# Where is the bottleneck of KNN retrieval speed? How to analyze?

**URL:** https://discuss.elastic.co/t/where-is-the-bottleneck-of-knn-retrieval-speed-how-to-analyze/347269
**Category:** Elasticsearch
**Tags:** vector-search
**Created:** [November 16, 2023, 4:05am UTC](https://discuss.elastic.co/t/where-is-the-bottleneck-of-knn-retrieval-speed-how-to-analyze/347269 "2023-11-16T04:05:01Z")
**Posts on this page:** 1
**Showing post:** 3

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### Author: ![Thijsvdp](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/thijsvdp/32/146696_2.png) [@Thijsvdp](https://discuss.elastic.co/u/Thijsvdp)
#### Post date: [November 16, 2023, 11:44pm UTC](https://discuss.elastic.co/t/where-is-the-bottleneck-of-knn-retrieval-speed-how-to-analyze/347269/3 "2023-11-16T23:44:41Z")

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I have recently answered a question, which is similar to your problem. Please check this: [link](https://discuss.elastic.co/t/ann-search-is-super-slow/344863/5).

Hope it helps!

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