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TimeDiff match
Type: match
Status: supported
First version: 4.6
Copyright: 2008–2009 Florian octo Forster
License: GPLv2
Manpage: collectd.conf(5)
List of Matches


The TimeDiff match compares the time of values against the time it considers to be “now” and matches those values where the times differ more than a given threshold. It is intended to be used on server instances to filter out values from machines with a wrong time setting. Since the timestamp in RRD files must be ever increasing, inserting only one value with a timestamp far in the future causes big problems. The purpose of this match is to prevent exactly this problem.


LoadPlugin "timediff"
<Chain "PreCache">
  <Rule "check_time">
    <Match "timediff">
      Future  300
      Past   3600
    Target "stop"
  Target "continue"


  • none


The TimeDiff match has been available since version 4.6.