In the INSTRUCTION domain, to determine which vector instructions
    are used most by your program, enter the following command line:

  PCAC> PLOT/VCOUNTERS INSTRUCTION BY VOPCODE

    This command causes the report view to be based on the
    disassembled opcode for each vector instruction in the entire
    application that is sampled. The number of times a vector
    instruction is used lets you see if your application is spending
    a lot of time performing certain operations. For example, if you
    see that the SYNC vector instruction is executed more than any
    other vector instruction, you can infer that the scalar processor
    is spending too much idle time waiting for the vector processor
    to finish an operation.