While running scale tests with ACM provisioning 1200+ SNOs via ZTP, converged flow was enabled. With converged flow the rate at which clusters begin install is much slower than what was witnessed without converged flow.

Example:
Without converged flow - 1250/1269 SNOs completed install in 3hrs and 11m
With converged flow - 487/1250 SNOs completed install in 10hours

The test actually hit timeouts so we don't exactly know how long it took, but you can see we only managed 487 SNOs to be provisioned in 10 hours.

The concurrency measurement scripts show that converged flow ran at a concurrency of 68 SNOs installing at a time vs non-converged flow peaking at 507.  Something within the converged flow is bottlenecking the SNOs install.

Hub/SNO OCP 4.11.8
ACM 2.6.1-DOWNSTREAM-2022-09-08-02-53-38

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converged flow to match previous provisioning speeds/rates

Must gather will be provided.