MacOS – nsurlstoraged and CPU usage

cpumacos

Since yesterday nsurlstoraged is constantly using a huge amount of CPU. Nothing shows up in the logs but opensnoop shows that the process is accessing

/Library/Containers/com.apple.mail/Data/Library/Caches/com.apple.mail/fsCachedData

The directory contains XML files from the beginning of the month (from October 1. at 8:12) up to now (growing). I now have more than 9 GB of cached data and a new file is created every 2-3 seconds.

After a reboot the nsurlstoraged starts again with the same behaviour.

Any idea on how to stop it or on when it will stop by itself?

Best Answer

This solved the issue for me:

Make sure you have a recent backup
Quit Safari (if it is running)
In Finder, type Shift-Cmd-G and enter ~/Library/Caches/com.apple.Safari
A Finder window will open, with the com.apple.Safari folder selected
Delete the whole folder
Restart Safari

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By observing log messages in ~/Library/Logs/Ubiquity/<my username>/, I realized that Ubiquity (iCloud process) kept trying to create a file in a folder that doesn't exist:

ubiquity log

I opened up the Terminal and created this directory and its parent directories up to .ubd:

cd ~/Library/Mobile\ Documents/
sudo mkdir .ubd && cd .ubd
sudo mkdir peer-E2B13E4F-56F7-C79B-1621-E30738B638FE-v23 && cd peer-E2B13E4F-56F7-C79B-1621-E30738B638FE-v23
sudo mkdir ftr

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cd ../..
sudo chown -R <my username> .ubd/

The fan turned silent instantly.

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It's the parental controls. Mine does this when the controlled account loses focus - ie if you switch users, or the computer sleeps. The solution is to switch off parental controls for the account, then reboot.

Best Answer

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