pmclient(1)

NAME

   pmclient, pmclient_fg - a simple performance metrics client

SYNOPSIS

   pmclient  [-a  archive]  [-h  host]  [-n pmnsfile] [-P] [-S numsec] [-s
   samples] [-t interval] [-Z timezone] [-z]

DESCRIPTION

   pmclient and pmclient_fg are simple clients that  use  the  Performance
   Metrics  Application Programming Interface (PMAPI) to report some high-
   level system performance metrics.

   The real value of these tools is as sample clients using the  PMAPI(3),
   interfaces  and  to  this  end  the  source  code  is included with the
   Performance Co-Pilot (PCP) package (see PCPIntro(1)), and is  typically
   installed in /usr/share/pcp/demos/pmclient.

   The  pmclient_fg  program  differs  to  pmclient  in  that  it uses the
   fetchgroup API extension to the PMAPI, see pmFetchGroup(3).

   Normally pmclient operates on the distributed Performance Metrics  Name
   Space  (PMNS),  however  if  the  -n option is specified an alternative
   local PMNS is loaded from the file pmnsfile.

   Unless directed to another host by the -h option, or to an  archive  by
   the  -a option, pmclient will contact the Performance Metrics Collector
   Daemon (PMCD) on the local host to  obtain  the  required  information.
   The  argument  to  -a is a comma-separated list of names, each of which
   may be the base  name  of  an  archive  or  the  name  of  a  directory
   containing  one  or  more archives.  The -a and -h options are mutually
   exclusive.

   By default, pmclient reports the time of day  according  to  the  local
   timezone  on  the  system where pmclient is run.  The -Z option changes
   the timezone to timezone in the format of the environment  variable  TZ
   as  described in environ(7).  The -z option changes the timezone to the
   local timezone at the host  that  is  the  source  of  the  performance
   metrics, as identified via either the -h or -a options.

   Other options control the specific information to be reported.

   -P     The  default  behavior  for  replaying  a set of archives, is to
          replay at full speed.  The -P option may be used in  conjunction
          with a set of archives, to request that the prevailing real-time
          delay be applied between samples (see -t) to effect a pause.

   -S numsec
          The -S option may be used in conjunction with a set of  archives
          to  request  that  display start at the time numsec seconds from
          the start of the set of archives.

   -s samples
          The argument  samples  defines  the  number  of  samples  to  be
          retrieved and reported.  If samples is 0 or -s is not specified,
          pmclient will sample and report continuously (in real time mode)
          or until the end of the set of PCP archives (in archive mode).

   -t interval
          The  default  update interval may be set to something other than
          the default 5 seconds.  The interval argument follows the syntax
          described  in  PCPIntro(1),  and  in the simplest form may be an
          unsigned integer (the implied units in this case are seconds).

   The output from pmclient is directed to standard output, and lists

   +  Aggregate CPU utilization, in the range 0 to 1.

   +  If the system has more than 1 CPU, the ordinal number of the busiest
      CPU, in the range 0 to ...

   +  If  the  system  has  more  than  1 CPU, the CPU utilization for the
      busiest CPU.

   +  Real free memory in Mbytes.

   +  Aggregate physical disk I/O operations per second (IOPS).

   +  Load average over the last 1 minute and over the last 15 minutes.

FILES

   $PCP_DEMOS_DIR/pmclient
             source code, documentation, configuration files and  Makefile
             when the PCP development package is installed

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  configuration
   file, as described in pcp.conf(5).

SEE ALSO

   PCPIntro(1),    pmcd(1),    pmchart(1),   pmdumptext(1),   pmgenmap(1),
   pminfo(1), pmrep(1), pmstat(1),  pmval(1),  PMAPI(3),  pmFetchGroup(3),
   pcp.conf(5) and pcp.env(5).

DIAGNOSTICS

   All  are  generated  on  standard  error,  and are intended to be self-
   explanatory.

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