profiler(1M) profiler(1M)
NAME
profiler: prfld, prfstat, prfdc, prfsnap, prfpr - system profiler
SYNOPSIS
/usr/sbin/prfld [systemnamelist]
/usr/sbin/prfstat on
/usr/sbin/prfstat off
/usr/sbin/prfdc file [period [offhour]]
/usr/sbin/prfsnap file
/usr/sbin/prfpr file [cutoff [systemnamelist]]
DESCRIPTION
prfld, prfstat, prfdc, prfsnap, and prfpr form a system of programs to
facilitate an activity study of the Reliant UNIX operating system.
prfld is used to initialize the recording mechanism in the system. It
generates a table containing the starting address of each system sub-
routine as extracted from systemnamelist.
prfstat is used to enable or disable the sampling mechanism. Profiler
overhead is less than 1% as calculated for 500 text addresses. prfstat
will also reveal the number of text addresses being measured.
prfdc and prfsnap perform the data collection function of the profiler
by copying the current value of all the text address counters to a
file where the data can be analyzed. prfdc will store the counters
into file every period minutes and will turn off at offhour (valid
values for offhour 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
systemnamelist) and is printed if the percent activity for that range
is greater than cutoff. prfpr produces no output, if file contains
only one sample. Call prfsnap twice before calling prfpr.
FILES
/dev/prf
interface to profile data and text addresses
/stand/unix
default for system namelist file
SEE ALSO
System Administrator's Guide.
Page 1 Reliant UNIX 5.44 Printed 11/98