GNU bug report logs - #12032
quasiquote is too slow

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: nalaginrut <nalaginrut <at> gmail.com>
Subject: bug#12032: closed (Re: bug#12032: quasiquote is too slow)
Date: Mon, 20 Aug 2012 08:58:02 +0000

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Your bug report

#12032: quasiquote is too slow

which was filed against the guile package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 12032 <at> debbugs.gnu.org.

-- 
12032: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=12032
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: ludo <at> gnu.org (Ludovic Courtès)
To: nalaginrut <nalaginrut <at> gmail.com>
Cc: 12032-done <at> debbugs.gnu.org
Subject: Re: bug#12032: quasiquote is too slow
Date: Mon, 20 Aug 2012 10:57:18 +0200

Hi, Nala,

nalaginrut <nalaginrut <at> gmail.com> skribis:

> Yes, Ludo, I realized that my measurement was little different:
> -----------code---------
> echo 6000 | ./v1.scm 1>/dev/null
> -----------end----------
> So I believe the delayed time caused by I/O.
>
> But I can't reproduce the measure data I provided now(both
> stable-2.0/wip-rtl), since it's been a while, I guess the later Guile
> got some promotion? And I can't remember the commit version I've tried
> (hmm...I should provide it). 

So I’m closing this bug for now.  However, feel free to reopen it, or
open another one, if you find the problem is still there.  But please,
make sure to reduce your benchmark as much as possible.

Thanks!

Ludo’.

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From: nalaginrut <nalaginrut <at> gmail.com>
To: bug-guile <at> gnu.org
Subject: quasiquote is too slow
Date: Mon, 23 Jul 2012 14:10:47 +0800

I think our quasiquote is too slow, here's an algorithm to test it.
1. quasiquote version:
https://gist.github.com/3148984
2. use list append to instead
https://gist.github.com/3148977

The input value is 6000.
v1 cost ~50s for me.
v2 ~16s.

But quasiquote is more elegant I think.

Regards.

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