Usage Mac App

The Storage pane of About This Mac is the best way to determine the amount of storage space available on your Mac. Disk Utility and other apps might show storage categories such as Not Mounted, VM, Recovery, Other Volumes, Other, Free, or Purgeable. Update, Reconfigure, or Reinstall the Problem App. If your high CPU usage gremlin is a specific app, you can take several steps to solve the issue. If, however, kerneltask or another macOS process appears to be causing the problem, you should continue to the next section of the article. Like a car, your Mac needs to be monitored and cared for to keep it running as smoothly as possible. While your vehicle comes with a ton of gauges to keep track of your oil, temperature, and in some cases, even tire pressure, your Mac has no easy way to watch for low memory or high disk usage. Normally you would have to open up Activity Monitor to take a look at your usage stats, but now there.

1. App For Mac
2. Mac Disk Usage App
3. Best Mac App
4. Usage Mac Apps
5. Usage Mac App Store

Spindump in Prioritize Work at the Task Level demonstrates usage. See spindump(8) Mac OS X Manual Page. Get logs indicating each time your app is woken as a result of a timer firing. See Recognize and Address Timer Issues in Minimize Timer Usage and timerfires(1) Mac OS X Manual Page. Get CPU usage information, as shown in. Usage for Mac is here to set a new standard on system monitoring! It's a simple, modern app for keeping an eye on your Mac's activity and performance. In the first release Usage can monitor: You can build a menu bar and popover that fit your needs. The app has 21 menu bar components and 13 popover widgets!

Monitor Usage Regularly

Throughout the development process, verify that your app is running efficiently by regularly monitoring, testing, and retesting its performance. A variety of tools and utilities can help you analyze your app's energy impact.

Activity Monitor

Activity Monitor is installed in the /Applications/Utilities folder on every Mac. It provides a running list of active processes, along with various metrics.

Assess Energy Usage

Metrics that relate to energy use and can be viewed in the Energy pane of Activity Monitor (see Figure 16-1). Use the View > Columns menu to enable or customize the metrics displayed.

As shown in Figure 16-2, graphs denoting overall energy impact and battery statistics are displayed at the bottom of the Energy pane.

The Energy pane in Activity Monitor displays the following columns:

• Preventing Sleep. Indicates when an app is preventing the system from sleeping, perhaps because it has initiated activity that has disabled sleep (see Determine When Your App Is Preventing Sleep).

• Energy Impact. Assigns an energy impact score to your app, based on how efficiently it is operating. A variety of factors are taken into account when this score is assigned, including CPU usage, network activity, disk I/O, and more.

• Avg Energy Impact. Indicates the average energy impact score over the past 8 hours, or since the time the Mac was restarted.

• App Nap. Indicates when an app has been placed in App Nap (see Extend App Nap). You can use this column to monitor your running app and make sure App Nap activates when it's placed in the background and hidden or fully obscured by another app.

Assess CPU Usage

High CPU usage is a major contributing factor to high energy consumption, and Activity Monitor implements a variety of features that can help assess the amount of CPU your app is utilizes. The CPU pane shows the percentage of CPU your app is using at any given time, in relation to the other active processes on the system, as shown in Figure 16-3. When your app isn't active, the number in this column should be 0.0. High values here, especially consistent ones, indicate that your app may not be as energy efficient as it could be. You should look carefully at your app for ways to reduce its CPU requirements.

Graphs and statistics related to overall system CPU usage are displayed at the bottom of the CPU pane. See Figure 16-4.

Activity Monitor also includes provides graphical displays of historical and current state CPU core utilization.

• CPU Usage. Represents system-wide usage across all CPU cores. To display this window, choose Window > CPU Usage. See Figure 16-5.

• CPU History. Represents system-wide usage across all CPU cores over a period of time. It begins to capture usage once the window is displayed, and updates as usage fluctuates. To display this window, choose Window > CPU History. See Figure 16-5.

Xcode

There's no better time to diagnose your app's energy footprint than when you are in the process of developing your app. Xcode includes a number of features that can help.

Debugging Gauges

The debug navigator in Xcode (choose View > Navigators > Show Debug Navigator) provides a series of gauges that allow you to analyze the energy impact of your app while testing it within Xcode. These gauges are displayed when your app has been launched by Xcode and is actively running or paused.

• Energy impact gauge. Displays a report of your app's current energy impact and a bar graph of its recent impact. When users interact with your app, it should have a low energy impact. When users aren't interacting with your app, it should have zero energy impact.

• CPU gauge. Monitors your app and reports on its current and historical CPU usage. Spikes when your app is supposed to have low CPU activity or when your app is idle may indicate problem areas where optimizations can be made.

• Disk usage gauge. Alerts you to disk read and write activity and files your app has opened. Use this gauge to identify unexpected or recurring small I/O activity.

• Network usage gauge. Accounts for all inbound and outbound network traffic. Look for discretionary activity that your app performs directly, and consider updating it to be performed by the system at more energy optimal times.

Debugging

Knowing how to test and debug your app can go a long way toward helping you identify potential energy problems and areas for improvement. Debug Your App in Xcode Overview and Testing with Xcode describe common debugging techniques. If your app performs tasks asynchronously using GCD, NSOperationQueue, or XPC, debugging can be a little harder. There are, however, techniques that can help you debug your app even in these complex situations.

• Queue debugging. If your app uses GCD dispatch queues to perform operations, use queue debugging techniques to ensure that work is being performed as expected. To learn about GCD, dispatch queues, and queue debugging, watch the session WWDC 2013: Debugging with Xcode, and review the Concurrency Programming Guide and Grand Central Dispatch (GCD) Reference.

• Activity tracing. This technology makes finding bugs faster and easier by logging trace messages as your app runs. When a problem occurs, follow these messages to identify the code that produced the failure. For information on activity tracing, see the session WWDC 2014: Fix Bugs Faster Using Activity Tracing.

Instruments

The Instruments app, which is included with Xcode, gathers data from your running app and presents it in a graphical timeline. You gather data about such performance areas as your app's CPU usage, disk activity, network activity, and graphics operations. By viewing the data together, you can analyze different aspects of your app's performance to identify potential areas of improvement.

Instruments provides a variety of preconfigured profiling templates, which help you analyze your app and ensure that it is performing efficiently. Some of these relate directly to energy.

• Activity Monitor template. Monitors the CPU, memory, disk, and network usage statistics of your app. Results are graphically represented at a high level in a timeline. If you prefer, you can dive deeper into detailed statistics for more comprehensive analysis.

• Time Profiler template. Captures stack trace information at prescribed intervals, while displaying a timeline of the percentage of CPU being used.

Note

For detailed information about using Instruments, see Instruments User Guide.

Command-Line Tools

Command-line tools can be useful if you are already working in command-line mode or if you are building scripts to monitor your apps.

• Ppsspp gold 1 3 0 download free. dtrace. Access low-level information about the operating system kernel and the user processes running on your computer. To learn about DTrace and the D scripting language, see the Solaris Dynamic Tracing Guide, available from the Oracle Technology Network, and the dtrace(1) Mac OS X Manual Page.

• fs_usage. Get a running list of system calls related to activity in the file system. Use fs_usage command options to specify a timeout, filtering, and more. See fs_usage in Minimize I/O or refer to the fs_usage(1) Mac OS X Manual Page.

• pmset. Adjust system-wide power management settings, such as idle sleep timing, automatic restart on power loss, and more. It can also be used to put the device to sleep, and to determine whether any power assertions are in place. See pmset(1) Mac OS X Manual Page.

• powermetrics. Monitor CPU usage and determine how much CPU time is being allocated to different quality of service classes. This can be helpful for ensuring that quality of service classes are properly implemented. See powermetrics in Prioritize Work at the Task Level or the powermetrics(1) Mac OS X Manual Page.

• sample. Gather information about your app at specified intervals and produce a report of functions occurring at those intervals. This information helps you diagnose responsiveness problems, high CPU use problems, and more. See sample(1) Mac OS X Manual Page.

• spindump. Use this tool with the -timeline option to sample and profile your app in order to determine which QoS class applies to a thread as a specific portion of code executes at a given time. spindump in Prioritize Work at the Task Level demonstrates usage. See spindump(8) Mac OS X Manual Page.

• timerfires. Get logs indicating each time your app is woken as a result of a timer firing. See Recognize and Address Timer Issues in Minimize Timer Usage and timerfires(1) Mac OS X Manual Page.

• top. Get CPU usage information, as shown in Listing 16-1.

  Listing 16-1Using top to identify CPU usage for a specified process
  1. $ top -pid 68041
  2. PID COMMAND %CPU
  3. 68041 Adventure 18.1

Quartz Debug Utility

The Quartz Debug utility (part of the Graphics Tools for Xcode package in the Developer site Downloads section) helps you debug graphics-related issues in your apps. See Detect Extraneous Updates.

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The Optimized Storage features of your Mac help you save storage space by storing your content in iCloud and making it available on demand:

• When storage space is needed, files, photos, movies, email attachments, and other files that you seldom use are stored in iCloud automatically.
• Each file stays right where you last saved it, and downloads when you open it.
• Files that you've used recently remain on your Mac, along with optimized versions of your photos.

If you haven't yet upgraded to macOS Sierra or later, learn about other ways to free up storage space.

Find out how much storage is available on your Mac

Choose Apple menu  > About This Mac, then click Storage. Each segment of the bar is an estimate of the storage space used by a category of files. Move your pointer over each segment for more detail.

Click the Manage button to open the Storage Management window, pictured below. Download os x yosemite 10 10 developer preview 3.

Manage storage on your Mac

The Storage Management window offers recommendations for optimizing your storage. If some recommendations are already turned on, you will see fewer recommendations.

Store in iCloud

Click the Store in iCloud button, then choose from these options:

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• Desktop and Documents. Store all files from these two locations in iCloud Drive. When storage space is needed, only the files you recently opened are kept on your Mac, so that you can easily work offline. Files stored only in iCloud show a download icon , which you can double-click to download the original file. Learn more about this feature.
  
• Photos. Store all original, full-resolution photos and videos in iCloud Photos. When storage space is needed, only space-saving (optimized) versions of photos are kept on your Mac. To download the original photo or video, just open it.
  
• Messages. Store all messages and attachments in iCloud. When storage space is needed, only the messages and attachments you recently opened are kept on your Mac. Learn more about Messages in iCloud.

Storing files in iCloud uses the storage space in your iCloud storage plan. If you reach or exceed your iCloud storage limit, you can either buy more iCloud storage or make more iCloud storage available. iCloud storage starts at 50GB for $0.99 (USD) a month, and you can purchase additional storage directly from your Apple device. Learn more about prices in your region.

Optimize Storage

Click the Optimize button to save space by automatically removing watched movies and TV shows. When storage space is needed, movies or TV shows that you purchased from Apple and already watched are removed from your Mac. Click the download icon next to a movie or TV show to download it again.

Your Mac will also save space by keeping only recent email attachments on this Mac when storage space is needed. You can manually download any attachments at any time by opening the email or attachment, or saving the attachment to your Mac.

Optimizing storage for movies, TV shows, and email attachments doesn't require iCloud storage space.

Empty Trash Automatically

Empty Trash Automatically permanently deletes files that have been in the Trash for more than 30 days.

Reduce Clutter

Reduce Clutter helps you identify large files and files you might no longer need. Click the Review Files button, then choose any of the file categories in the sidebar, such as Applications, Documents, Music Creation, or Trash.

You can delete the files in some categories directly from this window. Other categories show the total storage space used by the files in each app. You can then open the app and decide whether to delete files from within it.

Learn how to redownload apps, music, movies, TV shows, and books.

Where to find the settings for each feature

The button for each recommendation in the Storage Management window affects one or more settings in other apps. You can also control those settings directly within each app.

• If you're using macOS Catalina or later, choose Apple menu  > System Preferences, click Apple ID, then select iCloud in the sidebar: Store in iCloud turns on the Optimize Mac Storage setting on the right. To turn off iCloud Drive entirely, deselect iCloud Drive.
• If you're using macOS Mojave or earlier, choose Apple menu > System Preferences, click iCloud, then click Options next to iCloud Drive. Store in iCloud turns on the Desktop & Documents Folders and Optimize Mac Storage settings.
• In Photos, choose Photos > Preferences, then click iCloud. Store in iCloud selects iCloud Photos and Optimize Mac Storage.
• In Messages, choose Messages > Preferences, then click iMessage. Store in iCloud selects Enable Messages in iCloud.

• If you're using macOS Catalina or later, open the Apple TV app, choose TV > Preferences from the menu bar, then click Files. Optimize Storage selects 'Automatically delete watched movies and TV shows.'
• In you're using macOS Mojave or earlier, open iTunes, choose iTunes > Preferences from the menu bar, then click Advanced. Optimize Storage selects 'Automatically delete watched movies and TV shows.'
• In Mail, choose Mail > Preferences from the menu bar, then click Accounts. In the Account Information section on the right, Optimize Storage sets the Download Attachments menu to either Recent or None.

Mac Disk Usage App

Empty Trash Automatically: From the Finder, choose Finder > Preferences, then click Advanced. Empty Trash Automatically selects 'Remove items from the Trash after 30 days.'

Other ways that macOS helps automatically save space

With macOS Sierra or later, your Mac automatically takes these additional steps to save storage space:

• Detects duplicate downloads in Safari, keeping only the most recent version of the download
• Reminds you to delete used app installers
• Removes old fonts, languages, and dictionaries that aren't being used
• Clears caches, logs, and other unnecessary data when storage space is needed

How to free up storage space manually

Best Mac App

Even without using the Optimized Storage features described in this article, you can take other steps to make more storage space available:

Usage Mac Apps

• Music, movies, and other media can use a lot of storage space. Learn how to delete music, movies, and TV shows from your device.
• Delete other files that you no longer need by moving them to the Trash, then emptying the Trash. The Downloads folder is good place to look for files that you might no longer need.
• Move files to an external storage device.
• Compress files.
• Delete unneeded email: In the Mail app, choose Mailbox > Erase Junk Mail. If you no longer need the email in your Trash mailbox, choose Mailbox > Erase Deleted Items.

Learn more

Usage Mac App Store

• The Storage pane of About This Mac is the best way to determine the amount of storage space available on your Mac. Disk Utility and other apps might show storage categories such as Not Mounted, VM, Recovery, Other Volumes, Other, Free, or Purgeable. Don't rely on these categories to understand how to free up storage space or how much storage space is available for your data.
• When you duplicate a file on an APFS-formatted volume, that file doesn't use additional storage space on the volume. Deleting a duplicate file frees up only the space required by any data you might have added to the duplicate. If you no longer need any copies of the file, you can recover all of the storage space by deleting both the duplicate and the original file.
• If you're using a pro app and Optimize Mac Storage, learn how to make sure that your projects are always on your Mac and able to access their files.