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Originally Posted by melanie_pfefer
cpu is 0% idle, that means it is heavy loaded. so that could be due to processes consuming all cpu. right?
Right. That's not necessarily bad, though. A system running at 100% CPU can still be quite responsive since CPU time is split relatively fairly among competing processes according to their priority levels. Two competing processes at the same priority level will split time 50/50... Or if they have different priority levels(see 'man nice' and 'man renice') the higher-priority process will get the majority of the time.
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100% idle means it is doing nothing... so that can be a dealock or a process hanging. right?
More likely the system just plain has nothing to do. Or you weren't looking at the right instant. Remember that most programs either start and finish in an instant, or sleep 99% of the time waiting for some sort of trigger. Unless the monitor updates at the exact right instant, you won't notice either.
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both of them (0 and 100%) are not a good sign. right?
Both of them are neither good nor bad in themselves. 100% CPU could just be somebody compressing a big file. 0% CPU could just mean the system has nothing to process at that particular instant.
