# ElasticSearch Old-Gen Heap filling up quickly
**URL:** https://discuss.elastic.co/t/elasticsearch-old-gen-heap-filling-up-quickly/215944
**Category:** Elasticsearch
**Created:** [January 21, 2020, 7:55pm UTC](https://discuss.elastic.co/t/elasticsearch-old-gen-heap-filling-up-quickly/215944 "2020-01-21T19:55:58Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@musfiqur](https://discuss.elastic.co/u/musfiqur)
#### Post date: [January 21, 2020, 7:55pm UTC](https://discuss.elastic.co/t/elasticsearch-old-gen-heap-filling-up-quickly/215944/1 "2020-01-21T19:55:58Z")
Hi,
From our grafana logs, we see that our old-gen heap is filling up quickly (in 10 minutes).
We are using ES 6.7 with with 11 nodes and 28 shards. We have seen multiple outages when the old-gen heap is filling quickly. What does it mean? Is our heap too big/ number of shards too low/number of nodes too low/load too high? What does it indicate?
-Musfiqur
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 18, 2020, 7:56pm UTC](https://discuss.elastic.co/t/elasticsearch-old-gen-heap-filling-up-quickly/215944/2 "2020-02-18T19:56:22Z")
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