# Whether the heap size of http node can be promoted to more than 32 GB? **URL:** \ **Category:** Elasticsearch\ **Created:** [January 8, 2015, 9:43am UTC](https://discuss.elastic.co/t/whether-the-heap-size-of-http-node-can-be-promoted-to-more-than-32-gb/21534 "2015-01-08T09:43:52Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![yang\_ming](https://avatars.discourse-cdn.com/v4/letter/y/ecb155/32.png) [@yang\_ming](https://discuss.elastic.co/u/yang_ming)\ **Post date:** [January 8, 2015, 9:43am UTC](https://discuss.elastic.co/t/whether-the-heap-size-of-http-node-can-be-promoted-to-more-than-32-gb/21534/1 "2015-01-08T09:43:52Z")
Hi All, ``` The http node is independent, and without any data. As the guide said, ``` 50% of RAM should be assigned to Lucene. ``` Http node does not hold any data file, Does it mean that we can give ``` more heap size than 32 GB, if the node have 128 GB RAM. ``` The reason to do this is that there will be a bottleneck in http node ``` when doing big data aggregation, terms aggregation e.g. ``` So, we want to increase the heap size on http node. Is it feasible? ``` Thanks -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/eda49d8d-d929-4030-8a4a-a2effc47df5e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/eda49d8d-d929-4030-8a4a-a2effc47df5e%40googlegroups.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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:** [January 8, 2015, 10:09am UTC](https://discuss.elastic.co/t/whether-the-heap-size-of-http-node-can-be-promoted-to-more-than-32-gb/21534/2 "2015-01-08T10:09:39Z")
Yes, but once you get to 32GB and more the java pointers are no longer compressed and you lose some efficiencies. You might be able to cope with this if you have a lot of CPU power. Also look into the G1GC, it's not currently recommended, but for larger heap sizes it's probably worth trialing. On 8 January 2015 at 20:43, yang ming [ymbloy@gmail.com](mailto:ymbloy@gmail.com) wrote: > Hi All, > > ``` > The http node is independent, and without any data. As the guide said, > > ``` > > 50% of RAM should be assigned to Lucene. > > ``` > Http node does not hold any data file, Does it mean that we can give > > ``` > > more heap size than 32 GB, if the node have 128 GB RAM. > > ``` > The reason to do this is that there will be a bottleneck in http node > > ``` > > when doing big data aggregation, terms aggregation e.g. > > ``` > So, we want to increase the heap size on http node. Is it feasible? > > ``` > > Thanks > > -- > You received this message because you are subscribed to the Google Groups > "elasticsearch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). > To view this discussion on the web visit > [https://groups.google.com/d/msgid/elasticsearch/eda49d8d-d929-4030-8a4a-a2effc47df5e%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/eda49d8d-d929-4030-8a4a-a2effc47df5e%40googlegroups.com) > [https://groups.google.com/d/msgid/elasticsearch/eda49d8d-d929-4030-8a4a-a2effc47df5e%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/eda49d8d-d929-4030-8a4a-a2effc47df5e%40googlegroups.com?utm_medium=email&utm_source=footer) > . > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). -- You received this message because you are subscribed to the Google Groups "elasticsearch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [elasticsearch+unsubscribe@googlegroups.com](mailto:elasticsearch+unsubscribe@googlegroups.com). To view this discussion on the web visit [https://groups.google.com/d/msgid/elasticsearch/CAEYi1X9BKgyzfc-%2BAgB0jFyBeYrmJsXBUY8i9EPppJX3ENcrbA%40mail.gmail.com](https://groups.google.com/d/msgid/elasticsearch/CAEYi1X9BKgyzfc-%2BAgB0jFyBeYrmJsXBUY8i9EPppJX3ENcrbA%40mail.gmail.com). For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout). ---
**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, 12:40am UTC](https://discuss.elastic.co/t/whether-the-heap-size-of-http-node-can-be-promoted-to-more-than-32-gb/21534/3 "2017-07-06T00:40:07Z")
Closed on July 6, 2017, 12:40am UTC