# Logstash performance with stdout

**URL:** https://discuss.elastic.co/t/logstash-performance-with-stdout/177724
**Category:** Logstash
**Created:** [April 20, 2019, 6:13pm UTC](https://discuss.elastic.co/t/logstash-performance-with-stdout/177724 "2019-04-20T18:13:57Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![flavienbwk](https://avatars.discourse-cdn.com/v4/letter/f/5f9b8f/32.png) [@flavienbwk](https://discuss.elastic.co/u/flavienbwk)
#### Post date: [April 20, 2019, 6:13pm UTC](https://discuss.elastic.co/t/logstash-performance-with-stdout/177724/1 "2019-04-20T18:13:57Z")

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Hello,

I am importing a large set of data through multiple files with logstash, and I've parametrized the logstash configuration so all the data imported are redirected to `stdout`.

But I've seen in previous development works (other than ELK) that displaying the output (to stdout) really slows the process of inserting the data.

Does stdout affects the inserting time with Logstash and what is the common way to import data the fastest way ?

Thanks.

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 18, 2019, 6:14pm UTC](https://discuss.elastic.co/t/logstash-performance-with-stdout/177724/2 "2019-05-18T18:14:06Z")

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