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Notes on CI implementation

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Bryan Boreham edited this page Nov 5, 2015 · 4 revisions

Some things I discovered while looking into why our CI tests take so long (currently around 14 minutes).

We run 2 shards on CircleCI.

Each line that is declared to run "parallel:true" runs on every shard, and waits for that line to complete until running the next line.

We set up 5 GCE hosts for each shard (so 10 total), then run tests using a test-runner which parallelises them.