Re: Issue 1926 in lilypond: 2.15.12 processing speed problems

[address@hidden]

On Oct 1, 2011, at 11:47 AM, address@hidden wrote:

> Updates:
>       Status: Accepted
>       Labels: -fixed_2_15_13
> 
> Comment #4 on issue 1926 by address@hidden: 2.15.12 processing speed problems
> http://code.google.com/p/lilypond/issues/detail?id=1926
> 
> No.  On my Windows Vista box, for a fairly complex piece of music (Finale Act 
> I of The Gondoliers - about 500 bars, 30-odd pages), I get:
> 
> 2.12.3 - 545 seconds
> 2.15.9 - 205 sec
> 2.15.10 - 210 sec
> 2.15.12 - 335 sec (+60%)
> 2.15.13 - 341 sec
> 
> So we see that for complex music, the problem remains.  My experience of 
> running the regtests was that for simple music, 2.15.12 was OK to better; for 
> longer music much worse.  I'd suggest using the Mozart Horn regtest as a test 
> case/comparator that somewhat fulfills this requirement.

Confirmed.  I finally noticed the problem when I compiled a 30ish page new work 
on current master.

Phil - could you send me the source files?  I have a 2h train ride Monday 
evening that I can use to crunch Gilbert and Sullivan through various 
incarnations of 2.15 to find where the hike in compiling time crept in.

Cheers,
MS