PMDALUSTERCOMM(1)					      General Commands Manual						 PMDALUSTERCOMM(1)

NAME

       pmdalustrecomm - Lustre filesystem comms performance metrics domain agent (PMDA)

SYNOPSIS

       $PCP_PMDAS_DIR/lustrecomm/pmdalustrecomm [-d domain] [-l logfile] [-U username]

DESCRIPTION

       pmdalustrecomm  is  a Performance Metrics Domain Agent (PMDA) which extracts performance metrics from the Linux procfs filesystem about the
       state of various aspects of the Lustre filesystem.

       The lustrecomm PMDA exports metrics that focus on distributed communication in the filesystem, including metrics related to timeouts,  net-
       work drops, send/recv information and route lengths.  However, it also covers the memory use of some of the Lustre filesystem components.

       A brief description of the pmdalustrecomm command line options follows:

       -d   It	is  absolutely crucial that the performance metrics domain number specified here is unique and consistent.  That is, domain should
	    be different for every PMDA on the one host, and the same domain number should be used for the same PMDA on all hosts.

       -l   Location of the log file.  By default, a log file named lustrecomm.log is written in the current directory of  pmcd(1)  when  pmdalus-
	    trecomm  is started, i.e.  $PCP_LOG_DIR/pmcd.  If the log file cannot be created or is not writable, output is written to the standard
	    error instead.

       -U   User account under which to run the agent.	The default is the unprivileged "pcp" account in current versions of  PCP,  but  in  older
	    versions the superuser account ("root") was used by default.

INSTALLATION

       If you want access to the names, help text and values for the lustrecomm performance metrics, do the following as root:

	    # cd $PCP_PMDAS_DIR/lustrecomm
	    # ./Install

       If you want to undo the installation, do the following as root:

	    # cd $PCP_PMDAS_DIR/lustrecomm
	    # ./Remove

       pmdalustrecomm  is launched by pmcd(1) and should never be executed directly.  The Install and Remove scripts notify pmcd(1) when the agent
       is installed or removed.

FILES

       $PCP_PMCDCONF_PATH
		 command line options used to launch pmdalustrecomm
       $PCP_PMDAS_DIR/lustrecomm/help
		 default help text file for the lustrecomm metrics
       $PCP_PMDAS_DIR/lustrecomm/Install
		 installation script for the pmdalustrecomm agent
       $PCP_PMDAS_DIR/lustrecomm/Remove
		 undo installation script for the pmdalustrecomm agent
       $PCP_LOG_DIR/pmcd/lustrecomm.log
		 default log file for error messages and other information from pmdalustrecomm

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 configura-
       tion file, as described in pcp.conf(5).

SEE ALSO

       PCPIntro(1), pmcd(1), pcp.conf(5) and pcp.env(5).

Performance Co-Pilot							PCP							 PMDALUSTERCOMM(1)