генератор PMDA для второго пилота (Performance Co-Pilot PMDA Generator)
Имя (Name)
genpmda - Performance Co-Pilot PMDA Generator
Синопсис (Synopsis)
genpmda [-dv] [-D domain] [-n pmns] [-o dir] [-s stdpmid] [-t
topdir] -c config -i IAM
Описание (Description)
genpmda is a rapid application development tool for creating new
Performance Metrics Domain Agents, see PMDA(3). It provides a
very easy and efficient way to extend the Performance Co-pilot
(PCP) with new performance metrics without needing to understand
the low level details of how PMDAs are constructed.
genpmda reads a config file containing an augmented Performance
Metrics Name Space, see PMNS(5), and automatically generates
virtually all of the source code to implement a fully functional
PMDA, including the Makefile, name space, support scripts for
configuring the new PMDA, and the metrics help text. Fairly
simple PMDAs can be automatically generated from the config file
without writing any additional code. More complicated PMDAs,
e.g. containing multiple instance domains, require only the
refresh methods for the instance domains to be written manually.
An example of the config file format accepted by genpmda is given
below.
Параметры (Options)
Required options:
-c config
input config file, see example below
-i IAM
PMDA name IAM, should appear in stdpmid or the -D option
must be used to specify a domain.
Other options:
-d generate an Install script for a daemon PMDA (default is
DSO)
-D domain
use domain number in the generated pmns and domain.h (if -s
is not given)
-n pmns
use pmns as root of the namespace (default matches -i flag)
-o dir
use dir for generated source code, default ./generated
-s stdpmid
path to stdpmid (default ../../pmns/stdpmid)
-t topdir
use topdir in generated GNUmakefile, default ../../..
-v print verbose messages about what genpmda is doing.
Example:
Generate an "example" PMDA using domain 99:
genpmda -D 99 -v -i EXAMPLE -c example.conf
Here is example.conf config file (for the required -c option):
example {
metric
}
example.metric {
## metric string
## pmid EXAMPLE:CLUSTER:0
## indom PM_INDOM_NULL
## type PM_TYPE_STRING
## units PMDA_PMUNITS(0,0,0,0,0,0)
## semantics PM_SEM_DISCRETE
## briefhelptext one line help text for example.metric.string
## helptext long help text for example.metric.string
## helptext This is the second line of the long help text
## helptext and this is the third line.
## fetch function example_string_fetch_callback
## code atom->cp = "hello world";
## code return 1;
## endmetric
}
Окружение PCP (PCP environment)
Environment variables with the prefix PCP_ are used to
parameterize the file and directory names used by PCP. On each
installation, the file /etc/pcp.conf contains the local values
for these variables. The $PCP_CONF variable may be used to
specify an alternative configuration file, as described in
pcp.conf(5).
Смотри также (See also)
pmcd(1), PMDA(3), pcp.conf(5), pcp.env(5) and PMNS(5).
