How do performance testing on VMware and K8s

I installed same cluster on VMware and K8s.
How do performance testing?
Compare the difference between them

“Performance testing” is very ambiguous. Each application is different, and generic performance tests are usually rubbish as they don’t tell you anything about your actual predicted performance when you deploy your system to production.

For example, if I use a relational database, performance testing inserts to a small table without indexes would tell me nothing about how good a query with ten left outer joins without indexes will perform.

Performance of any database depends on the dataset size, concurrent transactional load, size of the payload for transactions, the number of concurrent reads and what exactly you are reading, as well as the size of the returned dataset.

I assume any stack has its own choice of tools and libraries to simulate the application load, applying certain constraints.