pmlogcheck(1) [centos man page]
PMLOGCHECK(1) General Commands Manual PMLOGCHECK(1) NAME
pmlogcheck - checks for invalid data in a PCP archive SYNOPSIS
pmlogcheck [-lz] [-n pmnsfile] [-S start] [-T finish] [-Z timezone] archive DESCRIPTION
pmlogcheck prints information about the nature of any invalid data which it detects in a PCP archive. Of particular interest are wrapped values for metrics which are expected to have monotonically increasing values. The archive has the base name archive and must have been previously created using pmlogger(1). Normally pmlogcheck operates on the default Performance Metrics Namespace (pmns(5)), however if the -n option is specified an alternative namespace is loaded from the file pmnsfile. The command line options -S and -T can be used to specify a time window over which metrics should be summarized. These options are common to many Performance Co-Pilot tools and are fully described in PCPIntro(1). The -l option prints the archive label, showing the log format version, the time and date for the start and (current) end of the archive, and the host from which the performance metrics values were collected. By default, pmlogcheck reports the time of day according to the local timezone on the system where pmlogcheck is run. The -Z option changes the timezone to timezone in the format of the environment variable TZ as described in environ(5). The -z option changes the time- zone to the local timezone at the host that is the source of the performance metrics, as specified in the label record of the archive log. OUTPUT FORMAT
For each metric having ``counter'' semantics (i.e. the metric is expected to increase monotonically) which has been detected as having wrapped at some point in the archive, pmlogcheck produces output describing the metric name (with instance identifiers where appropriate), the internal storage type for the metric, the value of the metric before the counter wrap (with its associated timestamp), and the value of the metric after the wrap (also with a timestamp). pmlogcheck produces two different timestamp formats, depending on the interval over which it is run. For an interval greater than 24 hours, the date is displayed in addition to the time at which the counter wrap occurred. If the extent of the data being checked is less than 24 hours, a more precise format is used (time is displayed with millisecond precision, but without the date). FILES
$PCP_VAR_DIR/pmns/* default PMNS specification files $PCP_LOG_DIR/pmlogger/hostname default directory for PCP archives containing performance data collected from the host hostname. 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), pmdumplog(1), pmlogextract(1), pmlogger(1), pmlogmerge(1), pmlogsummary(1), pmval(1), pcp.conf(5), pcp.env(5) and pmns(5). DIAGNOSTICS
All are generated on standard error and are intended to be self- explanatory. Performance Co-Pilot PCP PMLOGCHECK(1)
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PMPROBE(1) General Commands Manual PMPROBE(1) NAME
pmprobe - lightweight probe for performance metrics SYNOPSIS
pmprobe [-fIiLVvz] [-a archive] [-h hostname] [-K spec] [-n pmnsfile] [-O time] [-Z timezone] [metricname ...] DESCRIPTION
pmprobe determines the availability of performance metrics exported through the facilities of the Performance Co-Pilot (PCP). The metrics of interest are named in the metricname arguments. If metricname is a non-leaf node in the Performance Metrics Name Space (pmns(5)), then pmprobe will recursively descend the PMNS and report on all leaf nodes. If no metricname argument is given, the root of the namespace is used. The output format is spartan and intended for use in wrapper scripts creating configuration files for other PCP tools. By default, there is one line of output per metric, with the metric name followed by a count of the number of available values. Error conditions are encoded as a negative value count (as per the PMAPI(3) protocols, but may be decoded using pmerr(1)) and followed by a textual description of the error. Unless directed to another host by the -h option, pmprobe will contact the Performance Metrics Collector Daemon (PMCD) on the local host. The -a option causes pmprobe to use the specified archive rather than connecting to a PMCD. The -a and -h options are mutually exclusive. The -L option causes pmprobe to use a local context to collect metrics from PMDAs on the local host without PMCD. Only some metrics are available in this mode. The -a,-h and -L options are mutually exclusive. Normally pmprobe operates on the distributed Performance Metrics Name Space (PMNS), however, if the -n option is specified an alternative local PMNS file is loaded from the file pmnsfile. Other options control the output of additional information when one or more values is available. -f When used with -i or -I the set of instances reported will be all of those known at the source of the performance data. By default the set of reported instances are those for which values are currently available, which may be smaller than the set reported with -f. -I Report the external identifiers for each instance. The literal string PM_IN_NULL is reported for singular metrics. -i Report the internal identifiers for each instance. The values are in decimal and prefixed by ``?''. As a special case, the literal string PM_IN_NULL is reported for singular metrics. -K When using the -L option to fetch metrics from a local context, the -K option may be used to control the DSO PMDAs that should be made accessible. The spec argument conforms to the syntax described in __pmSpecLocalPMDA(3). More than one -K option may be used. -O When used in conjunction with an archive source of metrics and the -v option the time argument defines a time origin at which the met- rics should be fetched from the archive. Refer to PCPIntro(1) for a complete description of this option, and the syntax for the time argument. When the ``ctime'' format is used for the time argument in a -O option, the timezone becomes an issue. The default is to use the local timezone on the system where pmprobe is run. The -Z option changes the timezone to timezone in the format of the environment variable TZ as described in environ(5). The -z option changes the timezone to the local timezone at the host that is the source of the performance metrics, as identified via the -a option. -v Report the value for each instance, as per the formatting rules of pmPrintValue(3). When fetching from an archive, only those instances present in the first archive record for a metric will be displayed; see also the -O option. The -v option is mutually exclusive with either the -I or -i options. The -V option provides a cryptic summary of the number of messages sent and received across the PMAPI interface. EXAMPLES
$ pmprobe disk.dev disk.dev.read 2 disk.dev.write 2 disk.dev.total 2 disk.dev.blkread 2 disk.dev.blkwrite 2 disk.dev.blktotal 2 disk.dev.active 2 disk.dev.response 2 $ pmprobe -I disk.dev.read disk.dev.write disk.all.total disk.dev.read 2 "dks0d1" "dks0d2" disk.dev.write 2 "dks0d1" "dks0d2" disk.all.total 1 PM_IN_NULL $ pmprobe -v pmcd.numagents pmcd.version pmcd.control.timeout pmcd.numagents 1 9 pmcd.version 1 "2.0 beta-1" pmcd.control.timeout 1 5 $ pmprobe -v disk.dev.total disk.all.total disk.dev.total -1012 Unknown metric name disk.all.total 1 4992466 FILES
$PCP_VAR_DIR/pmns/* default PMNS specification files 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), pmdumplog(1), pminfo(1), PMAPI(3), pmErrStr(3), __pmSpecLocalPMDA(3), pcp.conf(5), pcp.env(5) and pmns(5). Performance Co-Pilot PCP PMPROBE(1)