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Flash video causing 105% CPU usage spikes

118203 Views 215 Replies Latest reply: Mar 15, 2010 11:36 PM by macalicious RSS
  • songallery Level 1 Level 1 (0 points)
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    Oct 30, 2009 8:39 AM (in response to FaZe)
    NO DOUBT.
    OSX 10.6 + Safari problem.
    When I upgrade 10.6 from 10.5 on same machine, I see a big difference on flash player performance under same full screen flash website.
    Use another browser would solve the problem.
    It doesn't related to new iMac, it is related to the safari, I have lot of mac here have the same problem including MacPro 8core.
    MacPro 09 8core, iMac 24", MBP 17", MB C2D, Mac OS X (10.6.1)
  • Lightfoot13 Calculating status...
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    Oct 30, 2009 9:43 AM (in response to FaZe)
    These are the two graphics configurations offered on the Apple website:

    27-inch model with dual-core processor, one of the following:
    ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory
    ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory

    27-inch model with quad-core processor:
    ATI Radeon HD 4850 graphics processor with 512MB of GDDR3 memory

    Do we know which ones are causing problems?
    iMac, Mac OS X (10.6.1)
  • Tuxtur Calculating status...
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    Oct 30, 2009 10:10 AM (in response to Lightfoot13)
    I have the problem, am running 27" iMac with
    ATI Radeon HD 4670 graphics processor with 256MB of GDDR3 memory

    In response to the user that suggests we might think of turning our Activity Monitor on to see what's causing the problem: We have, that's how we (and Apple) know the problem is Flash. We're not just 'blindly guessing'.

    I have run the tests that AppleCare asked me to. All resulted in CPU spikes that were 100% or more:
    Using Safari in 32 bit with my normal User
    Using another browser with my normal User (Firefox, Camino)
    Using Safari in both 64 and 32 bit in a Test User

    I have not yet tried turning Airport off and back on to stop the spiking. I haven't had a spike since I read that post. After I do, I will be alerting AppleCare of that also.
    27" duo iMac, Mac OS X (10.6.1)
  • The hatter Level 9 Level 9 (58,535 points)
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    Oct 30, 2009 10:35 AM (in response to GizaDog)
    There is a thread Mac Pro: iTunes or Audio increases cpu temperature causing the 2009 Nehalem Mac Pros (+not earlier model+) to suffer from high cpu usage (and heat). Also similar problems with Flash. A spike in cpu is normal with Hyper-threading and any Core i7 (and probably i5) even with Windows 7, but only momentarily. Instead, it doesn't operate or behave as expected.

    I'd check your audio apps and iTunes as well.
    Mac Pro 8800GT 10K VelociRaptor, Mac OS X (10.6.1), Windows 7 i7 3.2GHz GTX 260-216
  • Chuck Bragg Level 1 Level 1 (0 points)
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    Oct 30, 2009 10:52 AM (in response to Tuxtur)
    I did further testing and found once the problem occurs, I can quit safari and either start itunes or even photo booth and get 100% utilization or higher on one of the two cores. I found the trick that someone else mentioned about turning off airport to in fact return the two cores to normal operation. I can't tell you how the airport is connected to all this but it does return the cpu to its normal state. Flash video may trigger the problem but from that point forward it affects other programs, at least on my 27 iMac...
    27" iMac 3.06, Mac OS X (10.6.1)
  • Livslufsen Level 1 Level 1 (0 points)
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    Oct 30, 2009 10:56 AM (in response to FaZe)
    I just got a mail from someone claiming to be from ApleCare who supposedly is looking into this issue. He asks me to download a file he has attached in the mail - 'CaptureData8.4.1.dmg', which allegedly is going to collect various data from my computer. After having run the application I'm asked to email the dmg back to him.

    Has anyone else got this? Is it legit? Sounds a bit odd to me.

    Thanks,
    R.

    Message was edited by: Livslufsen
    iMac 21.5 3.06 HD4670, Mac OS X (10.5)
  • Tuxtur Level 1 Level 1 (0 points)
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    Oct 30, 2009 11:20 AM (in response to Livslufsen)
    Livslufsen: I checked with my AppleCare guy... the request for "Capture Data" is legit. I received it also.
    27" duo iMac, Mac OS X (10.6.1)
  • Livslufsen Level 1 Level 1 (0 points)
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    Oct 30, 2009 11:21 AM (in response to Tuxtur)
    Thanks for the info. I've now done what was asked and we'll see what happens.

    Thanks again,
    R.
    Macbook Pro, Mac OS X (10.5), 2.4 SR 15"
  • Tuxtur Level 1 Level 1 (0 points)
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    Oct 30, 2009 12:17 PM (in response to Livslufsen)
    Airport is looking to be an important player in this scenario... Thanks to the user that suggested turning it off and back on to stop the spike. That works for me. Nicer than waiting for sleep and wake cycle.
    27" duo iMac, Mac OS X (10.6.1)
  • Gehad Calculating status...
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    Oct 30, 2009 12:39 PM (in response to FaZe)
    Has anyone thought of reinstalling from a retail copy of snow leopard? If indeed it's a software issue maybe reinstalling from the retail cd would do the trick. Afterall it may be a bad image out of Apple.
    iMac 27", MBP, Mac OS X (10.6.1)
  • William Maxwell Calculating status...
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    Oct 30, 2009 12:45 PM (in response to Tuxtur)
    For affected 27 inch iMac users, please try these 2 workarounds and let me know if they do not work:

    1, Connect your 27 inch iMac to your network via Ethernet and then turn off your iMac's AirPort by selecting "Turn AirPort Off" from the AirPort menu.

    2, During a CPU spike, power cycle your iMac's airport by selecting "Turn AirPort Off" from the AirPort menu and then power it on by selecting "Turn AirPort On" from the airport menu. Repeat this workaround whenever the CPU spikes.

    Thanks.
    Mac Pro, Mac OS X (10.6)
  • rhyceudique Calculating status...
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    Oct 30, 2009 12:49 PM (in response to William Maxwell)
    I can't do solution #2, but here's my report of #1.

    Power-cycling the Airport causes the Flash utilization to drop ( to about 45%) and the playback (at small sizes) is smooth. However at *full screen* the playback is still choppy and the utilization is still quite high ~ 80%.
    Powerbook G4, Intel iMac 20", MBP 17", Dual G5 Tower, iPhone, Mac OS X (10.6.1)
  • William Maxwell Level 1 Level 1 (90 points)
    Currently Being Moderated
    Oct 30, 2009 12:56 PM (in response to rhyceudique)
    Workaround number 2 seems to reset things, but it does not resolve the issue. I would advise you to refrain from playing video back at full screen while the iMacs airport is on.
    Mac Pro, Mac OS X (10.6)
  • William Maxwell Level 1 Level 1 (90 points)
    Currently Being Moderated
    Oct 30, 2009 1:09 PM (in response to FaZe)
    You can always extend your wireless network with a AirPort base station. Then connect your 27 inch iMac to that AirPort base station via Ethernet. This can enable workaround 1 without the need to run cable. Just FYI.
    Mac Pro, Mac OS X (10.6)
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