GNU bug report logs - #12032
quasiquote is too slow

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

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Your message dated Mon, 20 Aug 2012 10:57:18 +0200
with message-id <87393ilz4h.fsf <at> gnu.org>
and subject line Re: bug#12032: quasiquote is too slow
has caused the debbugs.gnu.org bug report #12032,
regarding quasiquote is too slow
to be marked as done.

(If you believe you have received this mail in error, please contact
help-debbugs <at> gnu.org.)


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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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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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