# Slow performance when switching from elasticsearch c 1.4 -\> 2.0
**URL:** https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930
**Category:** Elasticsearch
**Created:** [November 30, 2015, 5:08pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930 "2015-11-30T17:08:46Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@denisE](https://discuss.elastic.co/u/denisE)
#### Post date: [November 30, 2015, 5:08pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930/1 "2015-11-30T17:08:46Z")
Hello.
I have a cluster of three machines, until yesterday worked on ES 1.4 and the last upgrade to 2.0 and now in shock ...
I do not know what to do.
What was once performed for 5 minutes now occupies 30-40 minutes ...
Where "dig"?
The last execution:
69,33s user c7,00s system 2% cpu 46: 44,24 total
That maxim that yesterday performed for 5 minutes.
Query will not change.
The sample is simple and update fields.
Thank you.
P.S.
Sorry for my English.
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### Author:  [@jpountz](https://discuss.elastic.co/u/jpountz)
#### Post date: [November 30, 2015, 5:32pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930/2 "2015-11-30T17:32:06Z")
Can you provide us with some simple queries that now perform worse than in 1.4?
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### Author:  [@denisE](https://discuss.elastic.co/u/denisE)
#### Post date: [November 30, 2015, 6:02pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930/3 "2015-11-30T18:02:58Z")
This is a normal update by \_id .
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### Author:  [@jpountz](https://discuss.elastic.co/u/jpountz)
#### Post date: [November 30, 2015, 6:14pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930/4 "2015-11-30T18:14:22Z")
Oh, I thought this was a search workload, but this is actually about updating. Can you capture hot threads while your test is running? [https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-nodes-hot-threads.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-nodes-hot-threads.html)
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### Author:  [@mikemccand](https://discuss.elastic.co/u/mikemccand)
#### Post date: [November 30, 2015, 6:24pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930/5 "2015-11-30T18:24:18Z")
Are you using the bulk indexing API? How many documents in each bulk request?
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### Author:  [@denisE](https://discuss.elastic.co/u/denisE)
#### Post date: [November 30, 2015, 6:57pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930/6 "2015-11-30T18:57:45Z")
wow! )
Thank you, bulk-API "returned the speed!"
2 min!!!
Thank you so much!
Prosperity to you.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 5, 2017, 11:34pm UTC](https://discuss.elastic.co/t/slow-performance-when-switching-from-elasticsearch-c-1-4-2-0/35930/7 "2017-07-05T23:34:45Z")