diskimagesiod hammering CPU

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Level 1

9 points

diskimagesiod hammering CPU

202 5K iMac running Sequoia 15.0

Since upgrading when diskimagesiod is running it is absolutely HAMMERING the CPU. Currently backing up and fluctuating between 160-515%.

Fans are running full blast and the machine is hot.

I've tried a new Time Machine backup but same. This is to a Synology NAS that I've been using for year or so, other machines backing up to it using TM are fine.

It's not just the first backup hammering things, it's all subsequent backups.

Is this a known issue?

iMac (2017 – 2020)

Posted on Sep 25, 2024 6:08 AM

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Answer 1

Oct 12, 2024 8:29 AM in response to eludlow9876

I have the same problem on a Mac Book Air M1.

Timemachine is on Synology.

I tried deleting the backup and creating a new one. It didn't help

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Answer 2

BDAqua

Level 10

244,925 points

Oct 12, 2024 9:35 AM in response to eludlow9876

In Disk Utility>View, select Show all Devices, highlight the top left entry.

Run Disk First Aid on all items in the left panel, from top down.

Are you running any VPN, Anti-Virus, or Cleaning apps?

Eject your TM drive for a test.

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Answer 3

Oct 13, 2024 9:10 AM in response to BDAqua

Thanks.

I tried all of this as soon as the problem occurred. Without success. It is interesting that the error does not appear when using a usb hdd, but only when using a NAS. It doesn't matter if via Wifi or LAN. This was not a problem in previous versions of MacOS.

I do not use any antivirus or cleaning software.

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