How to fix sysmond process high CPU problem on Mac

Regular macOS processes can jump from being idle to resource-intensive in the blink of an eye, leaving users stumped over the reasons and the ways to sort out the unexpected spike. Over the past two years or so, several system executables have exhibited such anomalies. This is especially true of WindowServer, kernel_task, accountsd, and nsurlsessiond. This time around, one more entity has extended the list. Apple desktop machines and laptops running different macOS versions, from Mojave to Monterey, may suddenly slow down to a crawl, and a quick look at the Activity Monitor stats reveals that the culprit is a process named sysmond. In some cases, it uses up to 100% CPU and a good deal of memory, which deteriorates system performance, keeps the fans running fast non-stop, and may even trigger a kernel panic condition.

Let’s figure out what sysmond is supposed to do and why it may get out of hand. The name stands for System Monitor Daemon, and that’s undoubtedly a benign object. It is geared toward collecting a bevy of system functioning metrics so that the Activity Monitor can reflect these details in its user-friendly interface. In plain words, this is a useful auxiliary process that shouldn’t precipitate any issues in an ideal world. However, something in this complex data tracking mechanism can go wrong, causing sysmond to consume more processor resources than usual. Some users report this item gobbling up about 15% CPU, others notice it reaching 70%, and some see the usage maxing out permanently. Even if the number isn’t too high, this oddity can put a spanner in the works when the person is using graphics editing apps or playing video games that need processing power to run smoothly. It’s definitely a good idea to stop this waste of the CPU vigor in its tracks.

Special Offer Sysmond high CPU virus may re-infect your Mac multiple times unless you delete all of its fragments, including hidden ones. Therefore, it is recommended to download Combo Cleaner and scan your system for these stubborn files. This way, you may reduce the cleanup time from hours to minutes. Download Now Learn how ComboCleaner works. If the utility spots malicious code, you will need to buy a license to get rid of it.

AIt turns out that addressing the abnormal operation of sysmond on Mac isn’t necessarily rocket science. One of the most common reasons for its misbehavior lurks in the Activity Monitor’s update frequency, a configurable value which – as its name would suggest – specifies at what intervals the utility should refresh its data. The causality is simple there: the lower this parameter, the more resources sysmond needs to do its thing. To check whether this setting is to blame, open the Activity Monitor, expand the View menu, go on to Update Frequency, and make sure the item called “Normally (5 sec)” is selected (see screenshot below). Enabling the “Very often (1 sec)” option is nearly a sure-shot way to drive.

According to some users’ observations, the range of the displayed columns affects sysmond CPU usage. Control-clicking anywhere in the blank area of the Activity Monitor toolbar opens all types of system-related data that should be displayed. If, for instance, Real Private Memory or Real Shared Memory is picked in that listing, the processor load from sysmond will likely skyrocket. Anyway, this is one more thing to examine during the troubleshooting process. Deselecting redundant stuff usually helps.

Whereas this predicament is mostly within the realm of legitimacy, it might have a flavor of abuse. It’s common knowledge that cybercriminals are adept at creating malware that injects sketchy code into benign processes or camouflages itself as one of such binaries to slip below the radar of XProtect, Gatekeeper, and other native macOS protection mechanisms. Should either scenario occur, a booby-trapped variant of the sysmond daemon may run in the background and hoover up the CPU power. The good news is that this situation is unlikely, and yet it’s a good idea to ascertain that it’s not the case. The following information will help dot the i’s and cross the t’s in that regard.

Mac Running Slow? Check Your CPU Usage!

Get rid of sysmond related malware in web browser on Mac

To begin with, the web browser settings taken over by the sysmond malware should be restored to their default values. Although this will clear most of your customizations, web surfing history, and all temporary data stored by websites, the malicious interference should be terminated likewise. The overview of the steps for completing this procedure is as follows:

  • Remove sysmond virus from Safari
    • Open the browser and go to Safari menu. Select Preferences in the drop-down list.
    • Once the Preferences screen appears, click on the Advanced tab and enable the option saying “Show Develop menu in menu bar”.
    • Now that the Develop entry has been added to the Safari menu, expand it and click on Empty Caches.
    • Now select History in the Safari menu and click on Clear History in the drop-down list.
    • Safari will display a dialog asking you to specify the period of time this action will apply to. Select all history to ensure a maximum effect. Click on the Clear History button to confirm and exit.
    • Go back to the Safari Preferences and hit the Privacy tab at the top. Find the option that says Manage Website Data and click on it.
    • The browser will display a follow-up screen listing the websites that have stored data about your Internet activities. This dialog additionally includes a brief description of what the removal does: you may be logged out of some services and encounter other changes of website behavior after the procedure. If you’re okay with that, go ahead and click on the Remove All button.
    • Restart Safari
  • Remove sysmond virus in Google Chrome
    • Open Chrome, click the Customize and control Google Chrome (⁝) icon in the top right-hand part of the window, and select Settings in the drop-down
    • When on the Settings pane, select Advanced
    • Scroll down to the Reset settings section.
    • Confirm the Chrome reset on a dialog that will pop up. When the procedure is completed, relaunch the browser and check it for malware activity.
  • Fix sysmond problem in Mozilla Firefox
    • Open Firefox and go to Help – Troubleshooting Information (or type about:support in the URL bar and press Enter).
    • When on the Troubleshooting Information screen, click on the Refresh Firefox button.
    • Confirm the intended changes and restart Firefox.
  • Leave a Comment