profiler(1m)               DG/UX 4.30                profiler(1m)



     NAME
          prfld, prfstat, prfdc, prfsnap, prfpr - DG/UX operating
          system profiler

     SYNOPSIS
          /etc/prfld [-f device_name] [ namelist ]
          /etc/prfstat on
          /etc/prfstat [-f device_name] off
          /etc/prfdc [-f device_name] file [ period [ off_hour ] ]
          /etc/prfsnap [-f device_name] file
          /etc/prfpr file [ cutoff [ namelist ] ]

     DESCRIPTION
          Prfld, prfstat, prfdc, prfsnap, and prfpr form a system of
          programs to study activity on a DG/UX operating system.

          Prfld is used to initialize the recording mechanism in the
          system.  It generates a table containing the starting
          address of each system subroutine as extracted from
          namelist.

          Prfstat is used to enable or disable the sampling mechanism.
          Prfstat also reveals the number of text addresses being
          measured.

          Prfdc and prfsnap collect data by copying the current value
          of all the text address counters to a file for analysis.
          Prfdc stores the counters into file every period minutes and
          turns off at off_hour (valid values for off_hour are 0-24).
          Prfsnap collects data at the time of invocation only,
          appending the counter values to file.

          Prfpr formats the data collected by prfdc or prfsnap.  Each
          text address is converted to the nearest text symbol (as
          found in namelist) and is printed if the percentage activity
          for that range is greater than cutoff.

          These commands will take the following option:

          -f device_name
               This option allows profiling on a specific CPU rather
               than on all CPUs at once.  Device_names indicate the
               processor as defined in the /dev directory.  Valid
               device_names are of the form /dev/prf0, /dev/prf1...to
               /dev/prfn.  To perform profiling on all processors
               specify /dev/prf, without a processor number.

     FILES
          /dev/prf* Interface(s) to profile data and text addresses
          /dgux     Default for namelist file

     SEE ALSO



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     profiler(1m)               DG/UX 4.30                profiler(1m)



          prf(7).






















































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