Memory Usage graph reports error when >68 hosts are selected

Percona Monitoring and Management (PMM) PMM 1.x
41

the latest idea…

100 - 100 * (node_memory_MemAvailable{instance=~"$host"} or (node_memory_MemFree{instance=~"$host"} + node_memory_Buffers{instance=~"$host"} + node_memory_Cached{instance=~"$host"})) / (node_memory_MemTotal{instance=~"$host"} + 0.1)
42

This one works flawlessly

43

thank you!

I created pull request [URL]https://github.com/percona/grafana-dashboards/pull/16[/URL]

44

Hi Mykola,
today I had the chance to upgrade all of our PMM server deployments to version 1.1.4, but I see that the fix for this issue hasn’t been merged.
The last query you sent me works as expected even with an high number of nodes:


100 - 100 * (node_memory_MemAvailable{instance=~"$host"} or (node_memory_MemFree{instance=~"$host"} + node_memory_Buffers{instance=~"$host"} + node_memory_Cached{instance=~"$host"})) / (node_memory_MemTotal{instance=~"$host"} + 0.1)

But by default the Grafana dashboard has this instead:


(node_memory_MemTotal{instance=~"$host"} - (node_memory_MemAvailable{instance=~"$host"} or (node_memory_MemFree{instance=~"$host"} + node_memory_Buffers{instance=~"$host"} + node_memory_Cached{instance=~"$host"}))) / node_memory_MemTotal{instance=~"$host"} * 100

which breaks the graph.

Could you please help?

Thanks

45

Hi,

I asked PMM Team to prioritize this pull request, so now it is reviewed and merged (fixed).
So new code (with fix) will be avaiable in the next 1.1.5 release.

46

Thanks, very appreciated.