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Dell PowerEdge FN I/O Module Configuration Guide 9.10(0.0)

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Dataplane Statistics

The show hardware stack-unit cpu data-plane statistics command provides insight into the packet types coming to the CPU.

The command output in the following example has been augmented, providing detailed RX/ TX packet statistics on a per-queue basis. The objective is to see whether CPU-bound traffic is internal (so-called party bus or IPC traffic) or network control traffic, which the CPU must process.

Example of Viewing Dataplane Statistics

Dell#show hardware stack-unit 2 cpu data-plane statistics
                                 
                                 bc pci driver statistics for device:
                                 rxHandle        :0
                                 noMhdr          :0
                                 noMbuf          :0
                                 noClus          :0
                                 recvd           :0
                                 dropped         :0
                                 recvToNet       :0
                                 rxError         :0
                                 rxDatapathErr   :0
                                 rxPkt(COS0)     :0
                                 rxPkt(COS1)     :0
                                 rxPkt(COS2)     :0
                                 rxPkt(COS3)     :0
                                 rxPkt(COS4)     :0
                                 rxPkt(COS5)     :0
                                 rxPkt(COS6)     :0
                                 rxPkt(COS7)     :0
                                 rxPkt(UNIT0)    :0
                                 rxPkt(UNIT1)    :0
                                 rxPkt(UNIT2)    :0
                                 rxPkt(UNIT3)    :0
                                 transmitted     :0
                                 txRequested     :0
                                 noTxDesc        :0
                                 txError         :0
                                 txReqTooLarge   :0
                                 txInternalError :0
                                 txDatapathErr   :0
                                 txPkt(COS0)     :0
                                 txPkt(COS1)     :0
                                 txPkt(COS2)     :0
                                 txPkt(COS3)     :0
                                 txPkt(COS4)     :0
                                 txPkt(COS5)     :0
                                 txPkt(COS6)     :0
                                 txPkt(COS7)     :0
                                 txPkt(UNIT0)    :0
                              

The show hardware stack-unit cpu party-bus statistics command displays input and output statistics on the party bus, which carries inter-process communication traffic between CPUs

Example of Viewing Party Bus Statistics

Dell#show hardware stack-unit 2 cpu party-bus statistics
                                 Input Statistics:
                                 27550 packets, 2559298 bytes
                                 0 dropped, 0 errors
                                 Output Statistics:
                                 1649566 packets, 1935316203 bytes
                                 0 errors
                              

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