Should I be concerned about swap usage?

Hello, I have an M3 MacBook Air with MacOS Sequoia as the operating system. I've noticed that from time to time, particularly after my computer hasn't been shut down for a long period(approximately two days) that swap starts being used. My computer has 8GB of RAM. The RAM usage seldom goes above 6GB and the memory pressure section constantly shows a green bar; it never turns red. I'm thus curious as to why, in spite of the fact that the RAM usage never gets close to 8GM, the computer uses swap? Is this concerning and should I be concerned about the health of the SSD as a result of this? Does MacOS Sequoia use more RAM than MacOS Sonoma and older operating systems for the same activity? I'd appreciate it if anyone could explain the swap usage under these circumstances and how, if at all, the health of the SSD would be affected, please.

MacBook Air 13″, macOS 15.1

Posted on Jan 27, 2025 3:37 AM

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13 replies

Jan 27, 2025 5:18 AM in response to mrmagnetoman88

mrmagnetoman88 wrote:

I'm thus curious as to why, in spite of the fact that the RAM usage never gets close to 8GM, the computer uses swap?

I think that the operating system typically opens files using memory mapping. In some cases, this can case the open file to be represented as swap space.

Is this concerning and should I be concerned about the health of the SSD as a result of this?

It is not concerning and you should not be worried.

Does MacOS Sequoia use more RAM than MacOS Sonoma and older operating systems for the same activity?

Did you think that all those new features came for free? There isn't any significant difference. I haven't noticed anything. I actually skipped Sonoma altogether, so I haven't noticed any difference between Sequoia and Ventura. As Apple ramps up the use of AI, that's going to have a cost in terms of CPU, disk space, and RAM, but Apple also keeps giving us more of that to spend.

Jan 27, 2025 3:49 AM in response to mrmagnetoman88

The first action would to update to current Sequoia 15.2 - Current Version


Or, wait, a possible Sequoia 15.3 in just over the horizon


The swap file is a system file that creates temporary storage space on a solid-state drive or hard disk when the system runs low on memory. The file swaps a section of RAM storage from an idle program and frees up memory for other programs.

Jan 27, 2025 4:19 AM in response to mrmagnetoman88

I think you may have answered your own question. I think it’s a good idea to shutdown each night and restart in the morning as this allows macOS to perform regular maintenance processes. If you want to do a deep maintenance periodically shut down and restart in safe mode followed by a normal restart.


if you have any antivirus or cleanup apps installed remove them using the developers instructions, they are a known cause of issues.


The more apps you have installed the greater chance of background tasks left running so remove old apps that you don’t use.

Jan 27, 2025 4:20 AM in response to Owl-53

Hello PRP_53, thanks for your response. I'm curious as to why swap would need to be used when the system doesn't seem to be low on memory. For instance, when the RAM usage on my computer at one time was about 5.6GB, about 560MB of swap was used. Why doesn't the operating system just rely on all the RAM at its disposal(there was an additional 2.4GB of unused RAM) instead of swapping RAM when it didn't seem to be running low on memory?

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Should I be concerned about swap usage?

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