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Fri 11 Sep, 2009 12:10 pm
This may be something you'd only see on older computers, but I doubt it...
I'm in the process of setting up an IBM R40 to my liking with Ubuntu 9.4 and I had the system monitor up along with several Firefox windows and I noticed CPU usage around 90%, and this is with a 2.2 gh processor and nothing really big running.
I closed Firefox and CPU usage (that is, the cpu usage graph on the performance tab of the sys monitor) was staying around 85%. I minimized the sys monitor and did a few other things and what I noticed when I brought the sys monitor up again a few minutes later was that the graph had been down around 45% for some time but went up again as I reopened the sys monitor.
In other words, the damned stupid thing was measuring ITSELF, i.e. producing that graph is what was spiking cpu usage...
Windows task manager does the same thing, sometimes. Usually, it's measuring the additional load due to graphics and/or graphing.
gungasnake wrote:In other words, the damned stupid thing was measuring ITSELF, i.e. producing that graph is what was spiking cpu usage...
I've never seen any program that measures resource use that did not itself use resources (and measure it). So that much is normal, and should be expected. The only thing weird about it is how much it happened to be using.
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