Others have said what system time is, time spent in the kernel of the operating
system doing things on behalf of your program. Also, switching between user
and system mode can be time consuming, so the number of system calls can
be important, even if each one takes little time. I don't know how
On 20/10/2012 17:16, Mark Leeds wrote:
Hi : I looked at the help for system.time but I still have the following
question. Can someone explain the output following output
of system.time :
user system elapsed
12399.681 5632.352 56935.647
Yes, the help page can, via ?proc.time.
You asked several questions.
Elapsed: yes
User + System = CPU: yes
Finally: You have to look at the load and/or cpu core count. Unless you setup
your code to take advantage of multiple cores, R runs on a single core.
Also: Do you really need to ask that question?
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