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\usemodule[present-lines]
\definecolor[maincolor][g=.4,b=.4]
\startdocument[title=Performance,subtitle={\CONTEXT\ 2017 Maibach}]
\startchapter[title=Why bother]
\startitemize
\startitem because we don't want to waste time waiting \stopitem
\startitem because I get tired of ignorance related complaints \stopitem
\startitem because it (sometimes) can be a nice puzzle to improve performance \stopitem
\startitem because it occasionally reviewing makes code better \stopitem
\stopitemize
\stopchapter
\startchapter[title=Possible bottlenecks]
\startitemize
\startitem starting up \stopitem
\startitem loading fonts \stopitem
\startitem processing features \stopitem
\startitem applying trickery \stopitem
\startitem enabling tracing \stopitem
\blank[2*big]
\startitem fonts \stopitem
\startitem \LUA \stopitem
\startitem images \stopitem
\stopitemize
\stopchapter
\startchapter[title=Measurements]
\startitemize
\startitem how long does a run take \stopitem
\startitem how does the number of pages matter \stopitem
\startitem how many runs are needed \stopitem
\blank[2*big]
\startitem start-up time \stopitem
\startitem processing pages \stopitem
\startitem finishing the document \stopitem
\startitem the console used \stopitem
\stopitemize
\stopchapter
\startchapter[title=Examples]
\startitemize
\startitem
see \goto{onandon-performance.pdf}[file(onandon-performance.pdf)] for timings
\stopitem
\startitem
you can try \type {--timing} to see where \LUA\ spends it time
\stopitem
\startitem
analyzing with \type {--profile} can give some indication (but is slow)
\stopitem
\stopitemize
\stopchapter
\stopdocument
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