![]() The output then puts each of these characters in front of the respective field. The characters that come after -F represent a field you want to select for output. In man lsof search for OUTPUT FOR OTHER PROGRAMS for details. After launching, launchd proceeds to to launch all of the other daemons your Mac. The only lower number is 0, which belongs to the kernel, represented here as kerneltask. This is why launchd has the Process ID, or PID, of 1, on every Mac system. Little Snitch is a helpful app to block apps from “phoning home” without your knowledge.The -F instructs lsof to produce output suitable for consumption by another process, such as Perl or awk. When you turn on your Mac, launchd is one of the first things launched, after the kernel. If an app’s usage seems relatively high, you might want to investigate if an app is talking to the web server without your knowledge. The Network tab shows information about how your Mac is uploading and downloading network data. It also shows if it’s a 32- or 64-bit process. The Disk tab shows the amount of data that a process has read from and written back to your hard drive. The preventing sleep tab shows if an app is actually preventing the Mac from going to sleep on its normal schedule. ProcessTimer displays the architecture, CPU utilization and percentage of real memory used by the process that has GUI focus. App nap-enabled apps consume very little energy when they aren’t in the foreground. You can sandbox an application on OS X with the built in sandbox (7) facility. This section shows which apps support it. App nap is a relatively new feature to OS X. The average impact tab is a measure of the impact over the past 8 hours (or since startup if it’s been less than 8 hours). The impact tab is a measure of how a process is affecting energy consumption. The Energy tab is extremely useful for laptop users. Swap used is the space on your hard drive used by the Mac’s memory management process. Virtual memory is the amount of memory-address space that is being allocated for memory mapping. Memory used is the amount currently being used at the current time. Physical memory is the amount of RAM your Mac actually has installed. Toward the bottom, there’s a box with Physical Memory, Memory Used, Virtual Memory and Swap Used. As with the CPU tab, you can sort by many different options. The Memory section shows information about how your RAM is being used. You can sort by % to see which app is eating up the most of the processor capacity. I find that the % CPU section is the most helpful. If your fan is spinning on your Mac for no apparent reason, this is the section that you want to investigate. But the most important metric in this instance will be the energy impact score macOS assigns to each process. ![]() With UNIX having many tasks running simultaneously, through the years developers have incorporated several command-line tools that allow. Activity Monitor) - Look using terminal - Or use console commands and that is not the full list I founded all these methods here: Ofc, you can watch by yourself for more using google, bing, etc. The app is broken up into five different tabs: CPU, Memory, Energy, Disk, and Network. You can use - Dock - Launch Menu (Just press Command + Option + ESC) - Install special app for that (e.g. You can find the app inside the Applications/Utilities folder. This allows you to see how different programs and processes affect your Mac’s performance. ![]() The Mac’s Activity Monitor shows what is running on your Mac at any given time. ![]()
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