# How to control load on ES nodes **URL:** \ **Category:** Elasticsearch\ **Created:** [July 9, 2013, 11:38pm UTC](https://discuss.elastic.co/t/how-to-control-load-on-es-nodes/12731 "2013-07-09T23:38:58Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![MJR\_M](https://avatars.discourse-cdn.com/v4/letter/m/8c91f0/32.png) [@MJR\_M](https://discuss.elastic.co/u/MJR_M)\ **Post date:** [July 9, 2013, 11:38pm UTC](https://discuss.elastic.co/t/how-to-control-load-on-es-nodes/12731/1 "2013-07-09T23:38:58Z")
Hi ``` In our prod ES cluster, we have 5 nodes and I have to re-index all the ``` documents. I am doing bulk indexing through river, and while doing this load on ES nodes increase to 10 - 15+, and obviously this slows down the search. Can anyone suggest what should I do in order to bulk index through river and at the same time keep the load on nodes under control. I have to re-index 50 million documents. Regards mjr -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![radu\_gheorghe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/radu_gheorghe/32/556_2.png) [@radu\_gheorghe](https://discuss.elastic.co/u/radu_gheorghe)\ **Post date:** [July 10, 2013, 8:32am UTC](https://discuss.elastic.co/t/how-to-control-load-on-es-nodes/12731/2 "2013-07-10T08:32:13Z")
Hello, Here are a few things I would try: - decrease the number of bulk threads from the threadpool[http://www.elasticsearch.org/guide/reference/modules/threadpool/](http://www.elasticsearch.org/guide/reference/modules/threadpool/) - make bulk requests smaller - if you can change the river code, you can lower the number of concurrent bulk requests[https://github.com/elasticsearch/elasticsearch/blob/master/src/main/java/org/elasticsearch/action/bulk/BulkProcessor.java#L105](https://github.com/elasticsearch/elasticsearch/blob/master/src/main/java/org/elasticsearch/action/bulk/BulkProcessor.java#L105)from the default 1 to 0 - increase the refresh\_interval - use store throttling[http://www.elasticsearch.org/guide/reference/index-modules/store/](http://www.elasticsearch.org/guide/reference/index-modules/store/), in case the I/O caused by merges hurts - increase index buffer size[http://www.elasticsearch.org/guide/reference/modules/indices/](http://www.elasticsearch.org/guide/reference/modules/indices/)- that should make it more gentle to I/O, in exchange for some memory Best regards, Radu On Wed, Jul 10, 2013 at 2:38 AM, MJR M [emjayaarr@gmail.com](mailto:emjayaarr@gmail.com) wrote: > Hi > > ``` > In our prod ES cluster, we have 5 nodes and I have to re-index all > > ``` > > the documents. I am doing bulk indexing through river, and while doing this > load on ES nodes increase to 10 - 15+, and obviously this slows down the > search. Can anyone suggest what should I do in order to bulk index through > river and at the same time keep the load on nodes under control. I have to > re-index 50 million documents. > > Regards > mjr > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). -- [http://sematext.com/](http://sematext.com/) -- Elasticsearch -- Solr -- Lucene -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). For more options, visit [https://groups.google.com/groups/opt\_out](https://groups.google.com/groups/opt_out). ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 2:27am UTC](https://discuss.elastic.co/t/how-to-control-load-on-es-nodes/12731/3 "2017-07-06T02:27:18Z")