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Finder is maxing out my CPU - what could be happening?
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Forum Regular
Join Date: May 2005
Location: Somewhere they can't find me
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For a while now I have noticed this strange phenomenon. I have a menu bar extra which shows CPU usage as a percentage, and frequently it sticks at 100%. This is not with any heavy app activity going on, and it doesn't wobble around at all from 100%, it just sticks there. Activity Monitor shows what is happening - any spare CPU not being used by system events or whatever is immediately used by Finder. The record so far is 86.1%! Even if I close any open apps this doesn't change anything, except the Finder CPU use goes up! There are only a handful of icons on the desktop, Finder isn't doing anything particularly, it only registers 3 threads, so what the hell is it using all the CPU for?
If I quit Finder, then restart it, the problem goes away, Finder just takes between 5% and 15%, but after a while the same thing occurs, and the CPU is stuck at 100% again. Any ideas? 
iMac G4800, 768 ram, 10.3.9. btw.
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"Believe nothing, no matter where you heard it, or who has said it, not even if I have said it, unless it agrees with your own reason and your own common sense."
Buddha
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Professional Poster
Join Date: Jan 2002
Location: London, UK
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What system hacks are you using and do you have anything installed in either ~/Library/Input Managers or ~/Library/Contextual Menu items (also check the same folders in your /Library/ folder)?
It could be an incompatible contextual menu item or input manager, or it could be another incompatible system hack.
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Forum Regular
Join Date: May 2005
Location: Somewhere they can't find me
Status:
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Hello London! I'm in (self-imposed) exile here in the sunny Algarve... Beautiful climate, but I do miss the odd pint of London Pride or eight now and again...  Anyway, I did wonder whether it was a CM issue. Currently I have:
CalculateSizeCM
FinderIconCM
Nudge
PDFViewCM
QuickImageCM and
QuickPlayCM
I suppose the thing to do would be to remove them all then replace them one-by-one to see if that is the cause... They are so bloody useful though...
I only have SIMBL in Input Managers (need it for Pith Helmet) and that's been there for ages so it can't be that I rekon. Thanks for the tip, I'll try that out tomorrow.
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"Believe nothing, no matter where you heard it, or who has said it, not even if I have said it, unless it agrees with your own reason and your own common sense."
Buddha
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Professional Poster
Join Date: Jan 2002
Location: London, UK
Status:
Offline
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It could just as easily be SIMBL. Although it only functions in Safari (IIRC?) because it is an Input Manager it is loaded into all applications at launch time, which means it could cause issues with the Finder. As it is only one item, move it to e.g. the desktop and log out/back in (you have to do this to stop the SIMBL process completely). See if that solves the issue.
However, if it doesn't I would then start by temporarily moving all the CM items to one side (restart the Finder) and see if the CPU hogging still occurs.
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