So Perl6 is a lot like Python in that modules get compiled to byte code making them a lot faster to parse the second time around.
If you're running a 6000 line script then a lot of time is going to be spent parsing your script every time you run it. If you instead take all your script code and pop it into a module and have a script along the lines of : use lib "./"; use System; System::start(); (Where your module code is called System.pm6 and start is the entry point subroutine). I think you'd find this improves the speed of the script significantly. On Mon, 6 Aug 2018 at 10:38 ToddAndMargo <toddandma...@zoho.com> wrote: > On 08/06/2018 02:07 AM, ToddAndMargo wrote: > > On 08/06/2018 01:02 AM, Simon Proctor wrote: > >> Sorry I wrote my earlier email on my phone without a computer to hand. > >> Here's a quick rundown on what I'm talking about. > >> > >> --stagestats gives you the breakdown on how much time is spent doing > >> various steps (note that using time instead of date; date gives you a > >> better timing of how long something took. > >> > >> time perl6 --stagestats -e "" > >> Stage start : 0.000 > >> Stage parse : 0.089 > >> Stage syntaxcheck: 0.000 > >> Stage ast : 0.000 > >> Stage optimize : 0.001 > >> Stage mast : 0.004 > >> Stage mbc : 0.000 > >> Stage moar : 0.000 > >> > >> real 0m0.144s > >> user 0m0.155s > >> sys 0m0.032s > >> > >> And generally that's going to be the case for most short programs, in > >> these cases especially moving to having the core of your code in > >> modules with give you a speed boost. > >> > >> Sorry if my comments earlier were unhelpful. > >> > >> Simon > >> > >> On Mon, 6 Aug 2018 at 08:56 ToddAndMargo <toddandma...@zoho.com > >> <mailto:toddandma...@zoho.com>> wrote: > >> > >> >> On Sun, 5 Aug 2018, 23:45 Elizabeth Mattijsen, <l...@wenzperl.nl > >> <mailto:l...@wenzperl.nl> > >> >> <mailto:l...@wenzperl.nl <mailto:l...@wenzperl.nl>>> wrote: > >> >> > >> >> > On 1 Aug 2018, at 20:14, ToddAndMargo > >> <toddandma...@zoho.com <mailto:toddandma...@zoho.com> > >> >> <mailto:toddandma...@zoho.com > >> <mailto:toddandma...@zoho.com>>> wrote: > >> >> > Is it just me or does Perl 6 take about three times as > >> long to > >> >> > start up as Perl 5? I do have a very fast machine and it > >> takes > >> >> > about seven see for some of my Perl 6 stuff to get past > >> the > >> >> > ruminating phase and start running. > >> >> > >> >> Seven seconds? Seven? That seems *very* long indeed. > >> >> > >> >> How long does it take to do: > >> >> > >> >> perl6 -e ‘’ > >> >> > >> >> ? That should be in the order of 130 msecs. If that’s the > >> case, > >> >> then you’re probably doing a lot of grammar changes to Perl > >> 6. But > >> >> without the actual code, this remains guessing. > >> >> > >> >> > >> >> > Any workaround for this, or is this just growing pains > >> for Perl 6? > >> >> > >> >> Not sure :-) > >> >> > >> >> > >> >> > >> >> Liz > >> >> > >> >> -- > >> >> Simon Proctor > >> >> Cognoscite aliquid novum cotidie > >> > >> On 08/05/2018 10:57 PM, Simon Proctor wrote: > >> > Have you tried running with --stagestats which gives you a break > >> down of > >> > where the time is being spent? > >> > > >> > On thing is if you are running large script files it came take a > >> while. > >> > Moving your code into modules, which get precompiled can give a > >> > significant speed boost. > >> > >> Does this tell you anything? > >> > >> $ curl --fail --head https://google.com; echo $? > >> HTTP/2 301 > >> location: https://www.google.com/ > >> content-type: text/html; charset=UTF-8 > >> date: Mon, 06 Aug 2018 05:19:51 GMT > >> expires: Wed, 05 Sep 2018 05:19:51 GMT > >> cache-control: public, max-age=2592000 > >> server: gws > >> content-length: 220 > >> x-xss-protection: 1; mode=block > >> x-frame-options: SAMEORIGIN > >> alt-svc: quic=":443"; ma=2592000; v="44,43,39,35" > >> > >> 0 > >> > >> -- > >> Simon Proctor > >> Cognoscite aliquid novum cotidie > > > > real 0m14.580s > > user 0m13.723s > > sys 0m0.418s > > > The program is 6160 line long plus a bunch of imported > modules. > > The Perl 5 version of this program that starts three > times faster is 6354 lines long plus a bunch if imported > modules. > > The slow start is not a reason to go back to p5 for > any reason. It would just be nice if it started faster. > -- Simon Proctor Cognoscite aliquid novum cotidie
