VPC Performance– Symptom : Entire VPC is slow
People tend to refer to VPC as a single entity – and talk about ‘the VPC is slow, the VPC is not secure etc..’ However , a VPC is a ‘composite’ entity, made up of several smaller networking constructs.
EC2 Instance Performance
Symptom: Only specific EC2 instances are slow.
Common Troubleshooting Steps
- tcptraceroute from the desktop/end user location to the instance in whatever Region the VPC (or EC2 instance is) in at the time that this slowness is being experienced.
- Also a tcpdump of the traffic between the desktop and the EC2 instance..
- The AWS geographical region of the instances – and its proximity to the end-users is also somewhat a factor.