bionic (8) and.8.gz

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NAME

       and - auto nice daemon

SYNOPSIS

       and [-htvsxf] [-i interval] [-c /path/to/and.conf] [-d /path/to/and.priorities]

VERSION

       This manual page documents and version 1.2.2.

DESCRIPTION

       The  auto  nice daemon activates itself in certain intervals and renices and even kills jobs according to
       their priority and CPU usage.

       Renice levels and kill signals can be defined in terms of users, groups, and commands. Wildcards  can  be
       specified  for  any  of these. In addition, commands can be specified using POSIX regular expressions. To
       allow for network-wide configuration and priority files, a mechanism  for  hostname-based  evaluation  is
       provided, again supporting regular expressions for specifying host names.

       Jobs owned by root are left alone. Jobs are never increased in their priority.

       Here are some real-world examples:

       A  certain  user  is  notorious  for wasting CPU with next-to-irrelevant jobs.  One line is sufficient to
       renice all of his jobs to  about  19.   This  is  a  typical  situation  for  a  LART  (Luser's  Attitude
       Readjustment Tool) like and.

       A  CPU  server  is  dedicated  to a certain group, but others may also use it when it's idle. Just define
       default nice levels of e.g. 18 and a lower nice level for the privileged group, say nice level 12.

       A certain web browser who shall remain unnamed tends to go berserk once in a while. You can configure and
       to kill -9 it after e.g. 20 CPU minutes.

COMMAND-LINE OPTIONS

       -c /path/to/and.conf
            Specifies the configuration file. If this flag is omitted, /etc/and.conf is used instead.

       -d /path/to/and.priorities
            Specifies the priority database file. If this flag is omitted, /etc/and.priorities is used instead.

       -h   Produces a short help text.

       -i interval
            Sets  the  interval  between  nice  level  checks. This flag overrides the interval specified in the
            configuration file, if any. The default interval of 60 seconds is used if neither -i nor an interval
            directive in the configuration file is given.

       -s   Log  to stdout. Without this switch, logging goes to syslog (normal operations) or ./debug.and (test
            mode). Useful for debugging config files.

       -t   Run in test mode only, i.e. don't really renice or kill anything.  In this mode, logging  goes  into
            ./debug.and instead of syslog.

       -v   Increase verbosity. For maximum verbosity, this flag can be specified multiple times. Be warned that
            this will blow up your log files, so you should use it in test mode only.

       -x   Run in full operational mode, i.e. really renice or kill things.  This is the default.

       -f   Foreground mode. Don't daemonize.

SIGNALS

       On kill -HUP the auto nice daemon will reload its configuration file and priority database.

FILES

       /etc/and.conf
            General configuration file. Stores default nice level, default interval, the "time  zones"  and  the
            database lookup affinity.

       /etc/and.priorities
            The priority database (in plain text). Contains the (user, group, command, nicelevels) tuples.

       Both files have their own manual pages.

       ./debug.and
            Contains logging and status information for debugging purposes.  Used in test mode only.

SEE ALSO

       and.conf(5), and.priorities(5), kill(1), regex(7), renice(8)

INTERNET

       http://and.sourceforge.net/

AUTHOR

       The    auto    nice    daemon    and    this    manual    page   were   written   by   Patrick   Schemitz
       <schemitz@users.sourceforge.net>