signal strength in decibels referenced to 1 milliwatt within the corresponding ATI

Mac OS

This counter provides the average physical layer link transmit rate negotiated between the WiFi endpoint and the Access Point within the corresponding ATI.

Mac OS

Noise represents the level of background radio frequency (RF) interference detected by the WiFi interface on a macOS device. It reflects unwanted signals that can interfere with wireless communication. This counter provides the average value in decibels referenced to 1 milliwatt within the corresponding ATI

This counter provides the average of the GPU computational resources being used within the corresponding ATI. Please note that in Microsoft Windows this counter provides the highest-utilized engine among all engine types.

Mac OS

It is the total time required from the moment a user initiates authentication to the point at which the desktop environment is loaded.

Logon events are classified into the following types:

• Cached Interactive – Logons performed using locally cached credentials (typically when network connectivity to authentication services is unavailable)
• Interactive – Standard logons performed directly on the device
• Remote Interactive – Logons performed through remote access sessions (e.g., remote desktop)

Mac OS

It is the total time required for an endpoint device to start from a kernel boot to the launch of the logon screen. Boot Duration is reported per individual boot.

Boot events are categorized based on the type of system startup.

Windows:

• Normal Mode – Standard full system startup
• Fast Mode – Startup using fast boot/hibernation mechanisms (e.g., hybrid boot), reducing initialization time. Duration is not reported in this case as there is no kernel boot as such.
• Resume from Hibernation – System restoration from a hibernated state without a full reboot. Duration is not reported in this case as there is no kernel boot as such.

macOS:

• Normal Mode – Standard system startup
• Safe Mode – Startup with minimal drivers and system checks, used for troubleshooting and diagnostics

Mac OS

It represents the total count of critical system stability incidents recorded on an endpoint device over a given period.

These events typically include:

• System Crash/ Blue-Screen-Of-Death (BSOD) (Operating System crashes / Unexpected system restarts) both for Windows and Mac OS
• Hard resets (e.g., power loss or forced reboot)
• Manual shutdowns via long press of the power button

Mac OS