You can tune ConnectALL to optimize its performance by increasing or decreasing the values of two concurrent threads(provided in the below procedure). To do this, you have to set the same values for max_threads and concurrent_transaction_threads. Note that, a significantly higher value will take a toll on CPU, and similarly, a significantly lower value will have an impact on the record's throughput via ConnectALL. Therefore, when you are tuning, increase it gradually from the recommended default value of 16.
This is the maximum number of active receiver threads configured for update flow. (i.e.) Processing messages from Virtual Machine queue to either create/update records in the end application.
concurrent_transaction_threads
This indicates the number of concurrent transactions that can be executed for update flow.
Tip
To ensure optimal performance, configure the same values for both the attributes.