Re: lilypond hangs

[Jay Anderson]

On Thu, Jan 5, 2012 at 12:50 AM, Keith OHara <address@hidden> wrote:
> \paper { paper-width= 10000\mm }
> { \override Score.NonMusicalPaperColumn #'line-break-permission = ##f
>  \repeat unfold 400 { b'4 } }
>
>> Given this message []
>>
>> it seems that previous versions of lilypond don't have this problem.
>
>
> Jay compiles his own LilyPond, so he probably used a recent version for
> that.  I use 2.14.
> This are of code hasn't changed (much) for a few years at least.

Actually I was just compiling a score which was small enough that it
didn't cause a problem. I just tried a larger score and it was taking
forever (even from master) so I looked the issue up and found this
message. Thanks for the workaround. I agree with Werner that this is a
bug, but with the override it's low priority (it may be worth
documenting however).

Time w/o workaround:
real    3m54.732s
user    3m54.311s
sys     0m0.352s

Time w/ workaround:
real    0m7.804s
user    0m7.472s
sys     0m0.300s


Also in case anyone's interested I just put up a better version today:
http://www.youtube.com/watch?v=OnoBD_QSskE

It's using cubic-spline interpolation so scrolling is smoother and I
spent some time making sure I had the beats marked correctly in the
audio. With my previous method if listening and hitting a key to mark
the beats they were way off (I think the audio buffer size was the big
part problem). I wrote a little tool to let me graphically mark the
beats and play back to verify correctness. In any case it looks much
better. Next I'm going to play with rendering either the svg or pdf
while creating the video to avoid rasterizing too early in the
process.

-----Jay