sadc - System activity data collector.


SYNOPSIS

       /usr/lib/sa/sadc  [  -I  ]  [ -V ] [ -x pid ] [ -X pid ] [
       interval [ count ] ] [ outfile ]


DESCRIPTION

       The sadc command samples system data a specified number of
       times  (  count ) at a specified interval measured in sec­
       onds ( interval ). It writes in binary format to the spec­
       ified outfile or to the standard output. If outfile is set
       to -, then sadc uses the standard  system  activity  daily
       data file, the /var/log/sa/sadd file, where the dd parame­
       ter indicates the current day.  When the  count  parameter
       is  not  specified,  sadc writes its data endlessly.  When
       both interval and count are not specified, a dummy record,
       which  is used at system startup to mark the time when the
       counter restarts from 0, will be  written.   For  example,
       one  of  the  system  startup script may write the restart
       mark to the daily data file by the command entry:

       /usr/lib/sa/sadc -

       The sadc command is intended to be used as  a  backend  to
       the sar command.

       Note: The sadc command reports only local activity.


OPTIONS

       -I     Tell  sadc  to  report  statistics  for  all system
              interrupts. By default, sadc only  reports  statis­
              tics for the total number of interrupts.

       -V     Print version number and usage then exit.

       -x pid Tell  sadc  to  report  statistics  for the process
              whose PID is pid.

       -X pid Tell sadc to report statistics for the  child  pro­
              cesses  of  the process whose PID is pid.  The SELF
              keyword  indicates  that  statistics  are   to   be
              reported  for  the child processes of the sadc pro­
              cess itself.


EXAMPLES

       /usr/lib/sa/sadc 1 10 /tmp/datafile
              Write 10 records of one  second  intervals  to  the
              /tmp/datafile binary file.


BUGS

       /proc  filesystem  must be mounted for the sadc command to


       All the statistics are not necessarily available,  depend­
       ing on the kernel version used.


FILES

       /var/log/sa/sadd
              Indicate  the daily data file, where the dd parame­
              ter is a number representing the day of the  month.

       /proc contains various files with system statistics.


AUTHOR

       Sebastien Godard <sebastien.godard@wanadoo.fr>


SEE ALSO

       sar(1), sa1(8), sa2(8), mpstat(1), iostat(1), vmstat(8)

       http://perso.wanadoo.fr/sebastien.godard/


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