# Increase pipeline.batch.size **URL:** \ **Category:** Logstash\ **Created:** [July 27, 2017, 8:46am UTC](https://discuss.elastic.co/t/increase-pipeline-batch-size/94756 "2017-07-27T08:46:45Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![mitabrev](https://avatars.discourse-cdn.com/v4/letter/m/a88e57/32.png) [@mitabrev](https://discuss.elastic.co/u/mitabrev)\ **Post date:** [July 27, 2017, 8:46am UTC](https://discuss.elastic.co/t/increase-pipeline-batch-size/94756/1 "2017-07-27T08:46:45Z")
Hi all, Currently I have default settings in logstash.yml: pipeline.workers: 4 pipeline.batch.size: 125 I tried to increase the batch size to 200 and 500, but the logstash service wouldn't start. Even when I decreased the setting to 100 it didn't start. I think I could optimize performance with increased batch size (am I right?). 4 core, 16 GB RAM, centos Why can't I increase the batch size? Thanks! ---
**Author:** ![mitabrev](https://avatars.discourse-cdn.com/v4/letter/m/a88e57/32.png) [@mitabrev](https://discuss.elastic.co/u/mitabrev)\ **Post date:** [July 28, 2017, 11:21am UTC](https://discuss.elastic.co/t/increase-pipeline-batch-size/94756/2 "2017-07-28T11:21:46Z")
Didn't work with 100, didn't work with 250, didn't work with 500 It works with 1000 ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 25, 2017, 11:22am UTC](https://discuss.elastic.co/t/increase-pipeline-batch-size/94756/3 "2017-08-25T11:22:17Z")
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