Interesting read about small changes in low-level code can make a big difference in overall system performance.https://twitter.com/gitlab/status/955889120315871234 …
After noticing a worrying pattern in the performance of Gitaly, a Git RPC service we're rolling out across http://GitLab.com , we uncovered an issue with fork locking affecting virtual memory size. Here's how we fixed it, via @suprememoocow 
https://about.gitlab.com/2018/01/23/how-a-fix-in-go-19-sped-up-our-gitaly-service-by-30x/ …
https://about.gitlab.com/2018/01/23/how-a-fix-in-go-19-sped-up-our-gitaly-service-by-30x/ …
