pmdaib(1)
NAME
pmdaib - ib performance metrics domain agent (PMDA)
SYNOPSYS
$PCP_PMDAS_DIR/ib/pmdaib [-c configFile] [-D debug] [-d domain] [-l
logfile] [-w]
DESCRIPTION
pmdaib is a Performance Metrics Domain Agent (PMDA) which exports
information and performance metrics about local Infiniband HCAs and
local or remote Infiniband GUIDs.
A brief description of the pmdaib command line options follows:
- -c Location of the config file. By default, the config file is named
- $PCP_PMDAS_DIR/ib/config. See CONFIG FILE for more information.
- -D A debug values, as specified by pmdbg (1)
- -d Specify an alternate performance metrics domain number. Almost
- never necessary.
- -l Location of the log file. By default, a log file named ib.log is
- written to $PCP_LOG_DIR/pmcd. If the log file cannot be created or is not writable, output is written to the standard error instead.
- -w Write out the default config file to $PCP_PMDAS_DIRS/ib and exit
- immediately. The written config file will contain the local HCA ports. It will not overwrite an existing file. This argument should only be used to create the template config file and should never appear in pmcd.conf. See CONFIG FILE for more information on the file format and on monitoring remote GUIDs.
CONFIG FILE
By default, the PMDA will operate without using a config file. In this
mode of operation the local HCA ports will be monitored. Note that if
a new HCA is added to the machine that instance domain naming may
change because it will always be based on the kernel's naming.
In cases where this is not acceptable, or in the case where monitoring
remote Infiniband ports is required, a config file must be created. A
"template" file can be created by running the pmdaib daemon with the -w
argument. This will create a config file with the local ports and
GUIDs.
If the config file is executable then it will be run and the output
will be used as the config file.
The config file is composed of line-based records. Blank lines and
everything after the hash (#) character are ignored. Each line has 6
fields:
[instName] [portGUID] [portNum] via [localPortName]:[localPortNum]
The first field is used to give a static instance name to the Infiniband port that has a specific GUID. All of the other fields must be
properly specified in order to monitor a particular port.
For example, to monitor port 1 of the local HCA called 'mthca0' a possible config file line would be:
myPort1 0xdeadbeef01234567 1 via mthca0:1
Remote ports can be easily monitored by specifying the GUID of the HCA
or switch and specifying the remote port number. The localPortName:localPortNum tuple specifies which local HCA and port to use as
the "first hop" in contacting the remote GUID. E.g., to monitor port
13 of a remote switch which is connected to the fabric on the first
port of the second HCA:
switch13 0xfeeffeefabcdabcd 13 via mthca1:1