pmdaxfs(1) [centos man page]
PMDAXFS(1) General Commands Manual PMDAXFS(1) NAME
pmdaxfs - XFS filesystem performance metrics domain agent (PMDA) SYNOPSIS
$PCP_PMDAS_DIR/xfs/pmdaxfs [-d domain] [-l logfile] DESCRIPTION
pmdaxfs is a Performance Metrics Domain Agent (PMDA) which extracts performance metrics describing the state of the XFS filesystem from the Linux kernel. The xfs PMDA exports metrics that measure information about metadata buffer usage, the journal, btree operations, inode operations, extended attributes, directories, quotas, read and write operation counts and of course throughput. The PMDA provides a facility to reset the values of all counters to zero using pmstore(1) with the xfs.control.reset metric. A brief description of the pmdaxfs 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 xfs.log is written in the current directory of pmcd(1) when pmdaxfs 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. INSTALLATION
The xfs PMDA is installed and available by default on Linux. If you want to undo the installation, do the following as root: # cd $PCP_PMDAS_DIR/xfs # ./Remove If you want to establish access to the names, help text and values for the XFS performance metrics once more, after removal, do the follow- ing as root: # cd $PCP_PMDAS_DIR/xfs # ./Install pmdaxfs 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 pmdaxfs $PCP_PMDAS_DIR/xfs/help default help text file for the xfs metrics $PCP_PMDAS_DIR/xfs/Install installation script for the pmdaxfs agent $PCP_PMDAS_DIR/xfs/Remove undo installation script for the pmdaxfs agent $PCP_LOG_DIR/pmcd/xfs.log default log file for error messages and other information from pmdaxfs 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), pmstore(1), pcp.conf(5) and pcp.env(5). Performance Co-Pilot PCP PMDAXFS(1)
Check Out this Related Man Page
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)