Alexander A. Klimov 8edb514fe6 *Writer: prominently log "Ignoring invalid perfdata for checkable..." only once per checkable
using a flag whether already done. That's reset on valid perfdata.

In a randomly picked customer mainlog there are 1241932 lines starting
with "[". 56817 of them say "Ignoring invalid perfdata for checkable".
2022-11-28 15:05:12 +01:00
..
2021-07-20 16:21:36 +02:00
2021-07-20 16:21:36 +02:00
2021-07-20 16:21:36 +02:00