Netbox gets slower over time - unless you use it #1048

New Issue

MrUnknownDE · 2026-04-05T20:05:00+02:00

MrUnknownDE commented

2026-04-05 20:05:00 +02:00

Originally created by @telmich on 10/16/2025

NetBox Edition

NetBox Community

NetBox Version

4.4.2

Python Version

3.10

Steps to Reproduce

When running netbox, in my case in k8s and waiting a bit (hours), netbox can take 10 seconds to load.

I am using /api/status/ to check the time and most of the time it loads in < 1 second, sometimes it's 10 seconds.

If I add prometheus monitoring to monitor the behaviour, the 10 second delay goes away - it stays at at about 0.5 seconds for loading.

If I disable prometheus monitoring from the outside, the 10 second delay appears sometimes during an hour.

This smells a bit like swapping out, however the nodes do not have swap. Also, all other applications on the same node run without any delay.

It even smells as if "something" is gone from "a cache" (L1, L2, ...) netbox becomes very slow.

From what I understand, calling the /api/status endpoint does not involve database calls, so it's unlikely a performance issue in postgres.

I read about similar behaviour in https://github.com/netbox-community/netbox/issues/16454 and https://github.com/netbox-community/netbox/discussions/16684 however my version is much newer.

Any hints on what might be going wrong here are appreciated.

Expected Behavior

No random delays.

Observed Behavior

Delays are randomly going up to 10 seconds

*Originally created by @telmich on 10/16/2025* ### NetBox Edition NetBox Community ### NetBox Version 4.4.2 ### Python Version 3.10 ### Steps to Reproduce When running netbox, in my case in k8s and waiting a bit (hours), netbox can take 10 seconds to load. I am using /api/status/ to check the time and most of the time it loads in < 1 second, sometimes it's 10 seconds. If I add prometheus monitoring to monitor the behaviour, the 10 second delay goes away - it stays at at about 0.5 seconds for loading. If I disable prometheus monitoring from the outside, the 10 second delay appears sometimes during an hour. This smells a bit like swapping out, however the nodes do not have swap. Also, all other applications on the same node run without any delay. It even smells as if "something" is gone from "a cache" (L1, L2, ...) netbox becomes very slow. From what I understand, calling the /api/status endpoint does not involve database calls, so it's unlikely a performance issue in postgres. I read about similar behaviour in https://github.com/netbox-community/netbox/issues/16454 and https://github.com/netbox-community/netbox/discussions/16684 however my version is much newer. Any hints on what might be going wrong here are appreciated. ### Expected Behavior No random delays. ### Observed Behavior Delays are randomly going up to 10 seconds

MrUnknownDE closed this issue

2026-04-05 20:05:00 +02:00

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Branches Tags

main

21455-sql-indexes-audit

21357-register-model-actions

feature

20924-plugin-ui-components

21766-improve-test-coverage-for-sortable-table-columns

21157-export-template-public-models

21025-pre-render-config-contexts

21364-swagger

feature-ip-prefix-link

20911-dropdown-3

fix_module_substitution

21160-filterset

20911-dropdown-2

20044-elevation-stuck-lightmode

7604-filter-modifiers-v3

20660-script-load

19724-graphql

14884-script

19720-macaddress-interface-generic-relation

fix-19669-api-image-download

7604-filter-modifiers

19275-fixes-interface-bulk-edit

fix-17794-get_field_value_return_list

11507-show-aggregate-and-rir-on-api

9583-add_column_specific_search_field_to_tables

No Label netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox netbox

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Reference: github/netbox#1048