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authorKarl Berry <karl@freefriends.org>2017-04-19 23:04:15 +0000
committerKarl Berry <karl@freefriends.org>2017-04-19 23:04:15 +0000
commitf74161ca4e7eb3c5af9afcbe92522ae3b58987c1 (patch)
tree3c30a13df5ac7968195c85070a2b074578e669d2 /Master/texmf-dist/doc/context/presentations/bachotex/2013/bachotex-2013-speed.tex
parent1d5a55ac8f5506a7ae9cfca52f4b588182e199d4 (diff)
context beta/cont-tmf.zip (Apr 16 12:55)
git-svn-id: svn://tug.org/texlive/trunk@43931 c570f23f-e606-0410-a88d-b1316a301751
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+% \enablemode[print]
+
+\usemodule[pre-stepwise,present-tiles,abr-02]
+
+\definecolor[maincolor] [darkgray]
+\definecolor[othercolor][r=.3,g=.3]
+
+% \setupinteractionscreen
+% [option=max]
+
+\setupbodyfont[15pt]
+
+\startdocument
+ [title={Speed:\\\\can we make\\it any faster},
+ subtitle={Hans Hagen\\EuroBacho\TeX\\May 2013}]
+
+\StartSteps
+
+\starttopic[title={Speed}]
+
+ \startitemize
+ \startitem speed matters in a edit-run-preview cycle although this is mostly perception \FlushStep \stopitem
+ \startitem the nicer the interface, the slower it gets, but you seldom set something up \FlushStep \stopitem
+ \startitem everything you provide gets used at some point, also in inefficient ways \FlushStep \stopitem
+ \startitem lots of local (grouped) tweaks leads to many mechanisms kicking in unseen \FlushStep \stopitem
+ \startitem wrong use of functionality can have drastic and unexpected speed penalties \FlushStep \stopitem
+ \stopitemize
+
+\stoptopic
+
+\StopSteps
+
+\StartSteps
+
+\starttopic[title={Pages per minute}]
+
+ \startitemize
+ \startitem we try to speed up baseline performance (in pages per second) \FlushStep \stopitem
+ \startitem identify and optimize critical routines, both at the \TEX\ and \LUA\ end \FlushStep \stopitem
+ \startitem of course the machine (Dell M90, SSD, 4GB, 2.33 Ghz T7600, Windows 8) and versions if \LUATEX\ (0.72+) and \CONTEXT\ matter \FlushStep \stopitem
+ \stopitemize
+
+ \blank
+
+ \starttyping
+ \dorecurse {1000} {test \page}
+ \stoptyping
+
+ \FlushStep
+
+ \blank
+
+ \starttabulate[|r|r|r|r|]
+ \HL
+ \NC \bf \# pages \NC \bf Januari \NC \bf April \NC \bf May\rlap{\quad(2013)} \NR
+ \HL
+ \NC 1 \NC 2 \NC 2 \NC 2 \NC \NR
+ \NC 10 \NC 15 \NC 17 \NC 17 \NC \NR
+ \NC 100 \NC 90 \NC 109 \NC 110 \NC \NR
+ \NC 1000 \NC 185 \NC 234 \NC 259 \NC \NR
+ \NC 10000 \NC 215 \NC 258 \NC 289 \NC \NR
+ \HL
+ \stoptabulate
+
+ \FlushStep
+
+\stoptopic
+
+\StopSteps
+
+\StartSteps
+
+\starttopic[title={What happens}]
+
+ \startitemize
+ \startitem load macros and \LUA\ code is loaded from the format \FlushStep \stopitem
+ \startitem the system gets initialized, think of fonts and languages \FlushStep \stopitem
+ \startitem additional (runtime) files are loaded \FlushStep \stopitem
+ \startitem text is typeset and eventually gets passed to the page builder \FlushStep \stopitem
+ \startitem pages are packaged, this includes reverting to global document states \FlushStep \stopitem
+ \startitem the \PDF\ representation is created \FlushStep \stopitem
+ \startitem each of these steps has its bottlenecks \FlushStep \stopitem
+ \startitem the more we don, the more \LUA\ gets involved \FlushStep \stopitem
+ \stopitemize
+
+\stoptopic
+
+\StopSteps
+
+\StartSteps
+
+\starttopic[title={What we can do}]
+
+ \startitemize
+ \startitem avoid copying boxes where possible \FlushStep \stopitem
+ \startitem only enable initializers and finalizers when functionality is used \FlushStep \stopitem
+ \startitem be clever with fonts, in usage as well as in supporting features \FlushStep \stopitem
+ \startitem use trial runs in multi||pass mechanisms \FlushStep \stopitem
+ \startitem avoid too much macro expansion (only matters for tracing) \FlushStep \stopitem
+ \startitem accept that more functionality has a price \FlushStep \stopitem
+ \stopitemize
+
+ but
+
+ \startitemize
+ \startitem don't compromise functionality \FlushStep \stopitem
+ \startitem avoid too obscure code \FlushStep \stopitem
+ \startitem forget about optimization by means of combining functionality \FlushStep \stopitem
+ \stopitemize
+
+\stoptopic
+
+\StopSteps
+
+\stopdocument