I noticed my MBP got really slow, which must be strange with SSD and 8GB of RAM.
So I opened the Activity Monitor to discover a process called ubd
keeps its CPU usage very high, about 120% most of the time:
I found a thread that discusses the issue but it is related to having hundreds of iCloud certificates in the keychain, which I don't.
How do I go on with diagnosing the issue?
Best Answer
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:I opened up the Terminal and created this directory and its parent directories up to
.ubd
:Then I changed the newly created directories' owner from root to myself:
The fan turned silent instantly.