Re: [R] Meaning of proc.time()

-Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Christofer Bogaso Sent: Thursday, July 29, 2010 7:51 AM To: jim holtman Cc: r-h...@stat.math.ethz.ch Subject: Re: [R] Meaning of proc.time() Ok, but what are user CPU

Re: [R] Meaning of proc.time()

Ok, but what are user CPU and system CPU? If I know corrrectly, I only have a single CPU in my system. It is not a multi-corer system. Should I read that, system CPU time is the time that my CPU took for actual calculation, and the user CPU time is the time that my CPU took to analyze my code that

[R] Meaning of proc.time()

If I run proc.time() function, I would get following: proc.time()    user  system elapsed    2.82    4.18  792.39 However I am struggling the meaning of the object what it returned. In help file it says that: user time is the time required to execute the calling process. Here what is the

Re: [R] Meaning of proc.time()

This is reporting on the accumulated values of the user CPU, system CPU and elapsed time. The 'user + system' values indicate how much CPU has been used to process whatever has occurred in the R session so far. To get the time to execute a statement, or block of code, you can use 'system.time'