# Which epoll mode using in es? level triggered or edge triggered

**URL:** <https://discuss.elastic.co/t/which-epoll-mode-using-in-es-level-triggered-or-edge-triggered/110913>\
**Category:** Elasticsearch\
**Created:** [December 9, 2017, 3:13am UTC](https://discuss.elastic.co/t/which-epoll-mode-using-in-es-level-triggered-or-edge-triggered/110913 "2017-12-09T03:13:00Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![onefooler](https://avatars.discourse-cdn.com/v4/letter/o/ad7895/32.png) [@onefooler](https://discuss.elastic.co/u/onefooler)\
**Post date:** [December 9, 2017, 3:13am UTC](https://discuss.elastic.co/t/which-epoll-mode-using-in-es-level-triggered-or-edge-triggered/110913/1 "2017-12-09T03:13:01Z")

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netty provides epoll based transport that uses level-triggered mode and edge-triggered mode,I wonder which epoll mode using in elasticsearch?  
thanks~

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**Author:** ![s1monw](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/s1monw/32/3637_2.png) [@s1monw](https://discuss.elastic.co/u/s1monw)\
**Post date:** [December 15, 2017, 10:46am UTC](https://discuss.elastic.co/t/which-epoll-mode-using-in-es-level-triggered-or-edge-triggered/110913/2 "2017-12-15T10:46:45Z")

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We don't use anything non-default along those lines. We also don't use the native epoll option that netty has.

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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:** [January 12, 2018, 10:47am UTC](https://discuss.elastic.co/t/which-epoll-mode-using-in-es-level-triggered-or-edge-triggered/110913/3 "2018-01-12T10:47:04Z")

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Closed on January 12, 2018, 10:47am UTC

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