[RFC] New feature: --batch to accept command sequences from stdin (or file)

[Michael Ellerman]

On 6/22/06, Diwaker Gupta <diwaker.lists at gmail.com> wrote:
> > Originally I was more thinking the language interpreter startup time,
> > which I expected to be the problem. In PII 400Mhz/512M/W2k/Cygwin this
> > command
> >
> >    $ time python -c "exit;"
> >
> > takes average of 1.5 sec (real). To run 3 commands in series, it would
> > take total:
>
> Yikes! On all of my boxes, this takes roughly 100 times less. What
> _is_ the configuration of your machine?
>
> >     1.5 x 3
>
> If you run these commands right after one another, I'm not sure the
> time grows linearly. A lot of the runtime files may be available in
> the file buffer cache. Disk locality might speed up further reads. I
> know thats really not the problem here, but I just wanted to clarify
> this particular point.

For example:
$ time python -c "exit"

real    0m1.462s
user    0m0.013s
sys     0m0.010s
$ time python -c "exit"

real    0m0.018s
user    0m0.012s
sys     0m0.004s

cheers