# Beats input: The circuit breaker has detected a slowdown or stall in the pipeline **URL:** \ **Category:** Logstash\ **Created:** [June 7, 2016, 11:49am UTC](https://discuss.elastic.co/t/beats-input-the-circuit-breaker-has-detected-a-slowdown-or-stall-in-the-pipeline/52062 "2016-06-07T11:49:08Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Sumantha\_Kannantha](https://avatars.discourse-cdn.com/v4/letter/s/df788c/32.png) [@Sumantha\_Kannantha](https://discuss.elastic.co/u/Sumantha_Kannantha)\ **Post date:** [June 7, 2016, 11:49am UTC](https://discuss.elastic.co/t/beats-input-the-circuit-breaker-has-detected-a-slowdown-or-stall-in-the-pipeline/52062/1 "2016-06-07T11:49:08Z")
we are getting below error in logstash log log: **Beats input: The circuit breaker has detected a slowdown or stall in the pipeline, the input is closing the current connection and rejecting new connection until the pipeline recover** **Beats input: the pipeline is blocked, temporary refusing new connection.", :reconnect\_backoff\_sleep=\>0.5, :level=\>:warn** Note : Logstash instance was working fine for moderate load but when load increased drastically we are facing this issue and logstash is unable to come out of it. To avoid this we have increased logstash congestion\_threshold to 25 also increased -w to 10 for 4 core machine for logstash service still it is in same state. ---
**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:** [June 8, 2016, 1:54am UTC](https://discuss.elastic.co/t/beats-input-the-circuit-breaker-has-detected-a-slowdown-or-stall-in-the-pipeline/52062/2 "2016-06-08T01:54:50Z")
You probably need to scale LS to cope with this dramatic load increase. But we kinda need more info on what load it is, what version you are on, what your config looks like etc. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 4:54am UTC](https://discuss.elastic.co/t/beats-input-the-circuit-breaker-has-detected-a-slowdown-or-stall-in-the-pipeline/52062/3 "2017-07-06T04:54:16Z")