Windows

• % Total Processor Time: The average percentage of time that all the processors on the system are busy executing non-idle threads. On a multiprocessor system, if all processors are always busy, this is 100%, if all processors are 50% busy this is 50% and if 1/4 of the processors are 100% busy this is 25%.

• File Data Operations/sec: The rate at which the computer issues read and write operations to file system devices. This does not include File Control Operations.

• % Disk Time: The percentage of elapsed time that the selected disk drive is busy servicing read or write requests.

• Pages Downloaded per Second: The Pages Downloaded per Second metric shows the number of Web pages (y-axis) downloaded from the server during each second of the scenario run (x-axis). This graph helps you evaluate the amount of load Vusers generate, in terms of the number of pages downloaded.

• Page Faults/sec: This is a count of the page faults in the processor. A page fault occurs when a process refers to a virtual memory page that is not in its Working Set in the main memory.

• Pool Nonpaged Bytes: The number of bytes in the nonpaged pool, a system memory area where space is acquired by operating system components as they accomplish their appointed tasks.

• Pages/sec: The number of pages read from the disk or written to the disk to resolve memory references to pages that were not in memory at the time of the reference.

• Total Interrupts/sec: The rate at which the computer is receiving and servicing hardware interrupts. The devices that can generate interrupts are the system timer, the mouse, data communication lines, network interface cards, and other peripheral devices.

• Threads: The number of threads in the computer at the time of data collection. Notice that this is an instantaneous count, not an average over the time interval.

• Private Bytes: The current number of bytes that the process has allocated that cannot be shared with other processes.

Unix

• Average load: Average number of processes simultaneously in Ready state during the last minute.

• Collision rate : Collisions per second detected on the Ethernet.

• Context switches rate: Number of switches between processes or threads, per second.

• CPU utilization: Percent of time that the CPU is utilized.

• Disk rate: Rate of disk transfers.

• Incoming packets error rate: Errors per second while receiving Ethernet packets .

• Incoming packets rate: Incoming Ethernet packets per second.

• Interrupt rate: Number of device interrupts per second.

• Outgoing packets errors rate: Errors per second while sending Ethernet packets.

• Outgoing packets rate: Outgoing Ethernet packets per second.

• Page-in rate: Number of pages read to physical memory, per second.

• Page-out rate: Number of pages written to pagefile(s) and removed from physical memory, per second.

• Paging rate: Number of pages read to physical memory or written to pagefile(s), per second.

• Swap-in rate: Number of processes being swapped.

• Swap-out rate: Number of processes being swapped.

• System mode CPU utilization: Percent of time that the CPU is utilized in system mode.

• User mode CPU utilization: Percent of time CPU is utilized in user mode.