Safari Web content generate 99% CPU usage

Report · May 04, 2016

Hi There,

I've experienced a problem with the use of safari on my new Macbook pro 13. One safari was running, a process gets stuck and generate a usare of 99% CPU and in some cases a total kernel crash. Once in the apple store they've told me that it was linked to Adoble Flash player and i had to remove it. Now, i'm not using the plugin anymore, but clearly i need it for some video stream. I've looked in the Flash Player 21 Release Notes and found this :

April 21, 2015

In today's release, we've updated Flash Player NPAPI for OSX to resolve a bug that was impacting certain Mac video cards.

Does this mean you've solved the problem?

Here you find the port and opened file of the blocked process:

/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc

/System/Library/Frameworks/WebKit.framework/Versions/A/XPCServices/com.apple.WebKit.WebContent.xpc/Contents/MacOS/com.apple.WebKit.WebContent

/System/Library/Frameworks/WebKit.framework/Versions/A/WebProcess.app/Contents/MacOS/WebProcessShim.dylib

/usr/share/icu/icudt55l.dat

/System/Library/CoreServices/SystemAppearance.bundle/Contents/Resources/SystemAppearance.car

/private/var/folders/l8/vyxvkx994d11l5_myvz4vv8c0000gn/0/com.apple.LaunchServices-134501.csstore

/System/Library/Keyboard Layouts/AppleKeyboardLayouts.bundle/Contents/Resources/AppleKeyboardLayouts-L.dat

/private/var/db/mds/messages/se_SecurityMessages

/Applications/Safari.app/Contents/Resources/Safari.wkbundle/Contents/MacOS/Safari

/System/Library/PrivateFrameworks/WebContentAnalysis.framework/Versions/A/WebContentAnalysis

/System/Library/Fonts/SFNSText-Regular.otf

/System/Library/Extensions/AppleIntelBDWGraphicsMTLDriver.bundle/Contents/MacOS/AppleIntelBDWGraphicsMTLDriver

/System/Library/Fonts/SFNSDisplay-Regular.otf

/System/Library/Fonts/Times.dfont

/Library/Fonts/Verdana.ttf

/Library/Fonts/Verdana Italic.ttf

/Library/Fonts/Verdana Bold.ttf

/Library/Fonts/Verdana Bold Italic.ttf

/System/Library/CoreServices/SystemAppearance.bundle/Contents/Resources/Assets.car

/Library/Fonts/Tahoma.ttf

/Library/Fonts/Tahoma Bold.ttf

/System/Library/Frameworks/JavaScriptCore.framework/Versions/A/Libraries/libllvmForJSC.dylib

/usr/lib/dyld

/private/var/db/dyld/dyld_shared_cache_x86_64h

/dev/null

count=2, state=0x12

/System/Library/CoreServices/SystemAppearance.bundle/Contents/Resources/SystemAppearance.car

FNetwork.defaultStorageSession

/dev/random

/System/Library/CoreServices/SystemAppearance.bundle/Contents/Resources/Assets.car

FNetwork.defaultStorageSession

Report · May 04, 2016

The fastest way to figure that out would be to install Flash Player and see what happens.

You can always uninstall it again if the problem persists.

Uninstall Flash Player - Mac:

https://helpx.adobe.com/flash-player/kb/uninstall-flash-player-mac-os.html

Adobe Community

Safari Web content generate 99% CPU usage