How to Check Mac Performance

Joel Mason

Mac, Tutorials

Do you ever feel like your Mac is running slower than usual? It might be time to check its performance and make some optimizations. In this article, we will discuss how to check the performance of your Mac and identify any potential issues that might be affecting its speed.

Checking Disk Usage

One of the first things you should do is check the disk usage on your Mac. A full or nearly full disk can significantly impact performance. To check your disk usage:

  1. Click on the Apple menu in the top-left corner of your screen.
  2. Select “About This Mac” from the drop-down menu.
  3. In the window that appears, click on “Storage”.

This will show you a breakdown of how much space is being used by different categories like applications, documents, and system files. If you notice that your disk is almost full, consider deleting unnecessary files or moving them to an external storage device to free up space.

Monitoring CPU Usage

The next step is to monitor the CPU usage on your Mac. High CPU usage can cause your Mac to slow down and become unresponsive. To check CPU usage:

  1. Open “Activity Monitor” by searching for it in Spotlight or locating it in the Utilities folder within Applications.
  2. In the Activity Monitor window, click on the “CPU” tab at the top.
  3. You can now see a list of processes along with their corresponding CPU usage percentages.

If you notice any processes consuming a significant amount of CPU resources, they might be the culprit behind the slowdown. You can select such processes and choose to quit them or investigate further.

Checking Memory Usage

Insufficient memory (RAM) can also impact your Mac’s performance. To check memory usage:

  1. Open “Activity Monitor” again.
  2. In the Activity Monitor window, click on the “Memory” tab at the top.
  3. You will now see a breakdown of memory usage by different applications and processes.

If your Mac is consistently using a large amount of memory, it might be worth considering upgrading your RAM or closing unnecessary applications that are consuming excessive memory.

Running Disk Utility

In addition to checking disk usage, you should also run Disk Utility to scan for any errors on your storage drive. To run Disk Utility:

  1. Open Spotlight by clicking on the magnifying glass icon in the top-right corner of your screen.
  2. Type “Disk Utility” and press Enter to open it.
  3. Select your disk from the sidebar, usually named “Macintosh HD”.
  4. Click on “First Aid” at the top and then click on “Run” to start scanning for errors.

If any errors are found, Disk Utility will attempt to repair them. This can help improve your Mac’s overall performance.

Cleaning Up Startup Items

The number of startup items can impact how quickly your Mac boots up and performs after logging in. To manage startup items:

  1. Go to the Apple menu and select “System Preferences”.
  2. Click on “Users & Groups” (or “Users & Accounts” depending on your macOS version).
  3. Select your user account from the sidebar.
  4. Navigate to the “Login Items” tab and review the list of applications that launch at startup.
  5. You can remove unnecessary items by selecting them and clicking on the “-” button below the list.

This can help reduce the load on your Mac during startup and potentially improve its performance.


In conclusion, checking your Mac’s performance regularly is essential for maintaining its speed and efficiency. By monitoring disk usage, CPU usage, memory usage, running Disk Utility, and managing startup items, you can optimize your Mac’s performance and enjoy a smoother experience. Remember, a well-performing Mac leads to increased productivity!

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