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From: "Dr. Arne Babenhauserheide" <arne_bab@web.de>
To: guile-devel@gnu.org
Subject: Re: FWD: Test reader speed of Guile 3.0.6 in Lilypond
Date: Thu, 18 Mar 2021 18:21:36 +0100	[thread overview]
Message-ID: <87tup8nzrz.fsf@web.de> (raw)
In-Reply-To: <87czvwj230.fsf@web.de>

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More tests were done by Thomas Morley, which also give a perspective on
the initial very negative reaction by the lilypond developers, as it
shows the abysmal speed that initial versions of Guile2-Lilypond
integration had.

Thomas Morley <thomasmorley65@gmail.com> writes:

> Am Fr., 12. März 2021 um 10:45 Uhr schrieb Thomas Morley
> <thomasmorley65@gmail.com>:
>>
>> Am Do., 11. März 2021 um 22:47 Uhr schrieb Dr. Arne Babenhauserheide
>
>> > Do you already have results?
>>
>> Currently my regular job eats up all my time.
>> Probably I'll find some free time at upcoming weekend, not sure though...
>> If so, to which guile-version should I compare, guile-1.8 (which is
>> still LilyPond-default) or a certain guile-2/3-version?
>
> Found some time today...
>
> I tested a huge ly-score, once sent by Jean-Charles for testing
> different guile-versions:
> https://lists.gnu.org/archive/html/lilypond-user/2016-11/msg00948.html
> Thanks again!
> I made it compilable with recent ly-master out of
> 55ca32d951dd17556df8d0332b861f0cd189379a
> (though I didn't fix all warnings and programming errors)
>
> Tested with these guile versions:
> guile-1.8.8 from tarball
> guile-2-2-6 out of a69b567d97f7c9193924c775e1dd86e43a35b8bd
> guile-3.0.6 from master, i.e. out of 85433fc2b122dc78342c3c83941949d1d9318399
> (although (version) says: 3.0.5.116-85433)
>
> There are some guile-warnings, multiple instances of:
> WARNING: (#{ g478}#): `smallCaps-markup' imported from both (lily) and
> (#{ g171}#)
> WARNING: (scm framework-ps): imported module (lily) overrides core binding `_'
> The latter one is about gettext and PITA.
>
>
> I compiled Urtext.ly from the tarball linked above (giving a 158 pages pdf):
>
> %%%%%%%%%%%%%%%%%%%%
> guile-1.8.8
>
> real    4m37,304s
> user    4m14,144s
> sys    0m7,717s
>
> %%%%%%%%%%%%%%%%%%%%
> guile-2.2.6, (version) says: 2.2.6.7-9a11b
>
> real    7m18,995s
> user    6m41,808s
> sys    0m11,960s
>
> eating much more memory than guile-1.8.8
>
> %%%%%%%%%%%%%%%%%%%%
> guile-3.0.6, (version) says: 3.0.5.116-85433
>
> real    5m49,587s
> user    5m11,033s
> sys    0m9,488s
>
> eating a little more memory than with guile-1.8.8 but far less than guile-2.2.6
> I tested _one_ huge file.
> In it there's some custom-code to deal with accented letters like in
> "éèêëáàâäíìîïóòôöúùûüçœæ", which guile-1 was not able to cope with in
> many cases.
> I think guile-2/3 does a better job in this regard.
> Btw, this is my strongest argument to switch to guile-2/3
> I could eliminate that code for guile-2/3 runs and take timing values again.
> Maybe it has positive impact.
> Interested? Has to wait for the weekend, though.
> 
> Otoh, adjusting small things in a small file like finding the needed value for
> \override Grob.X-offset = FINDME
> is a pain with guile-2/3 because of the already mentioned startup delay.
> The strongest argument against switching to guile-2/3, imho.
> %%%%%%%%%%%%%%%%%%%%
> %%%%%%%%%%%%%%%%%%%%
>
> Interestingly I found some older timing values from former tests:
>
> %%%%%%%%%%%%%%%%%%%%
> released lilypond-2.19.52 with guile-1.8.7
>
> real    8m16.191s
> user    6m39.864s
> sys    0m10.860s
>
> %%%%%%%%%%%%%%%%%%%%
> with guile-versions from 2.0.14 and 2.1.7 I noted:
>
> Best result was:
> real    25m17.082s
> user    31m1.668s
> sys    0m5.480s
>
> Worst result was:
> real    77m44.348s
> user    100m40.324s
> sys    0m18.932s
>
> Though, my noted former results are a little messy: I can't say
> anymore which guile-version with which lilypond-patches was
> best/worst.
>
> Anyway, both, LilyPond and guile seem to have improved a lot.

> A: Did you do these tests on the same machine?

> Yes, it was all on the same machine.
> Though, guile-2.0.12 was the first version with a _chance_ to compile
> LilyPond, iirc
> These early attempts used patches which nowadays are superseeded by
> far better ones.
> So while the machine is the same, LilyPond has become far better to
> deal with guile-2/3.
> I think those scary values are documenting where we started and are of
> historic interest, nothing more.

> Cheers,
>   Harm


-- 
Unpolitisch sein
heißt politisch sein
ohne es zu merken

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  reply	other threads:[~2021-03-18 17:21 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <878s6vaa7c.fsf@web.de>
     [not found] ` <CAOw_e7b8-AAROs4SrB+E=fG=ORDdjgG_AbcWW2ytS1tHHmAGdA@mail.gmail.com>
     [not found]   ` <87v99wf1n0.fsf@web.de>
     [not found]     ` <CAOw_e7ZxEWWU6mxJx2cNgb4nyjXnw8ZtYCa+Lp_k=-2WkSpGCg@mail.gmail.com>
2021-03-18  8:30       ` FWD: Test reader speed of Guile 3.0.6 in Lilypond Dr. Arne Babenhauserheide
2021-03-18 17:21         ` Dr. Arne Babenhauserheide [this message]
2021-04-11 21:32         ` Dr. Arne Babenhauserheide
     [not found] ` <f352b8c6-6a8b-4a6d-85ac-ec32cd33fc3a@t-online.de>
     [not found]   ` <e968a361-397e-8634-4521-ad1a4801b9de@gmail.com>
     [not found]     ` <cab2cdfa-6c45-c07e-8c5e-be3dde767281@t-online.de>
     [not found]       ` <CAGebFpKhKtQ2u6N2Le-fc1A4sp=9siHAbPkV4RCS6GOZ84YF+w@mail.gmail.com>
     [not found]         ` <11662b16-c4e3-6d48-7496-6914b35e9c8e@t-online.de>
2021-03-21  8:21           ` Fwd: Re: Test reader speed of Guile 3.0.6 Dr. Arne Babenhauserheide

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