How do i find out memory usage on my mac

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“Your system has run out of application memory”

How do I see how much memory I have used on my iMac? More Less. Communities Contact Support. Sign in. Browse Search. Ask a question. User profile for user: The iStat Pro widget is shown below. It's a good idea to check the widget a couple times a day, just to make sure you have enough free RAM available. Remember, if the free RAM is getting dangerously low, quit some applications to free up space.

This application runs in the background and displays an icon on your menu bar that indicates how much RAM memory your Mac has available.

Understanding Mac OS X Memory Usage

And seriously, can you think of a better way to monitor memory than looking at your menu bar? Now you've got a handy little icon in your menu bar, as shown below. All you have to do is look up to monitor your Mac's memory usage! If your Mac always seems to be running out of memory, you probably need to upgrade the RAM. You can never have enough!

How to reduce memory usage on your Mac

Users with other models of Macs can find inexpensive memory modules here. A former ghost writer for some of Apple's most notable instructors, Cone founded Macinstruct in , a site with OS X tutorials that boasts hundreds of thousands of unique visitors per month. You can email him at: The place to learn about your Mac. Tips and tutorials for novices and experts. Last updated: Here's how to use Activity Monitor to monitor your Mac's memory usage: Open the Activity Monitor application.

The window shown below appears. The color red shows either the number of writes out per second or the amount of data written per second. The Network pane shows how much data your Mac is sending or receiving over your network. Use this information to identify which processes are sending or receiving the most data.

The information at the bottom of the Network pane shows total network activity across all apps. The graph also includes a pop-up menu to switch between showing packets or data as a unit of measurement.

Ways to reduce memory usage on Mac (and free up your RAM)

The color blue shows either the number of packets received per second or the amount of data received per second. The color red shows either the number of packets sent per second or the amount of data sent per second. In macOS High Sierra The Cache pane shows how much cached content that local networked devices have uploaded, downloaded, or dropped over time. Use the Maximum Cache Pressure information to learn whether to adjust Content Caching settings to provide more disk space to the cache.

Lower cache pressure is better. Learn more about cache activity. The graph at the bottom shows total caching activity over time. Choose from the pop-up menu above the graph to change the interval: Overview The processes shown in Activity Monitor can be user apps, system apps used by macOS, or invisible background processes. The View menu also allows you to choose which processes are shown in each pane: All Processes All Processes Hierarchically: My Processes: Processes owned by your macOS user account.

System Processes: Processes owned by macOS. Other User Processes: Active Processes: Inactive Processes: Running processes that are sleeping. Windowed Processes: Processes that can create a window.

These are usually apps. Selected Processes: Processes that you selected in the Activity Monitor window. Applications in the last 8 hours: Apps that were running processes in the last 8 hours. More information is available at the bottom of the CPU pane: The percentage of CPU capability currently used by system processes, which are processes that belong to macOS.

The percentage of CPU capability currently used by apps that you opened, or by the processes those apps opened. The percentage of CPU capability not being used. CPU Load: The color blue shows the percentage of total CPU capability currently used by user processes. The color red shows the percentage of total CPU capability currently used by system processes.

How to reduce your Mac memory usage

The total number of threads used by all processes combined.