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Thread: Snow Leopard Halloween "Trick:" SystemUIServer >90% CPU Reported

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If you were, like me, using your Mac late on Hallowe'en night, you may have noticed your fan kick in at about the time the clock did its "fall back"
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    MMi Staff Writer Paul Daniel Ash's Avatar
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    Default Snow Leopard Halloween "Trick:" SystemUIServer >90% CPU Reported


    If you were, like me, using your Mac late on Hallowe'en night, you may have noticed your fan kick in at about the time the clock did its "fall back" from Daylight Savings Time. Many users did, and lit up Apple's Support boards for the hour until it was finally 1:59:59 again in their particular time zone, when most everybody's fans quieted down. Users noticed that the SystemUIServer process took up from 90 - 100% CPU usage, with some reporting launchd and syslogd also stressing the processor.

    A workaround was discovered, which was simply to turn the menu bar clock off momentarily. However, since the high usage level generally went away at 2am, with the overwhelming majority of users probably having missed the whole event, the workaround was unneeded for most.

    One helpful user in the threads did a sample in Activity Monitor and noted "CFAbsoluteTimeAddGregorianUnits" coming up frequently in SystemUIServer. There was disagreement over whether the bug was an understandable oversight or sloppy programming. The problem does, however, seem to have come and gone. Anyone seen any lasting effects?

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    "iDoThis" Alpha xxfr0stbytexx's Avatar
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    haha nice. that doesnt happen on windows
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    im a pc, and your a mac...

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    iPhoneaholic plcrules's Avatar
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    o and if ur mac went 2 sleep at 2 am the cpu would b stressed all night
    it happened 2 me


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    happened to me, the right side was at 90% so I shut it down.


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    Livin the iPhone Life rhekt's Avatar
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    had my macpro turned off for the first time in 3 weeks...just didnt feel like using it so i surfed on my iphone. dodged a bullet i guess...[err rubber bullet]
    Last edited by rhekt; 11-01-2009 at 02:42 PM.
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    I had both of my Macs on but didn't notice anything. Though I wasn't using the one at the time and was watching a movie on the other.
    21.5" iMac 3.06 GHz Intel Core i3 l 15" MacBook Pro 2.2 GHz Intel Core i7 l 17" PowerBook 1.67 GHz
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    Quote Originally Posted by xxfr0stbytexx View Post
    haha nice. that doesnt happen on windows
    yea instead of locking up once a year, windows locks up several times a day


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    iPhone? More like MyPhone zwaldowski's Avatar
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    I was wondering what the hell was going on. For the record, MPlayer OS X Extended handles screwed-up SystemUIServer CPU sucking better than VLC does.

    Now, even though I'm hopelessly devoted to OS X, this brings up a question: can we as a technological society STILL not manage time switching properly on computers? That'd be like having a 2K10 problem, ridiculous!

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    My iPhone is a Part of Me rwin84's Avatar
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    very weird...
    This is getting a lil' ridiculous...

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    Quote Originally Posted by StealthBravo View Post
    yea instead of locking up once a year, windows locks up several times a day
    maybe you should stop running windows me. I haven't had a lockup in windows in years.

    And guess it goes to show that even changing the clock for dst is a hard job for mac os.

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    iPhone? More like MyPhone
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    Quote Originally Posted by GmAz View Post
    maybe you should stop running windows me. I haven't had a lockup in windows in years.

    And guess it goes to show that even changing the clock for dst is a hard job for mac os.
    If your PC hasn't locked up in years, YOU'RE DOING IT WRONG!

    (P.S. i have a pc.)

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    my pc hasnt locked up in years.. oh wait ever since i got a gf and stopped watching the virus giving videos on the internet.... hahahahaa

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    Green Apple djnikk's Avatar
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    Quote Originally Posted by Silv3r View Post
    my pc hasnt locked up in years.. oh wait ever since i got a gf and stopped watching the virus giving videos on the internet.... hahahahaa
    hehehe dido that!
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    iPhone? More like MyPhone
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    Originally Posted by GmAz
    maybe you should stop running windows me. I haven't had a lockup in windows in years.

    And guess it goes to show that even changing the clock for dst is a hard job for mac os.
    LOL. If you haven't notice (of course you haven't, your ignorant) Mac OS X does DST automatically and automatically adjusts the clock to the computers position in the world.

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    Green Apple
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    I have a PC and a MAC. Oh and NO it's not a MAC with Windows bootcamp. I use both and neither is better than the other one. However, my PC is faster than my MAC. And Windows 7 rocks!

  19. #17
    What's Jailbreak? reveritt90's Avatar
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    easy killers theres enough mac vs pc threads

    i noticed this didnt really think anything of it it was werid fan was in full power making a lot of noise
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  20. #18
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    apple will tell you that it's not a reproducible bug and that it's an isolated incident!

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