Standard performance metrics are describing the test execution and the performance of the System Under Test
Among standard metrics are:

Throughput - number of successful transaction (request + response) per second during test execution
Latency - response time of the SUT. We are measuring mean value, standard deviation and percentiles of this parameter
Success rate - relation of the successful transactions to the full number of transactions
Number of fails - number of failed transactions
Duration - load test duration
Iterations - full number of transactions
Virtual users - number of virtual users for load generation

Metrics above are always collected and stored.
Throughput and latency are collected only for successful transactions. If transaction was successful or not is defined by validators

Note: you can configure what latency percentiles will be saved for particular load scenario. Details: JLoadScenario