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/etc/and.conf

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/etc/and.conf: general configuration parameters for the auto nice daemon.

NAME
/etc/and.conf - general configuration parameters for the auto nice daemon.
VERSION
This manual page documents and.conf for and version 1.2.2.

DESCRIPTION

This is the general configuration file for and. It stores settings like the default nice level, the renice intervals, the three stages of renicing, and the affinity of the priority database, i.e. the weight of (user, group, command) when resolving nice levels from the database. These settings are described below. Comments start with a # in the first column. Empty lines are ignored. Unlike with other configuration files, lines cannot be concatenated with a backslash. Furthermore, this file is case sensitive. and allows for host-specific sections in the configuration file. These work as lines of the form on somehost and work as follows: the parser determines if the host name (as returned by gethostname) matches the extended regular expression that follows the on keyword. If it does, it just keeps processing the file as if nothing had happened. If it does not match, however, everything up to the next on keyword is skipped. So if you want to end a host-specific section, you must write on .* (which matches all hosts) to switch back to normal. Don't forget to kill -HUP the auto nice daemon to enable the changes.

SETTINGS

defaultnice The default nice level. A number between 0 and 19. Jobs for which no entry can be found in /etc/and.priorities are reniced to this level, regardless of the CPU time they've used so far. If you prefer to renice unknown jobs gradually, you can do so by supplying three asterisks as (user, group, command) tuple in /etc/and.priorities. The default nice level is 0 interval The default interval between nice checks of the auto nice daemon, in seconds. This value can be overridden by the -i command-line option of and. The default interval is 60 seconds. lv1time lv2time lv3time Ranges for the nice levels. Jobs with less than lv1time seconds CPU time are not reniced; jobs between lv1time and lv2time seconds are reniced to the first level in an.priorities; jobs between lv2time and lv3time seconds to the second level; jobs with more than lv3time seconds are reniced to the third level. Defaults are 120 , 1200 , and 3600 seconds. minuid, mingid Minimum user id and group id to be considered for renicing. Processes whose user id is below minuid are left alone, as are processes with a group id of below mingid. (Note that even if you set minuid to zero, root processes are left alone.) affinity Strategy for picking the right priority entry for a user/group/job triple. The strategy is a permutation of "cgu", "c"ommand, "g"roup, "u"ser. The order specifies the affinity of the priority lookup method. Suppose you have an entry for all jobs of user foo, another entry for all jobs of group bar, and yet another entry for the command baz. Furthermore suppose user foo (who happens to belong to group bar ) starts a job named baz -- which entry should be chosen? This is what the affinity setting means, for example "cug" means an exact match of the command has priority over both an exact match of the user and the group. The default affinity is "cug", which is probably sensible for most cases, since it's the job which takes up CPU time, not the user or group ID.

EXAMPLES

Default Configuration # This is the default configuration: defaultnice 0 interval 60 lv1time 300 lv2time 1800 lv3time 3600 affinity cug minuid 0 mingid 0 Default Configuration, with terminals # Normal default configuration for all defaultnice 0 interval 60 lv1time 300 lv2time 1800 lv3time 3600 # Hosts foo, bar, baz are terminals and must # be more responsive, so earlier renice. on (foo|bar) lv1time 120 lv2time 600 lv3time 1200 on .* # This is for all hosts again affinity cug Group-specific Hosts defaultnice 0 interval 60 lv1time 300 lv2time 1800 lv3time 3600 # Normal affinity for all hosts. affinity cug # Hosts bar, baz belong to group foo, which # is privileged on these hosts, so override # affinity. (Note regexp!) on ba[rz] affinity guc on .* minuid 500 mingid 100

FILES

/etc/and.conf General configuration file. Stores default nice level, default interval, the "time zones" and the database lookup affinity. This is what this manual page is about.
SEE ALSO
and(8), and.priorities(5), kill(1), regex(7), renice(8)
INTERNET
//and.sourceforge.net/

AUTHOR

The auto nice daemon and this manual page were written by Patrick Schemitz <schemitz@users.sourceforge.net> /ETC/AND.CONF(5)
 
 
 

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