On Dec 10, 2013, at 10:36 AM, Keith OHara <k-ohara5...@oco.net> wrote:

> On Mon, 25 Nov 2013 00:10:08 -0800, David Kastrup <d...@gnu.org> wrote:
> 
>> "Keith OHara" <k-ohara5...@oco.net> writes:
>> 
>>> I timed one big score, Movement 1 of 
>>> <http://www.mutopiaproject.org/cgibin/piece-info.cgi?id=1793>
>>>         2.16.2  2.17.95
>>> WinXP   2m 30s  5m 10s
>>> Fedora  1m 50s  1m 50s
> 
>> Have you used the GUB-compiled binary package, or Fedora's built-in or a
>> self-compiled package?  I think that you probably can only make
>> platform-specific comparisons if you use GUB for all.
> 
> GUB-compiled packages in all cases give the same results as above.
> 
> Most of the increase in time to set this score happened between 2.17.0 and .1
> 2.16.2 2m 30s
> 2.17.0 2m 28s
> 2.17.1 4m 06s
> so it is probably the issue 2148 patch, use of outlines instead of boxes for 
> layout.
> 
> I did speed-test that patch, but under Linux.  Maybe the system calls to the 
> font server, to get outlines for the glyphs, take longer under Windows.
> 

One easy way to avoid this is to turn off this feature with vertical-skylines = 
##f for lots of grobs - I do this often for big scores when I want to compile 
them fast, but I reactivate the more accurate vertical skylines for the final 
version.

Cheers,
MS
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