Questions and Answers : Preferences : Why does the screensaver spend too % of CPU time ?
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Stana

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Message 18701 - Posted: 13 Dec 2007, 12:35:43 UTC
Last modified: 13 Dec 2007, 12:36:44 UTC

The screensaver is really nice.
But why does he on my PC spend so much CPU time?
I think that screensavercan cann take more than 80% of CPU time and only 20% left for computing.
Is it possible ???
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Message 18709 - Posted: 15 Dec 2007, 20:26:22 UTC

That is the trade off between running the BOINC project screen saver, or switching to the the 'blank' screen saver.

Any sceen saver is going to take time away from the actual project calculations; and this time can be very significant. This is way a lot of serious BOINC crunchers will switch the screen saver to the 'blank' one. There are those people who run BOINC for the graphics, in which case they accept reduced work unit availability.


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Message 18714 - Posted: 16 Dec 2007, 18:25:34 UTC - in response to Message 18701.  

The screensaver is really nice.
But why does he on my PC spend so much CPU time?
I think that screensavercan cann take more than 80% of CPU time and only 20% left for computing.
Is it possible ???

You need a decently-good (no need for very high-end) graphics card. If your graphics card doesn't have the 3D acceleration needed, all the 3D stuff will be emulated by your CPU instead.

Even with a good gfx card, the screensaver will *always* use *some* extra CPU, so computation will be slower than without the screensaver.
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Message 18717 - Posted: 16 Dec 2007, 21:23:04 UTC - in response to Message 18709.  

That is the trade off between running the BOINC project screen saver, or switching to the the 'blank' screen saver.

Any sceen saver is going to take time away from the actual project calculations; and this time can be very significant. This is way a lot of serious BOINC crunchers will switch the screen saver to the 'blank' one. There are those people who run BOINC for the graphics, in which case they accept reduced work unit availability.


Yes, i wont the screensaver, but not, when it takes too CPU time :(
I think the problem ist really VGA, GeForce4 MMX 440 is not latest model :(

I am sad, that i will have to run LHC without sceen saver .... :(
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Questions and Answers : Preferences : Why does the screensaver spend too % of CPU time ?


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