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Displaying posts with tag: query time histogram (reset)
Percona Monitoring Plugins fix: Query Response Time

After switching from the Better Cacti Templates to the Percona Monitoring Plugins we suffered from the Query Response Time and the Query Time Histogram not graphing at all.

It took me a while to figure out why our new instance wasn’t graphing: the response time query was performing and the script was picking up its values. Also the rrd files were created but for some bizarre reason all values were set to “NaN”, in rrd/cacti terms: Not a Number. If you search on that subject you will come across a lot of (forum) postings stating you need to change your graph type to “GAUGE” or change the MIN/MAX values for your data templates. Strange as this was already set to a minimum of 0 and a maximum of an unsigned 64 bit integer.

After running the …

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