# High response time with 45 concurrent users
**URL:** https://discuss.elastic.co/t/high-response-time-with-45-concurrent-users/22318
**Category:** Elasticsearch
**Created:** [February 22, 2015, 8:38pm UTC](https://discuss.elastic.co/t/high-response-time-with-45-concurrent-users/22318 "2015-02-22T20:38:08Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@John\_D\_Ament](https://discuss.elastic.co/u/John_D_Ament)
#### Post date: [February 22, 2015, 8:38pm UTC](https://discuss.elastic.co/t/high-response-time-with-45-concurrent-users/22318/1 "2015-02-22T20:38:08Z")
Hi,
I have a system with about 50k documents indexed. It's a single data
master node (4gb heap I believe) w/ 2 client nodes connected. Aside from
redundancy issues, we noticed that when there were 45 concurrent users,
response times on our queries were taking upwards of 6s. With user load at
25 concurrent users, we're seeing better response times, under a second.
Now, I know we have some optimization to do on our part, but is there
anything I can do to look to see why queries may be taking so long in
elasticsearch? There's a slow query log IIRC, can we look at that to
determine these things?
Thanks!
John
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### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [February 22, 2015, 8:53pm UTC](https://discuss.elastic.co/t/high-response-time-with-45-concurrent-users/22318/2 "2015-02-22T20:53:40Z")
You should check out monitoring tools like Marvel, kopf or elastichq and
the things it reports.
On 23 February 2015 at 07:38, John D. Ament [john.d.ament@gmail.com](mailto:john.d.ament@gmail.com) wrote:
> Hi,
>
> I have a system with about 50k documents indexed. It's a single data
> master node (4gb heap I believe) w/ 2 client nodes connected. Aside from
> redundancy issues, we noticed that when there were 45 concurrent users,
> response times on our queries were taking upwards of 6s. With user load at
> 25 concurrent users, we're seeing better response times, under a second.
>
> Now, I know we have some optimization to do on our part, but is there
> anything I can do to look to see why queries may be taking so long in
> elasticsearch? There's a slow query log IIRC, can we look at that to
> determine these things?
>
> Thanks!
>
> John
>
> --
> You received this message because you are subscribed to the Google Groups
> "elasticsearch" group.
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> To view this discussion on the web visit
> [https://groups.google.com/d/msgid/elasticsearch/75334473-2a9c-4604-b9c5-19b473bd8447%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/75334473-2a9c-4604-b9c5-19b473bd8447%40googlegroups.com)
> [https://groups.google.com/d/msgid/elasticsearch/75334473-2a9c-4604-b9c5-19b473bd8447%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/75334473-2a9c-4604-b9c5-19b473bd8447%40googlegroups.com?utm_medium=email&utm_source=footer)
> .
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 6, 2017, 12:30am UTC](https://discuss.elastic.co/t/high-response-time-with-45-concurrent-users/22318/3 "2017-07-06T00:30:56Z")