I know there is a config java additional arg for project scan frequency, and it used to be in the upgrade guide but I can’t find it anymore. Does someone here know what it is or where in the documentation it is? The documentation used to say something about it changing to 10 minutes in Ignition 8.…

There’s no concept of ‘scan frequency’ in 7.9, because the only ‘source of truth’ for project resources is the gateway’s internal DB. In 8.0, when resources moved to the filesystem, we put a system in place to watch the filesystem for changes to resources; if an external change is made, it’ll be de…

Ahh it was in the 8.1 doc! I was thinking it came in 8.0 so I was looking in the wrong place. May be good to add it to this page in the documentation as well: https://docs.inductiveautomation.com/display/DOC81/Gateway+Configuration+File+Reference

[image] paul-griffith: we lowered the time to scan from a hardcoded 10 seconds Nit-pick: it was never hardcoded, that system property has always existed.

TIL. Guess that makes sense, I just assumed for some reason it came in with 8.1.

Out of curiousity, does that technically mean this config option would exist in 8.0 as well?

Yes, it just has a much faster default value in 8.0.

[image] kgamble: May be good to add it to this page in the documentation as well: For prosperity, I noticed it was added! https://docs.inductiveautomation.com/display/DOC81/Gateway+Configuration+File+Reference#ProjectDirectoryScanRate

Can't find explicit documentation around automatic project scan frequency in 8.3, but looking like it isn't a thing anymore?

ah, found it mentioned here for reference: [image] Ignition does not reflect git changes until I manually call `system.project.requestScan()` Ignition 8.3 drops automatic scanning entirely. If you want it to happen automatically, you can set up a gateway timer …

Project Scan Frequency Setting

Ignition

hunterdg March 20, 2026, 4:11pm 11

ah, found it mentioned here for reference:

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