| Activity monitor shows CPU running at 100% all the time.... [message #120285] |
Wed, 25 September 2013 08:54  |
spilrules
Messages: 12
Registered: September 2012
Karma: 0
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Junior Member |
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Recently I noticed the fan running at full speed for quite some time on my
G4 powerbook 12" 1.33 mhz which I thought was unusual as it did not seem to
run very long in the past. I checked the activity monitor under utilities
and discovered that the CPU was running at 100% all the time and the
activity monitor shows up all green in color. The computer works fine in
all ways except that the fan is running most of the time now to apparently
cool the processor....? I have checked it many times and even when the
computer is first turned on the activity monitor still shows the processor
at 100% and soon the fan will kick in. I ran the Apple hardware test on it
and everything passed. Is this a sign of impending doom? Should I stop
using it or reduce the amount of time it is running? Any advice is greatly
appreciated!
Thanks in advance for all who respond!
Tom
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| Re: Activity monitor shows CPU running at 100% all the time.... [message #120316 is a reply to message #120285] |
Thu, 26 September 2013 08:30  |
Valter Prahlad
Messages: 87
Registered: September 2012
Karma: 0
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Member |
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Il giorno 25/09/13 14.54, "spilrules" ha scritto:
> Recently I noticed the fan running at full speed for quite some time on my
> G4 powerbook 12" 1.33 mhz which I thought was unusual as it did not seem to
> run very long in the past. I checked the activity monitor under utilities
> and discovered that the CPU was running at 100% all the time
The most likely culprit is one (or some) active process(es), that you're not
aware of, that are CPU-heavy and using all the CPU power.
In Activity Monitor, click on the "% CPU" header, and check the topmost
processes (the ones using more CPU %): then report them here, so we can
understand what's going on.
> I have checked it many times and even when the
> computer is first turned on the activity monitor still shows the processor
> at 100% and soon the fan will kick in.
Usually, after boot there shouldn't be anything using more than 1-2% CPU.
(the computer is - should be - idle, actually)
> I ran the Apple hardware test on it and everything passed.
I don't think it's an hardware issue. The CPU do not keep busy himself, just
for the sake of it. ;-)
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| Re: Activity monitor shows CPU running at 100% all the time.... [message #120317 is a reply to message #120285] |
Thu, 26 September 2013 08:59 |
Valter Prahlad
Messages: 87
Registered: September 2012
Karma: 0
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Member |
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Il giorno 25/09/13 14.54, "spilrules" ha scritto:
> Recently I noticed the fan running at full speed for quite some time on my
> G4 powerbook 12" 1.33 mhz which I thought was unusual as it did not seem to
> run very long in the past. I checked the activity monitor under utilities
> and discovered that the CPU was running at 100% all the time
The most likely culprit is one (or some) active process(es), that you're not
aware of, that are CPU-heavy and using all the CPU power.
In Activity Monitor, click on the "% CPU" header, and check the topmost
processes (the ones using more CPU %): then report them here, so we can
understand what's going on.
> I have checked it many times and even when the
> computer is first turned on the activity monitor still shows the processor
> at 100% and soon the fan will kick in.
Usually, after boot there shouldn't be anything using more than 1-2% CPU.
(the computer is - should be - idle, actually)
> I ran the Apple hardware test on it and everything passed.
I don't think it's an hardware issue. The CPU do not keep busy himself, just
for the sake of it. ;-)
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You received this message because you are a member of G-Group, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs.
The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml
To post to this group, send email to g3-5-list@googlegroups.com
For more options, visit this group at http://groups.google.com/group/g3-5-list
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You received this message because you are subscribed to the Google Groups "G-Group" group.
To unsubscribe from this group and stop receiving emails from it, send an email to g3-5-list+unsubscribe@googlegroups.com.
For more options, visit https://groups.google.com/groups/opt_out.
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