----- Original Message -----
From: "David Kastrup" <d...@gnu.org>
To: "Phil Holmes" <m...@philholmes.net>
Cc: "James" <pkx1...@gmail.com>; <lilypond-devel@gnu.org>
Sent: Saturday, September 21, 2013 2:12 PM
Subject: Re: Lilypond benchmarking
"Phil Holmes" <m...@philholmes.net> writes:
2.12 - 162 pages; 2.14 - 147; 2.16 - 142; 2.17.26 - 158pp. 2.17 is
noticeably looser, but I concluded I'd adjust some of the spacing
controls to fit more to a page.
That's actually a real problem. Now 2.17.27 will have some padding
significantly reduced (halved?) if I understand Keith correctly, so we
should get some pages more out.
If I remember correctly, the skyline code made it desirable to increase
some paddings to avoid jamming things too closely.
And also if I remember correctly, the page break decisions do _not_ make
use of skylines. Instead, skylines are only used for spreading out the
page _after_ pagebreaking, so the net result will be more pages rather
than fewer.
I may have understood something wrong here. However, if my
understanding is _not_ mistaken here, I think we should not release 2.18
before we have integrated the interstaff positioning using skylines into
the page breaking decisions.
And of course, the distance between two successive skylines should be
measured _once_ at most. It probably needs to become a part of vertical
spacing rods or something.
--
David Kastrup
I've done quite a bit of work trying to see what's going on and have
discovered that something introduced between (I think) 2.17.18 and 2.17.19
has affected how lily determines whether it can fit another system in. With
ragged-bottom set and annotate spacing, on one of my scores 17.19 shows
49.07 space left and the next system having an extent of 44.7. Despite that
it puts that system on the following page. The earlier version fits it in,
albeit with the complaint "warning: cannot fit music on page: ragged-spacing
was requested, but page was compressed". Without ragged-bottom, that
complaint is not there.
Bisecting.
--
Phil Holmes
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