ATSADC(1)							       local								 ATSADC(1)

NAME

       atsadc, atsa1, atsaftp, atsahttp -- counter-collection

SYNOPSIS

       atsadc [ t n ] [ ofile ]

       atsa1 [ t n ]

       atsaftp

       atsahttp

DESCRIPTION

       System  activity-data can be gathered on special request of a user [see atsar(1) ] or automatically, on a routine basis, as described here.
       Usually the kernel maintains statistical counters that are incremented as various system actions occur. These include counters for CPU uti-
       lization, disk utilization, memory utilization and various network statistics.

       The program atsadc and the shell-script atsa1 are used to collect, save, and process these counters.

       The  program  atsadc  (the  data collector) samples system data n times with an interval of t seconds between samples, and writes in binary
       format to ofile or (default) to standard output. The sampling interval t should be greater than 1 second. If t and n are omitted, a special
       reset-record  is  written.   This  facility is used when booting to a multi-user state, to mark the time at which the counters restart from
       zero. For example, the reset-mark can be added to the daily data by the command:

       /usr/local/bin/atsadc /var/log/atsar/atsa`date +%d`

       Note that this entry is written to the /etc/rc.d/init.d/atsar file.

       The shell-script atsa1 is used to collect and store data in the binary file /var/log/atsar/atsadd where dd is the current day of the month.
       The  arguments  t and n cause records to be written n times at an interval of t seconds, or once if omitted.  Furthermore this script takes
       care that log-files older than a week are removed once a day.

       A file containing following entries should be added to the /etc/cron.d directory to produce records every 20 minutes during  working  hours
       and hourly otherwise:

       0     *	  * * 0-6 root /usr/local/bin/atsa1

       20,40 8-17 * * 1-5 root /usr/local/bin/atsa1

       See crontab(1) for details.

       The  shell-script  atsaftp counts the new transfers registered in the FTP-logfile(s) since the previous time this script was activated; the
       new counters are stored in the /var/log/atsar/ftpstat file in ASCII-format.  The names of the FTP-logfiles to be watched are  specified	in
       the /etc/atsar.conf configuration-file.

       The shell-script atsahttp counts the new transfers registered in the HTTP-logfile(s) since the previous time this script was activated; the
       new counters are stored in the /var/log/atsar/httpstat file in ASCII-format.  The names of the HTTP-logfiles to be watched are specified in
       the /etc/atsar.conf configuration-file.

       Both scripts must be activated just before the program atsadc is started, which also collects these counters.

FILES

       /var/log/atsar/atsadd

       Daily data file, where dd are digits representing the day of the month.

SEE ALSO

       atsar(1), crontab(1)

AUTHOR

       Gerlof Langeveld, AT Computing (gerlof@ATComputing.nl)

AT Computing							     July 2004								 ATSADC(1)