# Developer mode fail

**URL:** <https://discuss.elastic.co/t/developer-mode-fail/265482>\
**Category:** Kibana\
**Created:** [February 25, 2021, 2:12pm UTC](https://discuss.elastic.co/t/developer-mode-fail/265482 "2021-02-25T14:12:13Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Matias\_Gerstner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/matias_gerstner/32/71678_2.png) [@Matias\_Gerstner](https://discuss.elastic.co/u/Matias_Gerstner)\
**Post date:** [February 25, 2021, 2:12pm UTC](https://discuss.elastic.co/t/developer-mode-fail/265482/1 "2021-02-25T14:12:13Z")

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Hello good morning, I am having problems starting kibana in developer mode, it uses 100% of the cpu and gpu, my computer freezes, the idea is to make a plugin, but I cannot start the system, do you have any idea that it may be ?

I was doing it following this guide: [How To Create A Plugin For Kibana - Chunk Bytes](https://chunkbytes.com/how-to-create-a-plugin-for-kibana/)

Cpu: Amd ryzen 5 3400  
Ram: 32gb  
Gpu: integrated  
OS: W10 or Ubuntu 20.04 (same problem)

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**Author:** ![Mikhail\_Shustov](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mikhail_shustov/32/49186_2.png) [@Mikhail\_Shustov](https://discuss.elastic.co/u/Mikhail_Shustov)\
**Post date:** [February 25, 2021, 2:20pm UTC](https://discuss.elastic.co/t/developer-mode-fail/265482/2 "2021-02-25T14:20:02Z")

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> [@Matias\_Gerstner](#):
>
> I am having problems starting kibana in developer mode, it uses 100% of the cpu and gpu, my computer freezes

Kibana build system uses all available CPUs by default. You can configure the number of used CPUs if run the Kibana server with `KBN_OPTIMIZER_MAX_WORKERS` environment variable. For example `KBN_OPTIMIZER_MAX_WORKERS=4 yarn start`

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**Author:** ![Matias\_Gerstner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/matias_gerstner/32/71678_2.png) [@Matias\_Gerstner](https://discuss.elastic.co/u/Matias_Gerstner)\
**Post date:** [February 25, 2021, 2:27pm UTC](https://discuss.elastic.co/t/developer-mode-fail/265482/3 "2021-02-25T14:27:27Z")

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Great, did it work for me? Do you know where I can find a command for the maximum ram memory please? THANKS A LOT!

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**Author:** ![Mikhail\_Shustov](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mikhail_shustov/32/49186_2.png) [@Mikhail\_Shustov](https://discuss.elastic.co/u/Mikhail_Shustov)\
**Post date:** [February 25, 2021, 2:33pm UTC](https://discuss.elastic.co/t/developer-mode-fail/265482/4 "2021-02-25T14:33:39Z")

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> Great, did it work for me? Do you know where I can find a command for the maximum ram memory please? THANKS A LOT!

Do you want to change the heap memory size for the nodejs process? you can run Kibana with [--max-old-space-size](https://nodejs.org/api/cli.html#cli_max_old_space_size_size_in_megabytes) v8 flag. as `node --max-old-space-size=4000 scripts/kibana --dev`

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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:** [March 25, 2021, 2:34pm UTC](https://discuss.elastic.co/t/developer-mode-fail/265482/5 "2021-03-25T14:34:19Z")

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