# Indexing delays in elastic search after increase the java heap memory on logstash

**URL:** <https://discuss.elastic.co/t/indexing-delays-in-elastic-search-after-increase-the-java-heap-memory-on-logstash/374324>\
**Category:** Logstash\
**Created:** [February 10, 2025, 3:41pm UTC](https://discuss.elastic.co/t/indexing-delays-in-elastic-search-after-increase-the-java-heap-memory-on-logstash/374324 "2025-02-10T15:41:48Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![devops\_training](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/devops_training/32/131845_2.png) [@devops\_training](https://discuss.elastic.co/u/devops_training)\
**Post date:** [February 10, 2025, 3:41pm UTC](https://discuss.elastic.co/t/indexing-delays-in-elastic-search-after-increase-the-java-heap-memory-on-logstash/374324/1 "2025-02-10T15:41:48Z")

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Hi Team -

I would like to tune refresh interval and control bulk size parameters on Logstash. Could you please explain more about this parameters.