On Mon, Jun 29, 2009 at 06:56:55PM +1200, Patrick Connolly wrote: > On Mon, 29-Jun-2009 at 02:13AM -0400, milton ruser wrote: > > |> Really? > |> > |> In fact I have a quadcore. But how can I know if Linux are really > |> using only one core, and how can I setup it to use the 4cores? > > I use GKrellM (install with "aptitude install gkrellm" if you don't > have it already). It shows a trace of the % activity for each CPU > where it's very clear if only one is being used. I've never had > occasion to change such a setting, but someone more skilled in such > things could say how to make it use more than one. > How do you know that it is *R* that uses all 4 CPUs, and not other applications on the system? What does running "top" in the terminal say? If R uses more than one CPU, it's CPU usage will be > 100%.
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