NAME

       pmiPutMark - write a <mark> record to a PCP archive

C SYNOPSIS

       #include <pcp/pmapi.h>
       #include <pcp/import.h>

       int pmiPutMark(void);

       cc ... -lpcp_import -lpcp

Perl SYNOPSIS

       use PCP::LogImport;

       pmiPutMark();

DESCRIPTION

       As  part of the Performance Co-Pilot Log Import API (see LOGIMPORT(3)), pmiPutMark writes a <mark> record
       to the current PCP output archive.  This is required when there is a temporal discontinuity  between  the
       current  input  source  and  the  next input source, if any, and should be called after the final call to
       pmiWrite(3) for the current input.  If there is no next input to be processed or no temporal gap  between
       sources, then the <mark> record is not required.

       The  <mark>  record  is  used  to  signify a temporal gap, so that when replaying the output PCP archive,
       interpolation of metric values should not be performed between the last timestamp in  the  current  input
       source to the first timestamp in the next input source, i.e. across the <mark> record.

DIAGNOSTICS

       pmiPutMark  returns  zero  on  success  else a negative value that can be turned into an error message by
       calling pmiErrStr(3).

SEE ALSO

       LOGIMPORT(3),  pmiAddInstance(3),   pmiAddMetric(3),   pmiErrStr(3),   pmiPutResult(3),   pmiPutValue(3),
       pmiPutValueHandle(3) and pmiWrite(3).