Hello there.
First of all, thank you ! because we are using OpenTSDB every day and it helps a lot !!
Running OpenTSDB-2.1.0.
Here is the situation :
A node is sending its cpu.pidle every minute to OpenTSDB with one tag, host.
The same node is also sending its network traffic (net.rxkb for instance) every minute with two tags, host and interface name, for each interface (8 on the node).
I first request cpu.pidle host=mynode over a month with downsampling over 30 minutes (around 42,000 datapoints) taking about 5 seconds, which is fine.
Then I request net.rxkb host=mynode interface=eth0 over the same month with the same downsampling (same number of datapoints) taking around 25 to 30 seconds !
I wonder where this huge difference is coming from ... ?
Is it from tag treatment ?
Is it from the fact that every minute, node is sending 8 datapoints for net.rxkb while 1 for cpu.pidle, thus making "net.rxkb column" way bigger on a month ?
Is there any way of solving this problem ?
Cheers.