# Ignition 8.3.0 - Custom Namespace Thread Pool Size

**URL:** <https://forum.cirrus-link.com/t/ignition-8-3-0-custom-namespace-thread-pool-size/833>\
**Category:** MQTT Modules\
**Tags:** mqtt-engine\
**Created:** [January 8, 2026, 7:28am UTC](https://forum.cirrus-link.com/t/ignition-8-3-0-custom-namespace-thread-pool-size/833 "2026-01-08T07:28:38Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![szcl](https://avatars.discourse-cdn.com/v4/letter/s/85e7bf/32.png) [@szcl](https://forum.cirrus-link.com/u/szcl)\
**Post date:** [January 8, 2026, 7:28am UTC](https://forum.cirrus-link.com/t/ignition-8-3-0-custom-namespace-thread-pool-size/833/1 "2026-01-08T07:28:38Z")

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1. Is there a way to reduce “Custom Namespace Thread Pool Size” as (I believe) it was possible in 8.1 ?

2. Would it increase overall system performance in any way? I’m running short on memory with my gateway and looking for optimalizations.

I’ve found that I there are ~500 threads in Ignition named similar to “MQTTEngineCust-103-bf452a70, id=891” with status waiting.

I have only ~70 devices sending ~0.3 messages per second so I believe 500 threads is overkill.