Gaps in graphs (250+ devices)

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Hello. We have a problem with gaps when there are 250+ devices. Can anybody help?

Component Version
LibreNMS 1.54
DB Schema 2019_07_03_132417_create_mpls_saps_table (139)
PHP 7.3.9
MySQL 5.6.45
RRDTool 1.7.2


[OK] Composer Version: 1.9.0
[OK] Dependencies up-to-date.
[OK] Database connection successful
[OK] Database schema correct

Typically when we see this, it’s because the polling server cant keep up. Might try to add additional pollers or increase the server specs if a VM.

Thank you.

Hi Kathy_kathy
What solution did you implement to resolve your problem?

  1. Decrease polling interval? Reverse of
  2. Add additional pollers? See
  3. Add resources to your VM?
  4. Distributed pollers? See

I distributed pollers for 2 groups (servers and network devices), it got better but not at all. I don’t know if I could reopen this topic.

For the first group (548 devices) it takes 350-400 +/- sec, but sometimes it can be successfully drawn in graphs.
For the second group (71 devices) it takes 200 +/- sec and most of the time it’s ok with graphs, but not all the time.

I suppose there are some polling problems because of bad discovering too.
I’m trying to disable some poller and discovery modules, but it still takes too much time:
614 devices discovered in 33551 secs

Unfortunately, the problem is not solved.