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[44] [45] Activity Monitor appeared in Mac OS X v10.3, when it subsumed the functionality of the programs Process Viewer (a task manager) and CPU Monitor found in the previous version of OS X. [46] [47] In OS X 10.9, Activity Monitor was significantly revamped and gained a fifth tab for "energy" (in addition to CPU, memory, disk, and network). [48]
Instruments (formerly Xray) is an application performance analyzer and visualizer by Apple Inc., integrated in Xcode 3.0 and later versions of Xcode. It is built on top of the DTrace tracing framework from OpenSolaris, which was ported to Mac OS X v10.5 and which is available in all following versions of macOS.
iostat (input/output statistics) is a computer system monitor tool used to collect and show operating system storage input and output statistics. It is often used to identify performance issues with storage devices, including local disks, or remote disks accessed over network file systems such as NFS.
In the field of information security, user activity monitoring (UAM) or user activity analysis (UAA) is the monitoring and recording of user actions.UAM captures user actions, including the use of applications, windows opened, system commands executed, checkboxes clicked, text entered/edited, URLs visited and nearly every other on-screen event to protect data by ensuring that employees and ...
launchd has two main tasks. The first is to boot the system, and the second is to load and maintain services.. Here is a simplified view of the Mac OS X Tiger system startup on a PowerPC Mac (on an Intel Mac, EFI replaces Open Firmware and boot.efi replaces BootX):
A Happy Mac is the normal bootup (startup) icon of an Apple Macintosh computer running older versions of the Mac operating system.