sysmond on Mac Using High CPU? Here’s the Likely Reason & How to Fix It

sysmond, as you might deduce from its name, stands for System Monitor Daemon and is integral to Activity Monitor. If you utilize Activity Monitor to oversee your Mac's system resources, including processes, CPU usage, energy consumption, disk activity, network status, and particularly memory usage, you might notice that sysmond itself consumes a significant amount of system resources.

Let's explore sysmond further to understand its function, why it occasionally consumes high levels of CPU, and how to address this issue.

What is sysmond?

sysmond is a system daemon that operates in the background of MacOS to monitor system activity. It tracks all system resources and processes, and this data is typically displayed to the user through Activity Monitor.

If you observe sysmond running, it is probably because you have Activity Monitor active on your Mac, either openly or through the Dock monitor feature.

Why is sysmond Using High CPU?

There are primarily two reasons why sysmond might be consuming high CPU on your Mac.

Firstly, if you are specifically using the "Memory" tab in Activity Monitor, you might notice sysmond using a lot of CPU. This is likely due to the CPU-intensive nature of memory sampling.

In recent versions of MacOS, you can easily replicate this by opening Activity Monitor, switching to the Memory tab, waiting a few seconds, and then quickly switching to the CPU tab. You might see sysmond's CPU usage spike to 100% or more, but it should soon return to normal if you remain on the CPU tab or other system activity tabs, except for "Memory".

Secondly, setting a low update frequency in Activity Monitor, which is beneficial for detailed reporting and troubleshooting, can cause sysmond to be more active. This is because the daemon needs to sample processes more frequently and rapidly to provide updates.

Other potential reasons for high CPU usage by sysmond include the use of third-party system monitoring tools.

What’s the easiest way to get sysmond to use less CPU?

If you consistently find sysmond consuming large amounts of CPU, first try switching away from the "Memory" tab in Activity Monitor.

You might also consider lowering the sample speed and update frequency, though this may not always be preferable.

Another solution is to simply close Activity Monitor or any other system monitoring applications or processes you have running.

If sysmond continues to use CPU aggressively, restarting your Mac could help.

Personally, I use Activity Monitor frequently enough to have set up a keyboard shortcut to open it. While I often see sysmond when looking at the Memory tab, it rarely uses significant CPU outside of that context.

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Have you encountered sysmond using substantial system resources on your Mac? Was it due to the Memory tab in Activity Monitor or another reason? Share your experiences and observations in the comments.

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