https://gitlab.com/gitlab-org/gitlab-ce/issues/26405#note_20...
Some of our users have 25k+ users on their cluster. We know GitLab can scale to 100k users because we run GitLab Enterprise Edition without modifications on GitLab.com
GitLab.com currently has much more than 100k users and the performance leaves much to be desired https://gitlab.com/gitlab-com/infrastructure/issues/947
But we're comfortable that you can run 100k users on a cluster of machines without much tuning.
GitHub seems to have a clustering product that came out a year ago, and it looks like IBM has reported they're running over 13,000 users on it (back in August, i imagine it's closer to 20,000 by now): https://www.ibm.com/blogs/bluemix/2016/08/ibm-internal-githu...
> We know GitLab can scale to 100k users because we run GitLab Enterprise Edition without modifications on GitLab.com
What does "modification" mean in this context? Beyond recommended specifications listed at https://docs.gitlab.com/ee/install/requirements.html#cpu and https://docs.gitlab.com/ee/install/requirements.html#memory? it doesnt list anything above 40,000 users. Beyond that, the HA documentation (https://docs.gitlab.com/ce/administration/high_availability/...) isn't _really_ active/active HA, it says it is but it's not true. True active/active would mean that you wouldn't rely on a shared NFS server, postgres, or redis server.
However, with https://help.github.com/enterprise/2.8/admin/guides/clusteri... it sounds like my organization can scale to well over 100,000 by adding more clustering nodes instead of trying to figure out independently how to scale services like redis or postgres or a shared NFS server.
> without much tuning.
I'd love to hear a comparison between the two products, and also what kind of tuning you've done on gitlab.com to support those user numbers. Would love to see that on the documentation to support the open source way!
Out of curiosity: how many users do you have, and what measurements are you using to determine scalability?
Disclaimer: I work at GitHub.