# Why is query duration is faster in the 2nd attempt than the initial attempt in Kibana dashboard?

**URL:** <https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963>\
**Category:** Kibana\
**Created:** [December 14, 2016, 4:13am UTC](https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963 "2016-12-14T04:13:05Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![YuWatanabe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yuwatanabe/32/13259_2.png) [@YuWatanabe](https://discuss.elastic.co/u/YuWatanabe)\
**Post date:** [December 14, 2016, 4:13am UTC](https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963/1 "2016-12-14T04:13:05Z")

</div>

Hi.

I recently realized that query performance is much better in the 2nd attempt than the initial attempt in Kibana dashboard .

**Initial attempt.**

```
Query Duration	5056ms
Request Duration	5257ms
Hits	1863206
Index	"openstack-*"

```

**2nd attempt.**

```
Query Duration	320ms
Request Duration	528ms
Hits	1863245
Index	"openstack-*"

```

Is there a cache in Query or Fetch phase that stays around for a while after the initial request?  
My Kibana and elasticsearch version are both 5.1.1.

---

<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [December 14, 2016, 4:19am UTC](https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963/2 "2016-12-14T04:19:43Z")

</div>

Because it caches it after the first time.

---

<div class="post-metadata">

**Author:** ![YuWatanabe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yuwatanabe/32/13259_2.png) [@YuWatanabe](https://discuss.elastic.co/u/YuWatanabe)\
**Post date:** [December 14, 2016, 4:22am UTC](https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963/3 "2016-12-14T04:22:54Z")

</div>

Is this cache the [priority queue](https://www.elastic.co/guide/en/elasticsearch/guide/2.x/_query_phase.html) or something else?

---

<div class="post-metadata">

**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [December 14, 2016, 4:24am UTC](https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963/4 "2016-12-14T04:24:45Z")

</div>

No, it's [https://www.elastic.co/guide/en/elasticsearch/reference/5.1/shard-request-cache.html#shard-request-cache](https://www.elastic.co/guide/en/elasticsearch/reference/5.1/shard-request-cache.html#shard-request-cache)

---

<div class="post-metadata">

**Author:** ![YuWatanabe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yuwatanabe/32/13259_2.png) [@YuWatanabe](https://discuss.elastic.co/u/YuWatanabe)\
**Post date:** [December 14, 2016, 4:32am UTC](https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963/5 "2016-12-14T04:32:08Z")

</div>

Totally understood . Thanks.

---

<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:** [January 11, 2017, 4:32am UTC](https://discuss.elastic.co/t/why-is-query-duration-is-faster-in-the-2nd-attempt-than-the-initial-attempt-in-kibana-dashboard/68963/6 "2017-01-11T04:32:08Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.