# Connection performance Logstash =\> Logstash (Lumberjack protocol) - solution performance

**URL:** <https://discuss.elastic.co/t/connection-performance-logstash-logstash-lumberjack-protocol-solution-performance/220566>\
**Category:** Logstash\
**Created:** [February 23, 2020, 7:02pm UTC](https://discuss.elastic.co/t/connection-performance-logstash-logstash-lumberjack-protocol-solution-performance/220566 "2020-02-23T19:02:11Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Rysiu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rysiu/32/61919_2.png) [@Rysiu](https://discuss.elastic.co/u/Rysiu)\
**Post date:** [February 23, 2020, 7:02pm UTC](https://discuss.elastic.co/t/connection-performance-logstash-logstash-lumberjack-protocol-solution-performance/220566/1 "2020-02-23T19:02:11Z")

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Connection performance Logstash =\> Logstash (Lumberjack protocol) - solution performance

I have a question about Logstash =\> Logstash connection (data flow between two different Logstashes on different physical machines) using output/input lumberjack.

What are the performance capabilities of such a solution?  
Of course I understand - many variables.

I put together such a connection between two Logstash instances.

For a while everything is working around the other logstash adds some documents to Elasticsearch... After a short while, however, information about slowing down and turning off a given pipeline appears in the logs.

The system does not have a very large load (system load in Linux).  
On these systems there are only Logstash instances.  
These are not weak hardware solutions (dedicated 8-core Xeon and 32 GB RAM - 16 GB for Java).

The data stream is not very large.  
For example, can Lumbejack be a limitation for 25 Mbps?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 22, 2020, 7:02pm UTC](https://discuss.elastic.co/t/connection-performance-logstash-logstash-lumberjack-protocol-solution-performance/220566/2 "2020-03-22T19:02:13Z")

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