Performance and fonts issues

Performance and fonts issues

[Vyatcheslav Yatskovsky]

Hello,

I wonder -- why wait up to 5sec to (re)compile a single page on a Core 2 
Duo machine?

Let's look at the end of the log file for my simple, one-page document:

mkiv lua stats : input load time - 0.000 seconds
mkiv lua stats : stored bytecode data - 184 modules, 45 tables, 229 chunks
mkiv lua stats : node list callback tasks - 4 unique tasks, 3 created, 
75 calls
mkiv lua stats : cleaned up reserved nodes - 23 nodes, 9 lists of 1410
mkiv lua stats : node memory usage - 20 glue_spec, 2 dir
mkiv lua stats : used backend - pdf (backend for directly generating pdf 
output)
mkiv lua stats : loaded patterns - en:us:pat:exc:2
mkiv lua stats : startup time - 0.531 seconds (including runtime option 
file processing)
mkiv lua stats : callbacks - direct: 288, indirect: 3681, total: 3969
mkiv lua stats : loaded fonts - 37 files: lmmono10-regular.otf 
lmmono12-regular.otf lmmono8-regular.otf lmmono9-regular.otf 
lmroman10-bold.otf lmroman10-regular.otf lmroman12-bold.otf 
lmroman12-regular.otf lmroman7-bold.otf lmroman7-regular.otf 
lmroman9-bold.otf lmroman9-regular.otf lmsans10-regular.otf 
lmsans12-regular.otf lmsans8-regular.otf lmsans9-regular.otf eufb10.tfm 
eufb7.tfm eufm10.tfm eufm7.tfm msam10.tfm msam7.tfm msbm10.tfm msbm7.tfm 
lmex10.tfm lmmi10.tfm lmmi12.tfm lmmi7.tfm lmmi9.tfm lmmib10.tfm 
lmmib7.tfm lmsy10.tfm lmsy7.tfm lmsy9.tfm minionpro-bold.otf 
minionpro-it.otf minionpro-regular.otf
mkiv lua stats : fonts load time - 2.750 seconds
mkiv lua stats : result saved in file - garden_in_the_rain.pdf
mkiv lua stats : luatex banner - this is luatex, version 
beta-0.43.0-2009083017
mkiv lua stats : control sequences - 29475 of 165536
mkiv lua stats : current memory usage - 147 MB (ctx: 151 MB)
mkiv lua stats : runtime - 3.438 seconds, 1 processed pages, 1 shipped 
pages, 0.291 pages/second

Startup time is 0.531 seconds. OK. Then, why on the Earth all these 
lmxxx fonts are loaded, if I use Minion Pro typescript? 2.7sec... Hmmm. 
Seems like a root of evil. What can I do to get rid of all of them?

My typescript:
\starttypescript [serif] [MinionPro]
\definefontsynonym [Serif][MinionPro-Regular.otf][features=default]
\definefontsynonym [SerifBold][MinionPro-Bold.otf][features=default]
\definefontsynonym [SerifItalic][MinionPro-It.otf][features=default]
\definefontsynonym [SerifBoldItalic][MinionPro-BoldIt.otf][features=default]
\stoptypescript

\starttypescript [MinionPro]
\definetypeface [MinionPro][rm][serif][MinionPro][default]
\stoptypescript


Regards,
Vyatcheslav

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Re: Performance and fonts issues

[Hans Hagen]

Vyatcheslav Yatskovsky wrote:

> Startup time is 0.531 seconds. OK. Then, why on the Earth all these 
> lmxxx fonts are loaded, if I use Minion Pro typescript? 2.7sec... Hmmm. 
> Seems like a root of evil. What can I do to get rid of all of them?

those fonts are loaded for math (and only once as fonts are shared)

> My typescript:
> \starttypescript [serif] [MinionPro]
> \definefontsynonym [Serif][MinionPro-Regular.otf][features=default]
> \definefontsynonym [SerifBold][MinionPro-Bold.otf][features=default]
> \definefontsynonym [SerifItalic][MinionPro-It.otf][features=default]
> \definefontsynonym 
> [SerifBoldItalic][MinionPro-BoldIt.otf][features=default]
> \stoptypescript
> 
> \starttypescript [MinionPro]
> \definetypeface [MinionPro][rm][serif][MinionPro][default]
> \stoptypescript

this takes 2.5 seconds on my machine

\starttext
     \usetypescript[palatino]   \setupbodyfont[palatino]     test\par
     \usetypescript[postscript] \setupbodyfont[postscript]   test\par
     \usetypescript[cambria]    \setupbodyfont[cambria]      test\par
\stoptext

(there is a way to prevent initial loading but it does not save that 
much time)

two cores is less important than a big 2 level cache (influences lua 
runtime) and memory (so that files are cached in mem)

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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___________________________________________________________________________________

Re: Performance and fonts issues

[Hans Hagen]

Vyatcheslav Yatskovsky wrote:

> Mine is 2.656sec, but actual time is > 5 sec (I had a lot of complaints 
> about math issues like
> 'math virtual | unicode point U+1D6EB has no index 004B in vector tex-mi 
> for font rtxmi' )

if you run from the console (cmd), then consider switching to 'console2' 
  which is faster wrt refresh (windows consoles have a high refresh rate)

> Would it be reasonable to have ConTeXt as a service sitting in the 
> memory and processing documents on demand?
> I believe that >2sec for processing a single page plain text document is 
> ridiculous. Given modern computer power, I suppose it can be done 
> instantly. (Or am I are mistaken?)

one still would need to initialize .. and in most cases docs are more 
than one page

Hans

-----------------------------------------------------------------
                                           Hans Hagen | PRAGMA ADE
               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
      tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
                                              | www.pragma-pod.nl
-----------------------------------------------------------------
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: Performance and fonts issues

[Vyatcheslav Yatskovsky]

Hi,

1)
> those fonts are loaded for math (and only once as fonts are shared)
>    
Don't understand what 'shared' fonts mean, but how can I prevent these 
math fonts from loading? Maybe elaborate the typescript?

2)
> this takes 2.5 seconds on my machine
>
> \starttext
>       \usetypescript[palatino]   \setupbodyfont[palatino]     test\par
>       \usetypescript[postscript] \setupbodyfont[postscript]   test\par
>       \usetypescript[cambria]    \setupbodyfont[cambria]      test\par
> \stoptext
>    
Mine is 2.656sec, but actual time is > 5 sec (I had a lot of complaints 
about math issues like
'math virtual | unicode point U+1D6EB has no index 004B in vector tex-mi 
for font rtxmi' )

3)
Would it be reasonable to have ConTeXt as a service sitting in the 
memory and processing documents on demand?
I believe that >2sec for processing a single page plain text document is 
ridiculous. Given modern computer power, I suppose it can be done 
instantly. (Or am I are mistaken?)

Regards,
Vyatcheslav
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : https://foundry.supelec.fr/projects/contextrev/
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