Re: Issue 1211 in lilypond: [PATCH]Optimizations for pure-height approximations. (issue1817045)

[lilypond]

Comment #4 on issue 1211 by n.puttock: [PATCH]Optimizations for pure-height  
approximations. (issue1817045)
http://code.google.com/p/lilypond/issues/detail?id=1211

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:

2.13.36:

 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.