# ELK on Windows: Very Poor Performance **URL:** \ **Category:** Elasticsearch\ **Created:** [April 18, 2017, 8:05pm UTC](https://discuss.elastic.co/t/elk-on-windows-very-poor-performance/82769 "2017-04-18T20:05:49Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![gokhankocak](https://avatars.discourse-cdn.com/v4/letter/g/6de8d8/32.png) [@gokhankocak](https://discuss.elastic.co/u/gokhankocak)\ **Post date:** [April 18, 2017, 8:05pm UTC](https://discuss.elastic.co/t/elk-on-windows-very-poor-performance/82769/1 "2017-04-18T20:05:49Z")
We setup a cluster with 2 data nodes on Hyper-V VMs. Daily index size is around 200 GB. Performance is very poor, elasticsearch does not respond at all. 2 data nodes use 100% CPU and 32 GB of memory (each node). We use the latest version, 5.3.0 with the latest Java version. I also observed 400 Mbit/s network traffic between nodes. We need some guidance on sizing. Or should we setup Linux nodes instead of Windows? ---
**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:** [April 18, 2017, 11:07pm UTC](https://discuss.elastic.co/t/elk-on-windows-very-poor-performance/82769/2 "2017-04-18T23:07:01Z")
How many indices, how many shards? Do you have Monitoring enabled? ---
**Author:** ![gokhankocak](https://avatars.discourse-cdn.com/v4/letter/g/6de8d8/32.png) [@gokhankocak](https://discuss.elastic.co/u/gokhankocak)\ **Post date:** [April 19, 2017, 6:17am UTC](https://discuss.elastic.co/t/elk-on-windows-very-poor-performance/82769/3 "2017-04-19T06:17:36Z")
Hi Mark, Yes, we have monitoring enabled. There are 288 primary shards and 283 replica shards and 68 indices. Indices keep daily logs, so the latest one is most active. [cid:image003.jpg@01D2B8ED.C8064620] [cid:image004.jpg@01D2B8ED.C8064620] [cid:image005.jpg@01D2B8ED.C8064620] // Gökhan Koçak // Uygulama Yönetimi Mimari Danışmanı ![](https://us1.discourse-cdn.com/elastic/original/3X/9/6/9601dd3618f8f0fa6988c64fe64741a2eeb7dbc9.jpg) ![](https://us1.discourse-cdn.com/elastic/original/3X/f/b/fbc317137a3f9b7840c43fc5790c971061d04d74.jpg) ![](https://us1.discourse-cdn.com/elastic/original/3X/e/9/e937ac09025bc9e1dee6a00e63c7842d4d369420.jpg) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 17, 2017, 6:25am UTC](https://discuss.elastic.co/t/elk-on-windows-very-poor-performance/82769/4 "2017-05-17T06:25:58Z")
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