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Hi everyone!
Safari become very lag when I open a new tab or pages, and when I checked Activity Monitor, the one that made my mac lag is Safari Web Content, it can eats 80-90% of CPU.However, it only happened if I open new tab/pages. I never experienced lag with other browser such as Firefox before.
Anyone ever experienced this? Any suggestion or solution will be appreciated.
Thanks.
Macbook 13 inch late 2008 model, Mac OS X (10.7)
I had exactly the same issue!! 100% CPU on Safari Web Content. the site causing it was an oxford university Mirror hosting site.. I reset safari.. nothing. I formatted my HDD and clean installed mavericks. opened safari with just my Apple ID registered... nothing changed! after a minute or 2 it was 100 % again.. spoke to many tech guys and nobody could figure out what it was!
I was sat at my mac this morning making another Install USB for mavericks and decided to clean up my bookmarks and reading list entries..
There it was!! An XBMC download link in my reading list!! Deleted it and PROBLEM IS SOLVED!!
This has done my head in for a few weeks! been using google chrome ever since! ive now deleted it and i hope this can help others figure out the issues with their own machines!!
Hope this helps you guys!!!
Stuart
i am thinking of the revert back as well, the way as it is right now is just plain unusable. Frustrating and annoying
Great to hear. Please let us know here if you figure out which extension(s) were causing the CPU ramp. Also, would be helpful to contact the developer.
I was having these same issues of sluggishness after installing Lion. Since disabling Ad Blocker, things are running much smoother. Thanks for the tip.
Jeff
Uninstalling extensions seems to have worked for me too. Safari's memory footprint is much smaller now. Thanks for the tip!
To get Safari Web Content under control, I had to close all window and restart Safari.
Clear history, restart Safari, and you get your memory back. I'll do this till Apple fixes it with an update.
If you have Rapport, from Trusteer, installed- that could be your problem. It was on mine. Seems many people are having the same problem with this software.
This problem is not an extension thing. If you remove all your extensions it still happens routinely.
I'm experiencing the same Safari CPU problems. I have no extensions. I have checked plugins and removed all but a handful.
Lets hope this problem is fixed soon.
I've uninstalled Flash player and all is right with the world....except where Flash player is required....
Well, that's interesting, because I find using Chrome to be much worse than Safari, the RAM usage runs up much quicker, and there are some threads on their help forum documenting this issue...
Experienced the same problem.
Just deactivate the google service WEB GL in Safari's Developer Menu - and the problem is gone.
Ulrich
Responding to question as to how it is possible to have >100% CPU usage: You have multiple CPUs. If you have 4 CPUs, then (theoretically) you could achieve up to 400% CPU usage.
Safari Web Content high CPU usage
