Since a couple of days I have problems with the CPU usage of my Safari installation. It runs on OS X Yosemite 10.10.4 (MacBook Pro 13" from 2011).
To reproduce it I only have to open one empty tab and do not need to interact with Safari. After a few seconds the CPU usage goes extremely up. Also the fan is mostly on full speed and the Laptop gets quite hot.
But within that situation if I would open new tabs and browse web content it would work without problems. But then when I want to close Safari it hangs. I can only close it by killing its process.
So I tried analyzing it a bit by having a look at the process:
Here it shows that Safari has 98.4% CPU and a quite huge CPU time of 30:13,03.
I then had a look on what happens inside the process by looking at the call graph, but I did not find anything suspicious (but to be honest I am not a C or Apple expert).
I found some similar articles about Safari CPU problems which are caused by the
discoveryd process. But as far as I understood those problems are already solved with Yosemite 10.10.4.
Any ideas about how I could track down the problem and fix my Safari installation?