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  1. #1

    Sawday's Avatar
    Member Since
    Nov 19, 2006
    Location
    York, UK
    Posts
    1,245
    Specs:
    iMac: 24" Aluminium, 2.8 GHz, 4Gb RAM. iPad2, iPad mini2, iPhone5s
    Firefox taking over CPU and very slow.
    For several days Firefox has crashed on me many times and is now running exceedingly slowly. I notice that that Activity Monitor is showing Firefox as often using in excess of 100% of CPU (103-107%). Is this normal and could it have anything to do with the constant crashes?

    Activiry Monitor is also showing Page ins at 1.85GB, Page outs 107.9Mb, Swop used 132.3Mb. This 4GB iMac was last rebooted just 8 hours ago? Is this a sign that something is wrong too?
    Experience teaches you to recognise a mistake when you make it again.

  2. #2

    cradom's Avatar
    Member Since
    Feb 14, 2004
    Location
    Groves, Texas
    Posts
    4,473
    Specs:
    21in. iMac 10.11 --- HP win 10
    Try clearing the caches...Tools/Clear recent History.
    Always listen to experts. They’ll tell you what can’t be done and why. Then do it!
    -Lazarus Long

  3. #3

    jram's Avatar
    Member Since
    Apr 08, 2005
    Posts
    472
    Try disabling all your extensions, then enable one at a time until you find the one causing the spike.

  4. #4

    Sawday's Avatar
    Member Since
    Nov 19, 2006
    Location
    York, UK
    Posts
    1,245
    Specs:
    iMac: 24" Aluminium, 2.8 GHz, 4Gb RAM. iPad2, iPad mini2, iPhone5s
    Quote Originally Posted by cradom View Post
    Try clearing the caches...Tools/Clear recent History.
    Done that - no effect.
    Experience teaches you to recognise a mistake when you make it again.

  5. #5

    Sawday's Avatar
    Member Since
    Nov 19, 2006
    Location
    York, UK
    Posts
    1,245
    Specs:
    iMac: 24" Aluminium, 2.8 GHz, 4Gb RAM. iPad2, iPad mini2, iPhone5s
    Quote Originally Posted by jram View Post
    Try disabling all your extensions, then enable one at a time until you find the one causing the spike.
    OK. Had Download helper 4.9.5 and two others local to the UK. Will see if this settles things down and add back and also report back. Thanks for the info.
    Experience teaches you to recognise a mistake when you make it again.

  6. #6

    cradom's Avatar
    Member Since
    Feb 14, 2004
    Location
    Groves, Texas
    Posts
    4,473
    Specs:
    21in. iMac 10.11 --- HP win 10
    Also make sure all your plugins are up to date...flash, java, etc.
    Always listen to experts. They’ll tell you what can’t be done and why. Then do it!
    -Lazarus Long

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