# How many nodes in es cluster and how much jvm memory of each nodes in esrally benchmark

**URL:** <https://discuss.elastic.co/t/how-many-nodes-in-es-cluster-and-how-much-jvm-memory-of-each-nodes-in-esrally-benchmark/212921>\
**Category:** Elasticsearch\
**Tags:** rally\
**Created:** [December 24, 2019, 6:42am UTC](https://discuss.elastic.co/t/how-many-nodes-in-es-cluster-and-how-much-jvm-memory-of-each-nodes-in-esrally-benchmark/212921 "2019-12-24T06:42:16Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![hyf\_bd](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hyf_bd/32/59911_2.png) [@hyf\_bd](https://discuss.elastic.co/u/hyf_bd)\
**Post date:** [December 24, 2019, 6:42am UTC](https://discuss.elastic.co/t/how-many-nodes-in-es-cluster-and-how-much-jvm-memory-of-each-nodes-in-esrally-benchmark/212921/1 "2019-12-24T06:42:17Z")

</div>

in this web : [https://elasticsearch-benchmarks.elastic.co/#tracks/pmc/nightly/default/30d](https://elasticsearch-benchmarks.elastic.co/#tracks/pmc/nightly/default/30d)

there have add-4g-3nodes, add-4g and some other metric name.  
my question is:

1. add-4g-3nodes: Is the cluster have three nodes, and each node have 4g memory of jvm, and master and data role is in the same node ?
2. add-4g: Is the cluster only have one node? and just 4g memory ??

---

<div class="post-metadata">

**Author:** ![dliappis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dliappis/32/56174_2.png) [@dliappis](https://discuss.elastic.co/u/dliappis)\
**Post date:** [December 30, 2019, 9:58am UTC](https://discuss.elastic.co/t/how-many-nodes-in-es-cluster-and-how-much-jvm-memory-of-each-nodes-in-esrally-benchmark/212921/2 "2019-12-30T09:58:40Z")

</div>

Hello,

The answer to both your questions is yes.  
`add-4g-3nodes` refers to a 3 node Elasticsearch cluster using 4G heap; there are no dedicated master nodes.  
`add-4g` indeed is the same as `add-4g-3nodes` but with just 1 node.

Dimitris

---

<div class="post-metadata">

**Author:** ![hyf\_bd](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hyf_bd/32/59911_2.png) [@hyf\_bd](https://discuss.elastic.co/u/hyf_bd)\
**Post date:** [January 5, 2020, 4:03am UTC](https://discuss.elastic.co/t/how-many-nodes-in-es-cluster-and-how-much-jvm-memory-of-each-nodes-in-esrally-benchmark/212921/4 "2020-01-05T04:03:40Z")

</div>

how many cpu core of each node?

and if disable transparent\_hugepage, what about indexing performance?  
we only have 50,000 of nyc\_taxis-indexing-throughput.

---

<div class="post-metadata">

**Author:** ![dliappis](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dliappis/32/56174_2.png) [@dliappis](https://discuss.elastic.co/u/dliappis)\
**Post date:** [January 7, 2020, 3:03pm UTC](https://discuss.elastic.co/t/how-many-nodes-in-es-cluster-and-how-much-jvm-memory-of-each-nodes-in-esrally-benchmark/212921/5 "2020-01-07T15:03:26Z")

</div>

> [@hyf\_bd](#):
>
> how many cpu core of each node?

You can find the CPU model for the ES nodes in [https://elasticsearch-benchmarks.elastic.co/](https://elasticsearch-benchmarks.elastic.co/) i.e.

```auto
$ lscpu
Architecture: x86_64
CPU op-mode(s): 32-bit, 64-bit
Byte Order: Little Endian
CPU(s): 8
On-line CPU(s) list: 0-7
Thread(s) per core: 2
Core(s) per socket: 4
Socket(s): 1
NUMA node(s): 1
Vendor ID: GenuineIntel
CPU family: 6
Model: 158
Model name: Intel(R) Core(TM) i7-7700 CPU @ 3.60GHz

```

> [@hyf\_bd](#):
>
> and if disable transparent\_hugepage, what about indexing performance?

Our results (way back in 2018) showed a drop no more than 8% in specific tracks like `geonames`.

For a methodological approach to troubleshooting performance issues, I suggest watching @danielmitterdorfer 's talk about [The Seven Deadly Sins of Elasticsearch Benchmarking](https://www.elastic.co/elasticon/conf/2018/sf/the-seven-deadly-sins-of-elasticsearch-benchmarking).

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 4, 2020, 3:03pm UTC](https://discuss.elastic.co/t/how-many-nodes-in-es-cluster-and-how-much-jvm-memory-of-each-nodes-in-esrally-benchmark/212921/6 "2020-02-04T15:03:32Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.