Output¶

For each described bus, Busperf will calculate and display several statistics.

Single channel¶

• bus_name: name of the bus

• busy: number of clock cycles performing transaction

• free: bus is not used

• no transaction: transaction is not performed

• backpressure: backpressure

• no data: receiver ready but no data is available to transfer

• reset: clock cycles with reset active

• transaction delays: delays in clock cycles between transactions

• burst lengths: lengths of bursts including delays during burst

Table matching state of the bus with Busperf statistic name:

Multi channel¶

• Cmd to completion: number of clock cycles from issuing a command to receiving a response

• Cmd to first data: number of clock cycles from issuing a command to first data being transferred

• Last data to completion: number of clock cycles from last data being transferred to transaction end

• Transaction delays: delays between transactions in clock cycles

• Error rate: percentage of transactions that resulted in error

• Bandwidth: averaged bandwidth in transactions per clock cycle

Examples¶

Single channel buses¶

Multi channel buses¶