Thanks. Shall I sum the user time and system time, which roughly equals to the elapsed time?
I also tried to improve the code by using 'cmpfun(myfunction)' in 'compiler' package, however, it doesn't help too much. Libo On Tue, Feb 21, 2012 at 8:11 PM, R. Michael Weylandt < michael.weyla...@gmail.com> wrote: > The time relationships aren't strictly linear between any of the three > measures, but *very generally* I've interpreted them as something > like: > > User: stuff you do (i.e., doing all the commands) > System: stuff at the OS level (memory allocations and whatnot) > Elapsed: Clock time > > None is a great measure in isolation, but the system time is not the > worrisome one here: it looks like your script takes about a day and a > half to run....that might be ok (and perhaps unavoidable) but it looks > like there might be value in trying to squeeze some speed out of your > script. A simple thing like byte-compiling that gives 2x speedup would > be huge here. > > Michael > > On Tue, Feb 21, 2012 at 10:06 PM, Libo Sun <libo...@rams.colostate.edu> > wrote: > > Hi all, > > > > I got this time for my code, > > > >> proc.time()-pt > > user system elapsed > > 132541.743 0.004 132533.526 > > > > As you can see, there is huge difference btw elapsed time and system > time. > > Does that mean lots of I/O? Or some bad coding? > > > > Thanks, > > Libo > > > > [[alternative HTML version deleted]] > > > > ______________________________________________ > > R-help@r-project.org mailing list > > https://stat.ethz.ch/mailman/listinfo/r-help > > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
