# Elasticsearch gc overhead
**URL:** https://discuss.elastic.co/t/elasticsearch-gc-overhead/220620
**Category:** Elasticsearch
**Created:** [February 24, 2020, 10:07am UTC](https://discuss.elastic.co/t/elasticsearch-gc-overhead/220620 "2020-02-24T10:07:57Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Akaren](https://discuss.elastic.co/u/Akaren)
#### Post date: [February 24, 2020, 10:07am UTC](https://discuss.elastic.co/t/elasticsearch-gc-overhead/220620/1 "2020-02-24T10:07:57Z")
I am using ES 7.1.1. I have 4 big indices (around 20-40GB, 2 shards) and 6 small indices (500MB).
Disk memory is 32GB, heap size is set (min and max) to 13GB. And only one node.
Searching is so slow and I can see warnings:
```
[WARN][o.e.m.j.JvmGcMonitorService] [] [gc][494435] overhead, spent [13.7s] collecting in the
last [14.6s] [2020-02-22T12:08:58,291][WARN][o.e.m.j.JvmGcMonitorService] [] [gc][young]
[494438][79303] duration [5.3s], collections [1]/[6.1s], total [5.3s]/[1h], memory [8.2gb]->
[8.2gb]/[12.3gb], all_pools {[young] [90.7mb]->[16mb]/[865.3mb]}{[survivor] [84.6mb]->
[107.3mb]/[108.1mb]}{[old] [8gb]->[8.1gb]/[11.4gb]} [2020-02-22T12:08:58,292][WARN]
[o.e.m.j.JvmGcMonitorService] [] [gc][494438] overhead, spent [5.3s] collecting in the last [6.1s]
[2020-02-22T12:10:00,624][WARN][o.e.m.j.JvmGcMonitorService] [] [gc][young][494493][79304]
duration [7.3s], collections [1]/[8.3s], total [7.3s]/[1h], memory [9gb]->[8.4gb]/[12.3gb], all_pools
{[young] [858.2mb]->[10.3mb]/[865.3mb]}{[survivor] [107.3mb]->[108.1mb]/[108.1mb]}{[old]
[8.1gb]->[8.3gb]/[11.4gb]}
```
Any idea what to do?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 23, 2020, 10:08am UTC](https://discuss.elastic.co/t/elasticsearch-gc-overhead/220620/2 "2020-03-23T10:08:01Z")
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