[collectd] "uc_update: Value too old" error

Andreas Schuldei andreas at schuldei.org
Thu Oct 15 23:27:26 CEST 2015

i read the FAQ "I get frequent errors that a “value is too old”. What's
this about?" section.

my collectd runs on my server, no network transmission of data, just local
operation. only one collecd is running:

root     18951  0.0  0.2   1752  1072 ?        Ss   22:50   0:00
/usr/sbin/collectdmon -P /var/run/collectd.pid -- -C
root     18952  1.5  5.5 130352 28732 ?        Sl   22:50   0:08 collectd
-C /etc/collectd/collectd.conf -f

i get lots of those:

Oct 15 23:01:49 david collectd[18952]: uc_update: Value too old: name =
kessel0001.fritz.box/biosmart/gauge-Füllraumtür; value time =
1444942909.000; last cache update = 1444942909.000;

where the "last cache update" increases every 10 sec by 10sec. :-)

i restarted collectd to no avail. since this is an embedded system with
limited disk space i disabled the syslog plugin in collectd.conf, to
prevent syslog from exploding - not the right fix but a bad (temporary)

collectd seems to work fine, the rrd files get updated and all.

how can i fix this properly?
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