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pmstore(1) [centos man page]

PMSTORE(1)						      General Commands Manual							PMSTORE(1)

NAME
pmstore - modify performance metric values SYNOPSIS
pmstore [-h host] [-i instances] [-n pmnsfile] metricname value DESCRIPTION
Under certain circumstances, it is useful to be able to modify the values of performance metrics, for example to re-initialize counters or to assign new values to metrics that act as control variables. pmstore changes the current values for the nominated instances of a single performance metric, as identified by metricname and the list of instance identifiers following the -i argument. instances must be a single argument, with elements of the list separated by commas and/or white space. By default all instances of metricname will be updated. Normally pmstore operates on the default Performance Metrics Name Space (PMNS), however if the -n option is specified an alternative names- pace is loaded from the file pmnsfile. Unless directed to another host by the -h option, pmstore will interact with the Performance Metric Collector Daemon (PMCD) on the local host. The interpretation of value is dependent on the syntax used in its specification and the underlying data type of metricname, as follows. 1. If the metric has an integer type, then value should be an optional leading hyphen, followed either by decimal digits or ``0x'' and some hexadecimal digits. ``0X'' is also acceptable in lieu of ``0x''. See strtol(3C) and the related routines. 2. If the metric has a floating point type, then value should be either in the form of an integer described above, or a fixed point num- ber, or a number in scientific notation. See strtod(3C). 3. If the metric has a string type, then value is interpreted as a literal string of ASCII characters. 4. If the metric has any other type (i.e. PM_TYPE_EVENT or PM_TYPE_AGGREGATE) then no encoding of value from the command line makes sense, and the values of these metrics cannot be modified with pmstore. The output reports the old value and the new value for each updated instance of the requested metric. 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
pmcd(1), pminfo(1), pmval(1), strtod(3C) and strtol(3C). DIAGNOSTICS
Two messages indicate a mismatch between the internal data type for metricname and the value provided. The value "???" is out of range for the data type (PM_TYPE_...) The value "???" is incompatible with the data type (PM_TYPE_...) Performance Co-Pilot PCP PMSTORE(1)

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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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