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Re: Issue 1211 in lilypond: [PATCH]Optimizations for pure-height approxi

From: lilypond
Subject: Re: Issue 1211 in lilypond: [PATCH]Optimizations for pure-height approximations. (issue1817045)
Date: Fri, 19 Nov 2010 22:25:50 +0000

Comment #4 on issue 1211 by n.puttock: [PATCH]Optimizations for pure-height approximations. (issue1817045)

I've done some more benchmarking, this time using Valentin's opera* (which annoyingly, I still haven't succeeded in compiling in Ubuntu due to lack of RAM).

* http://repo.or.cz/w/opera_libre.git/blob/refs/heads/new:/scores/opera/main.ly, with some tweaks to get it working in 2.13

The following timings were produced via mingw builds under Windows XP on a dual core
Athlon X2 4800+ with 2 GB of RAM:


 optimized: 96m8.735s

 standard: 207m49.985s

(recent) git master:

 optimized: 139m50.875s

 standard: 249m6.891s

Unfortunately there's been a drop in performance since 2.13.36; I've narrowed it down to Joe's fix for issue 1240 (5266aa). As you can see from the above timings, it adds over forty minutes to both optimized and standard builds.

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