Performance issues on Altera C5SOC

[gauravks]

Kalycito bug Id: 2699
Bug Type: PERFORMANCE optimization
Design: Altera C5SOC
Target Release: v2.4.1

Configuration:

MN	CN	CDC
mn-soc-shmem-gpio	Bus coupler	10CN/36TPDO/24RPDO/400us/800us
mn-soc-shmem-gpio	Bus coupler	20CN/64TPDO/64RPDO/400us/10ms
mn-soc-shmem-gpio	Bus coupler	30CN/252TPDO/104RPDO/2ms/10ms

Observation:

• With 10CN/36TPDO/24RPDO configuration:
  • MN hangs PRE_OP2 state with the 250us, 400us and 500us cycle time
• With 20CN/64TPDO/64RPDO configuration:
  • MN hangs PRE_OP2 state with the 400us, 500us, 800us, 1000us and 2000us cycle time
  • MN reaches Operational state with the 5000us cycle time and all the CN were crashed after 20 minutes.
  • MN reaches Operational state with the 10000us cycle time, during the long run following error message is displayed in LCD screen
    ERROR=0x0005”(Operation is not allowed in this situation)
• With 30CN/252TPDO/104RPDO configuration:
  • MN hangs Ready_to_Operate state with the 2000us, 5000us and 10000us cycle time

[VarunRajendran]

Analysed the issue by adding benchmark in the host processor.
Configuration:
CDC: 30CN/252TPDO/104RPDO/50ms

While debugging we noticed that(i.e., after MN reach operational) ProcesSync() on the host processor takes 17ms and also copy of RxPdo and TxPdo taken time duration of 16.86ms to complete its process. Please refer the attached image for the reference.