# Logstash Memory Requirements and JVM Sizing

**URL:** https://discuss.elastic.co/t/logstash-memory-requirements-and-jvm-sizing/227072
**Category:** Logstash
**Created:** [April 8, 2020, 7:49am UTC](https://discuss.elastic.co/t/logstash-memory-requirements-and-jvm-sizing/227072 "2020-04-08T07:49:26Z")
**Posts on this page:** 1
**Showing post:** 6

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### Author: ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [April 9, 2020, 9:47am UTC](https://discuss.elastic.co/t/logstash-memory-requirements-and-jvm-sizing/227072/6 "2020-04-09T09:47:51Z")

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Given that UDP does not guarantee ordering nor delivery I do not think it makes any sense to have a multiline filter in place.

There have been some threads on tuning UDP performance in Logstash in the forum, e.g. [this one](https://discuss.elastic.co/t/dropped-udp-packets-on-logstash-inputs-3-different-udp-inputs/146922) and [this one](https://discuss.elastic.co/t/increase-udp-input-plugin-performance/130798/3), so I would recommend reviewing these.

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