travis-ci/travis-web-log — pull request #5 by staabm (2013-10-26 10:50:13+00:00)
Title: use DocumentFragment when buildin folds to speedup things.

refs https:/github.com/travis-ci/travis-ci/issues/1340

wasn't able to profile it on my pc though I would love to profile it again in case you would get this up on a staging environment somewhere.