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Issue 1926 in lilypond: 2.15.12 processing speed problems


From: lilypond
Subject: Issue 1926 in lilypond: 2.15.12 processing speed problems
Date: Sat, 24 Sep 2011 10:43:13 +0000

Status: Accepted
Owner: ----
Labels: Type-Critical Regression

New issue 1926 by address@hidden: 2.15.12 processing speed problems
http://code.google.com/p/lilypond/issues/detail?id=1926

On my system, 2.15.12 is _much_ slower than 2.15.10 for files of a fair complexity. The Mozart Horn regtest went from 14 seconds to 27 seconds. A 70 bar, 7 page piece by Parry I'm currently setting went from 23.3 seconds to 49.3. I've pasted below the worst increases in the regtests. This will probably be difficult to view, but may help debugging:

File    Old.Time        New.Time
midi-scales.ly  3.13    6.89
compound-time-signatures.ly     3.05    6.81
paper-margins-line-width.ly     2.59    5.94
page-turn-page-breaking-repeats.ly      2.78    6.42
paper-twosided-bcorr.ly 10.02   23.27
page-turn-page-breaking-auto-first-page.ly      3.02    7.16
paper-default-margins-def.ly    3.33    8.14
beam-auto.ly    5.69    13.91
paper-twosided.ly       9.83    24.14




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