HP-UX Reference (11i v3 07/02) - 4 File Formats (vol 8)

n
nettlgen.conf(4) nettlgen.conf(4)
default size is 8192 bytes (specified by 8), which is split into thirty-two 256-byte blocks. The first block is
reserved by the system, leaving 31 blocks for log messages. Each log message starts on a new block, taking
64 bytes of overhead. In addition, each block takes 8 bytes of overhead. The largest message that can be
stored using the default size is 7624 bytes ((31 * 256) - (31 * 8) - 64). Most log network messages are fairly
small, so choosing 8K of buffer is sufficient for the network logging facility to keep up with a large volume
of messages.
The Maximum Log File Space determines the maximum logging file space to be allowed. Log files are
split into two parts. When an individual log file reaches one-half of the maximum specified here, the net-
work logging system deletes any existing old file, renames the current file to the old file, and starts a new
file. The default specification allows for 1 Megabyte of total network log file storage (each file does not
exceed 500K bytes). Since logging is usually infrequent and network log messages are fairly small, this
should be more than adequate for all needs. The rate at which the file space fills up depends on what level
of network logging is turned on for each subsystem, the volume of network traffic, frequency of connections,
etc; and is very difficult to predict.
The Console Filter File specifies the name of the file containing formatter filters used for console logging.
This file contains filters that control the logged information displayed on the console. The syntax of this file
is the same as the filter configuration files that are used with the
netfmt command. See netfmt(1M) for
more details on filter configuration files.
If the console filter file does not exist, the specified file is created with a default set of filters which will
display DISASTER messages on the console. If the console filter file does exist and contains a time_from
filter, the time_of_day and day_of_year fields in the filter will be updated every time
nettl is started.
The Console Filter File field is optional. If omitted the default file
/var/adm/conslog.opts
will
be used.
Subsystem Record
The subsystem record defines the information for that subsystem, and has ten fields including the tag field.
The fields are separated by colons (
: ); thus no field can contain a colon. An empty field can be represented
by the string NULL. NOTE: the information in the subsystem records should only be changed by the sub-
system using the nettlconf command during system installation. Users should not change this infor-
mation unless directed by a Hewlett-Packard support representative.
Subsystem record fields are as follows:
Field
Number Name Description
1 tag Contains SS tag string.
Network tracing/logging facility supports sub-
systems in the range 0 - 511. This number is set
by the HP factory and must not be changed.
2 Subsystem ID
A text string consisting of letters, numbers, and
the underscore character. The string is set at
the factory and must not be changed.
3 Subsystem Mnemonic
Logging level for the subsystem when the net-
work tracing and logging facility is initialized.
4 Initial Log Level
Set to s if the subsystem is streams based and
exists in the kernel, k if the subsystem exists in
the kernel and non-streams based, u if neither.
5 Subsystem Type
Name of the shared library file containing the
subformatter functions listed below.
6 Subformatter Shared Library
Basename of the message catalog to use when
formatting data for this subsystem.
7 Subformatter Message Catalog
276 Hewlett-Packard Company − 2 − HP-UX 11i Version 3: February 2007