1PMDALUSTERCOMM(1) General Commands Manual PMDALUSTERCOMM(1)
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6 pmdalustrecomm - Lustre filesystem comms performance metrics domain
7 agent (PMDA)
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10 $PCP_PMDAS_DIR/lustrecomm/pmdalustrecomm [-d domain] [-l logfile] [-U
11 username]
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14 pmdalustrecomm is a Performance Metrics Domain Agent (PMDA) which
15 extracts performance metrics from the Linux procfs filesystem about the
16 state of various aspects of the Lustre filesystem.
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18 The lustrecomm PMDA exports metrics that focus on distributed communi‐
19 cation in the filesystem, including metrics related to timeouts, net‐
20 work drops, send/recv information and route lengths. However, it also
21 covers the memory use of some of the Lustre filesystem components.
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23 A brief description of the pmdalustrecomm command line options follows:
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25 -d It is absolutely crucial that the performance metrics domain num‐
26 ber specified here is unique and consistent. That is, domain
27 should be different for every PMDA on the one host, and the same
28 domain number should be used for the same PMDA on all hosts.
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30 -l Location of the log file. By default, a log file named lus‐
31 trecomm.log is written in the current directory of pmcd(1) when
32 pmdalustrecomm is started, i.e. $PCP_LOG_DIR/pmcd. If the log
33 file cannot be created or is not writable, output is written to
34 the standard error instead.
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36 -U User account under which to run the agent. The default is the
37 unprivileged "pcp" account in current versions of PCP, but in
38 older versions the superuser account ("root") was used by default.
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41 If you want access to the names, help text and values for the lus‐
42 trecomm performance metrics, do the following as root:
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44 # cd $PCP_PMDAS_DIR/lustrecomm
45 # ./Install
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47 If you want to undo the installation, do the following as root:
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49 # cd $PCP_PMDAS_DIR/lustrecomm
50 # ./Remove
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52 pmdalustrecomm is launched by pmcd(1) and should never be executed
53 directly. The Install and Remove scripts notify pmcd(1) when the agent
54 is installed or removed.
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57 $PCP_PMCDCONF_PATH
58 command line options used to launch pmdalustrecomm
59 $PCP_PMDAS_DIR/lustrecomm/help
60 default help text file for the lustrecomm metrics
61 $PCP_PMDAS_DIR/lustrecomm/Install
62 installation script for the pmdalustrecomm agent
63 $PCP_PMDAS_DIR/lustrecomm/Remove
64 undo installation script for the pmdalustrecomm agent
65 $PCP_LOG_DIR/pmcd/lustrecomm.log
66 default log file for error messages and other information
67 from pmdalustrecomm
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70 Environment variables with the prefix PCP_ are used to parameterize the
71 file and directory names used by PCP. On each installation, the file
72 /etc/pcp.conf contains the local values for these variables. The
73 $PCP_CONF variable may be used to specify an alternative configuration
74 file, as described in pcp.conf(5).
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77 PCPIntro(1), pmcd(1), pcp.conf(5) and pcp.env(5).
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81Performance Co-Pilot PCP PMDALUSTERCOMM(1)