User time and system time
Peter Dalgaard BSA
05 Mar 1998 22:24:56 +0100
Douglas Bates <firstname.lastname@example.org> writes:
>  1.09 288.05 289.00 0.00 0.00
> I can't really believe that it took only 1 second of user time and 288
> seconds of system time. It didn't even do garbage collection in R (I
> had gcinfo(T) set) and it wasn't swapping.
Does sound a bit extreme...
Could you be experiencing either libc code implemented as syscalls or
an effect of Linux's (mis?)feature of overcommitted memory (i.e. you
do a malloc, but all you really get is a bunch of virtual pages that
has to get cleaned when you access them the first time.
(Just talking through the top of my head, in case you didn't notice
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