# Elasticsearch performance **URL:** \ **Category:** Elasticsearch\ **Created:** [August 20, 2021, 8:29pm UTC](https://discuss.elastic.co/t/elasticsearch-performance/282119 "2021-08-20T20:29:08Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![dgastudio](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dgastudio/32/90362_2.png) [@dgastudio](https://discuss.elastic.co/u/dgastudio)\ **Post date:** [August 20, 2021, 8:29pm UTC](https://discuss.elastic.co/t/elasticsearch-performance/282119/1 "2021-08-20T20:29:08Z")
Hello my instance (single node) - m6g.large 2cpu 8ram - elastic version : 7.14.0 - elastic is hiden by nginx proxy when trying to do a **batch index** operation (about 2000 items in one batch), and, in the same time, i'm doing a lot (5-10 request per sec) of **single index** operations with refresh set to FALSE, the batch index process fails "no alive nodes found in your cluster in..." any advice about how to optimize this process? ---
**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:** [August 21, 2021, 6:47am UTC](https://discuss.elastic.co/t/elasticsearch-performance/282119/2 "2021-08-21T06:47:51Z")
What is the full output of the [cluster stats API](https://www.elastic.co/guide/en/elasticsearch/reference/7.13/cluster-stats.html)? What type and size of storage are you using? What is the average size of your documents? Is there anything in the Elasticsearch logs around restarts or garbage collection? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [September 18, 2021, 6:48am UTC](https://discuss.elastic.co/t/elasticsearch-performance/282119/3 "2021-09-18T06:48:29Z")
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