This benchmark first generates a number of randomly generated md pages (configure the number by setting NUM_PAGES=400) and then it builds.

The base for this site is gatsby-starter-blog.

This particular markdown benchmark will query pages by their id, which is (at the time of writing) faster than indexing pages by their slug.

The pre-generate script stores pages in root/markdown-pages.

yarn
yarn bench

If you want to run the same pages without regenerating them you can use yarn benchnb. It's fine to use gatsby clean regardless.

Use yarn to install if you want to use gatsby-dev. Otherwise I don't think it matters between yarn or npm install.

# Requires node 8+
# nvm use 8
yarn
rm -r markdown-pages
NUM_PAGES=2000 node md.generate.js
gatsby clean
node --max_old_space_size=2000 node_modules/.bin/gatsby build

The last step could also just be gatsby build if the number of pages is small enough. The example will increase the maximum reserved "old object space" which you'll need for a larger number of pages.