You are measuring image startup time, not the actual code.
'bar.txt' asFileReference writeStreamDo: [ :out |
10000 timesRepeat: [ out << Character alphabet; crlf ] ].
[ 'bar.txt' asFileReference contents ] bench. "37.296 per second"
[ 'bar.txt' asFileReference contents ] timeToRun. "0:00:00:00.022"
So reading a 260Kb file is pretty fast.
Image startup is 0.5 seconds at best (headless, linux) in my experience.
> On 15 Mar 2015, at 22:34, stepharo <
[hidden email]> wrote:
>
> Nicolas asked me the following questions and I was stuck :)
>
> Stef
>
> I have been doing some file intensive activities and found my program to be very slow.
> Just to be sure I ran them in Java and found it was much faster
>
> So I did a small test:
> ---
> i := 0.
> '/home/anquetil/Documents/RMod/Tools/workspace/Blocks/jfreechart-0_9_0.mse' asFileReference readStream contents do: [ :c | i:= i+1].
> ---
>
> 10 times with TimeProfiler : 14.436 sec
> 10 times as a script passed to pharo-vm-nox (latest 4.0 image) : 16.07 sec
>
> similar thing (as far as I can tell) 10 times in java: 1.482 sec.
> ---
> public static void main(String[] args) {
> int length =0;
> try {
> String filename = "/home/anquetil/Documents/RMod/Tools/workspace/Blocks/jfreechart-0_9_0.mse";
> String content = new String(Files.readAllBytes(Paths.get(filename)), "UTF8");
> for (int i=0; i < content.length(); i++) {
> content.charAt(i);
> length = length+1;
> }
> } catch (IOException e) {
> e.printStackTrace();
> }
> System.out.println(length);
> }
> ---
>
> is this known ? normal?
>
> nicolas
>
> PS: time for java and pharo script or measured as:
> $ for i in 1 2 3 4 5 6 7 8 9 10; do time run-experiment; done
>
>
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