# Where does generating the graph take most of the time?

**URL:** <https://forum.graphviz.org/t/where-does-generating-the-graph-take-most-of-the-time/668>\
**Category:** Uncategorized\
**Created:** [May 22, 2021, 12:22am UTC](https://forum.graphviz.org/t/where-does-generating-the-graph-take-most-of-the-time/668 "2021-05-22T00:22:48Z")\
**Posts on this page:** 1\
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**Author:** ![smattr](https://sea2.discourse-cdn.com/graphviz/user_avatar/forum.graphviz.org/smattr/32/85_2.png) [@smattr](https://forum.graphviz.org/u/smattr)\
**Post date:** [May 22, 2021, 3:02pm UTC](https://forum.graphviz.org/t/where-does-generating-the-graph-take-most-of-the-time/668/2 "2021-05-22T15:02:08Z")

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I’ll leave it to someone else to answer specifics about simplex, but if you want to share your example I can try profiling it to see what we can optimize. I’ve been doing some of this work lately, but we really need more expensive user examples to guide our investigation.

I am not sure what you mean by `dot.render()`. Graphviz is mostly C code, so there is nothing like this specific invocation.

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