profiler(1m)
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prfld, prfstat, prfdc, prfsnap, prfpr
DG/UX operating system profiler
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SYNTAX
/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.
DG/UX 4.00 Page 1
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profiler(1m)
FILES
/dev/prf* Interface(s) to profile data and text addresses
/dgux Default for namelist file
SEE ALSO
prf(7).
DG/UX 4.00 Page 2
Licensed material--property of copyright holder(s)