# Slowness in cluster

**URL:** https://discuss.elastic.co/t/slowness-in-cluster/71726
**Category:** Elasticsearch
**Created:** [January 16, 2017, 12:09pm UTC](https://discuss.elastic.co/t/slowness-in-cluster/71726 "2017-01-16T12:09:53Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![Balamurali](https://avatars.discourse-cdn.com/v4/letter/b/90db22/32.png) [@Balamurali](https://discuss.elastic.co/u/Balamurali)
#### Post date: [January 16, 2017, 12:09pm UTC](https://discuss.elastic.co/t/slowness-in-cluster/71726/1 "2017-01-16T12:09:53Z")

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Hi all ,

we are using ES 1.3.7 cluster with 5 data cum master nodes,each nodes has 1.5GB heap space.

we are getting slowness while working or connecting to cluster.  
heap size looks normal but **RAM.percentage usage is increasing in large factor.**

then we bounced particular node , RAM seems fine.

after few hours ,again RAM usage start to increase.

can any one suggest permanent solution for this problem??

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 13, 2017, 12:09pm UTC](https://discuss.elastic.co/t/slowness-in-cluster/71726/2 "2017-02-13T12:09:57Z")

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