Change git fleet instance count and type
After investigation and experimentation performed in https://gitlab.com/gitlab-com/gl-infra/infrastructure/-/issues/9906, it's been decided that the C2 instance type is not suitable.
Context
- The drop in CPU usage on the
git
fleet when using C2 instance types does not warrant the use of this type. Improvement gains are not as substantial as desired - The memory increase that comes with the use of the C2 instance type is also a large drawback
Proposal
- Increase the fleet count from the current
20
to25
- Consider going to
27
to create an even load across all available zones inus-east1
- Consider going to
- Change the fleet type to
n1-highcpu-16
End Result
- RAM utilization will be better overall, closer to saturation
- CPU utilization will be lower due to the increase in fleet size
Edited by John Skarbek