# Thread\_pool \[management\]
**URL:** https://discuss.elastic.co/t/thread-pool-management/98628
**Category:** Elasticsearch
**Created:** [August 29, 2017, 5:33am UTC](https://discuss.elastic.co/t/thread-pool-management/98628 "2017-08-29T05:33:21Z")
**Posts on this page:** 8
**Page:** 1
### Author:  [@nestorbolivar](https://discuss.elastic.co/u/nestorbolivar)
#### Post date: [August 29, 2017, 5:33am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/1 "2017-08-29T05:33:21Z")
Could anyone explain what this thread does?! It seems that only this thread is consuming the most resources on my cluster yet I can't find how to tune it.
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [August 29, 2017, 8:00am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/2 "2017-08-29T08:00:43Z")
What version are you on?
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### Author:  [@nestorbolivar](https://discuss.elastic.co/u/nestorbolivar)
#### Post date: [August 29, 2017, 8:15am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/3 "2017-08-29T08:15:09Z")
Hi mate,
5.5 Docker image - saw somewhere there was a bug in a previous version related to this thread\_pool but i'm using the current stable.
Cheers
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [August 29, 2017, 8:19am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/4 "2017-08-29T08:19:01Z")
Can you show the output from `_cat/threadpool`?
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### Author:  [@nestorbolivar](https://discuss.elastic.co/u/nestorbolivar)
#### Post date: [August 29, 2017, 8:36am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/6 "2017-08-29T08:36:04Z")
Will do mate @warkolm . Not useful now as I'm recovering the cluster.
In general all the values are in 0 the only one that increases is management with a max value of 5. the search thread increases as well when searching something - part of the config file
```
thread_pool:
search:
size: 40
queue_size: 10000
bulk:
size: 2
queue_size: 300
index:
size: 2
queue_size: 200
warmer:
core: 1
max: 3
keep_alive: 5m
```
I'm disabling X-Pack module as the issue was introduced when upgrading from 2.4 to 5.5 (both on Docker and docker includes X-Pack)
```
xpack:
monitoring:
enabled: false
exporters:
my_local:
type: local
security:
enabled: false
ml:
enabled: false
graph:
enabled: false
watcher:
enabled: false
index:
rest:
direct_access: true
```
This is only a shot to see if it works... Takes a while to recover the cluster, I'll upload more info in a few hours.
Cheers
---
### Author:  [@nestorbolivar](https://discuss.elastic.co/u/nestorbolivar)
#### Post date: [August 29, 2017, 8:47am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/7 "2017-08-29T08:47:59Z")
At this stage my cluster my cluster is with routing allocation: none
`"cluster.routing.allocation.enable": "none"`
And I can see this output - the other values are on 0
```
[root@prd-log-dnode-1-6 ~]$ curl -sL -XGET 'localhost:9200/_cat/thread_pool?v'|egrep management|sort
es-prd-log-knode-1-7 management 1 0 0
es-prd-log-knode-2-7 management 2 0 0
es-prd-log-knode-3-7 management 1 0 0
prd-log-dnode-1-6 management 1 0 0
prd-log-dnode-2-6 management 1 0 0
prd-log-dnode-3-6 management 1 0 0
prd-log-node-1-5 management 1 0 0
prd-log-node-2-5 management 1 0 0
prd-log-node-3-5 management 2 0 0
```
Cheers
---
### Author:  [@nestorbolivar](https://discuss.elastic.co/u/nestorbolivar)
#### Post date: [September 5, 2017, 9:38am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/8 "2017-09-05T09:38:30Z")
Thread [management] was consuming high percentage of resources on data nodes. The issue seems to disappear when migrating data nodes file systems from LVM-xfs to plain file system (ext4).
```
Infrastructure: ES running on AWS.
Instance type: i3.2xlarge instances with NVME disks.
DB size: 2.4TB across 3 data nodes.
Docker version 17.05.0-ce, build 89658be
ES version: FROM docker.elastic.co/elasticsearch/elasticsearch:5.5.1
KV Store: Consul v0.8.5
OS: CentOS Linux release 7.3.1611
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 3, 2017, 9:38am UTC](https://discuss.elastic.co/t/thread-pool-management/98628/9 "2017-10-03T09:38:37Z")
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