1AND.CONF(5) File Formats AND.CONF(5)
2
6 /etc/and/and.conf - general configuration parameters for the auto nice
7 daemon.
8
12 This manual page documents and.conf for and version 1.2.2.
13
17 This is the general configuration file for and. It stores settings
18 like the default nice level, the renice intervals, the three stages of
19 renicing, and the affinity of the priority database, i.e. the weight of
20 (user, group, command) when resolving nice levels from the database.
21 These settings are described below.
22 Comments start with a # in the first column. Empty lines are ignored.
24 Unlike with other configuration files, lines cannot be concatenated
25 with a backslash. Furthermore, this file is case sensitive.
26 and allows for host-specific sections in the configuration file. These
28 work as lines of the form on somehost and work as follows: the parser
29 determines if the host name (as returned by gethostname) matches the
30 extended regular expression that follows the on keyword. If it does, it
31 just keeps processing the file as if nothing had happened. If it does
32 not match, however, everything up to the next on keyword is skipped. So
33 if you want to end a host-specific section, you must write on .*
34 (which matches all hosts) to switch back to normal.
35 Don't forget to kill -HUP the auto nice daemon to enable the changes.
37
41 defaultnice
42 The default nice level. A number between 0 and 19. Jobs for which
43 no entry can be found in /etc/and/and.priorities are reniced to
44 this level, regardless of the CPU time they've used so far. If you
45 prefer to renice unknown jobs gradually, you can do so by supply‐
46 ing three asterisks as (user, group, command) tuple in
47 /etc/and/and.priorities. The default nice level is 0
48 interval
51 The default interval between nice checks of the auto nice daemon,
52 in seconds. This value can be overridden by the -i command-line
53 option of and. The default interval is 60 seconds.
54 lv1time
57 lv2time
59 lv3time
61 Ranges for the nice levels. Jobs with less than lv1time seconds
62 CPU time are not reniced; jobs between lv1time and lv2time seconds
63 are reniced to the first level in an.priorities; jobs between
64 lv2time and lv3time seconds to the second level; jobs with more
65 than lv3time seconds are reniced to the third level. Defaults are
66 120 , 1200 , and 3600 seconds.
67 minuid, mingid
70 Minimum user id and group id to be considered for renicing. Pro‐
71 cesses whose user id is below minuid are left alone, as are pro‐
72 cesses with a group id of below mingid. (Note that even if you
73 set minuid to zero, root processes are left alone.)
74 affinity
77 Strategy for picking the right priority entry for a user/group/job
78 triple. The strategy is a permutation of "cgu", "c"ommand,
79 "g"roup, "u"ser. The order specifies the affinity of the priority
80 lookup method. Suppose you have an entry for all jobs of user foo,
81 another entry for all jobs of group bar, and yet another entry for
82 the command baz. Furthermore suppose user foo (who happens to
83 belong to group bar ) starts a job named baz -- which entry should
84 be chosen? This is what the affinity setting means, for example
85 "cug" means an exact match of the command has priority over both
86 an exact match of the user and the group. The default affinity is
87 "cug", which is probably sensible for most cases, since it's the
88 job which takes up CPU time, not the user or group ID.
89
93 Default Configuration
94 # This is the default configuration:
95 defaultnice 0
96 interval 60
97 lv1time 300
98 lv2time 1800
99 lv3time 3600
100 affinity cug
101 minuid 0
102 mingid 0
103 Default Configuration, with terminals
106 # Normal default configuration for all
107 defaultnice 0
108 interval 60
109 lv1time 300
110 lv2time 1800
111 lv3time 3600
112 # Hosts foo, bar, baz are terminals and must
113 # be more responsive, so earlier renice.
114 on (foo|bar)
115 lv1time 120
116 lv2time 600
117 lv3time 1200
118 on .*
119 # This is for all hosts again
120 affinity cug
121 Group-specific Hosts
124 defaultnice 0
125 interval 60
126 lv1time 300
127 lv2time 1800
128 lv3time 3600
129 # Normal affinity for all hosts.
130 affinity cug
131 # Hosts bar, baz belong to group foo, which
132 # is privilegued on these hosts, so override
133 # affinity. (Note regexp!)
134 on ba[rz]
135 affinity guc
136 on .*
137 minuid 500
138 mingid 100
139
143 /etc/and.conf
144 General configuration file. Stores default nice level, default
145 interval, the "time zones" and the database lookup affinity. This
146 is what this manual page is about.
147
151 and(8), and.priorities(5), kill(1), regex(7), renice(8)
152
156 http://and.sourceforge.net/
157
161 The auto nice daemon and this manual page were written by Patrick
162 Schemitz <schemitz@users.sourceforge.net>
163Unix 27 Mar 2005 AND.CONF(5)