The changes that Apple has made are, to this user at least, completely invisible.Īctivity Monitor now shows you how much power apps are using. While I can’t yet talk definitively about what the battery-life implications of this update will be, I can provide one bit of good news: At no point when I was using Mavericks did I feel I was delayed by a “napping” app that should have been awake. That’s an awfully hard thing to test on prerelease software, but I’m encouraged by Apple’s attempts with features such as App Nap to more aggressively regulate apps that are out of your sight so that they aren’t draining your batteries as they sit idling. (Note: On some screenshots, you can click to enlarge.) Power management and battery life Mavericks warns you about apps that are using a lot of power.Īpple makes a lot of claims about Mavericks making MacBooks more energy-efficient, thereby extending battery life. Here’s the best of the rest of what’s new in OS X Mavericks. Virtual CPU cores are generally weaak sauce, so full utilize of a 4-core CPU can be fairly said to be 400% or better.WWDC way back in our rear-view mirrors and fall just around the corner, it’s time to wrap up my series of hands-on looks at the forthcoming OS X Mavericks release. Observe this display for your favorite programs, and you can see how well (or poorly) they utilize the CPU cores during your particular workflowīecause of virtual CPU cores, a 4-core CPU will show 8 rows, one for each virtual CPU core. The display updates as specified, scrolling left at each interval. The example below shows a system which ran repeated MemoryTester 'compute' tests. Green represents CPU utilization by user applications, red represents CPU utilization by Mac OS X itself, and blue indicates low-priority tasks. The history graph ( Window => CPU History) can be sized wider to show CPU history over quite some time ( View => Update Frequency). Some “vampire” programs waste CPU time when doing nothing useful- these are programs you don’t want to leave running when you’re not using them! CPU history graph Other system activity is negligible in CPU usage terms, but there is substantial disk I/O occurring (497 MB/sec reads). The example above shows the 'ic' ( Integrit圜hecker) program taking 84.8% of one CPU core. Right-click on column headers to choose which columns to display, which can also be arranged to suit.Īs shown below, the %CPU and Real Mem columns have been added to the Disk tab, because it is generally useful when watching disk activity to also watch CPU activity. Generally it is most useful for the arrow to point down so that the largest values sort to the top. Sort by column header y clicking on the column title. The main Activity Monitor window shows processes and various information about them.Ĭhoose All Processes in the popup menu at center. Sometimes you want to know which program is using the most CPU time. Especially on dual display systems, it can be left open on the 2nd monitor for conveniently monitoring system performance.įor more on CPU cores and how well programs use them, see CPU Cores and Application support for multiple CPU cores. Drag it into the dock so that it’s always readily available. The graphical displays provided by Activity Monitor are excellent (found in the Applications/Utilities folder).Īctivity Monitor is found in the Utilities folder under Applications. Send Feedback Related: Apple macOS, CPU cores, macOS Activity Monitor, optimization
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