Displaying 1 result from an estimated 1 matches for "clocticks".
2008 Aug 28
1
locale2charset CPU overhead (PR#12633)
...OS: Windows XP SP2
Submission from: (NULL) (83.25.29.163)
Hello!
I have conducted following experiment running simple R script:
for (i in 1:10000) {
a<-0
for (j in 1:1000)
a<-c(a,j)
}
profiled R.dll using Intel Vtune and obtained following results!!!
Func. Name Clocticks
locale2charset 46,58%
R_RunWeakRefFinalizer 20,85%
Rf_eval 8,77%
Rf_eval takes only about 9% of CPU time, a huge overhead on checking
locale character set!!! It seems that is the problem with family of
functions: c(), rbind(), cbind()