# CPU usage at 100%

**URL:** <https://forums.rocket.chat/t/cpu-usage-at-100/13680>\
**Category:** Community Support\
**Tags:** rocketchat-apps\
**Created:** [March 26, 2022, 9:56pm UTC](https://forums.rocket.chat/t/cpu-usage-at-100/13680 "2022-03-26T21:56:28Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![archie](https://avatars.discourse-cdn.com/v4/letter/a/ba9def/32.png) [@archie](https://forums.rocket.chat/u/archie)\
**Post date:** [March 26, 2022, 9:56pm UTC](https://forums.rocket.chat/t/cpu-usage-at-100/13680/1 "2022-03-26T21:56:28Z")

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### Description

Hello everyone! Sometimes mongodb loads the CPU at 100%. Moreover, I do not load the chat at all at this moment. That is, it happens even in idle mode.  
Note: I use chat via https, I use a paid certificate from GlobalSign: [Digital Certificates - PKI - SSL/TLS 🌎 GlobalSign GMO](https://www.globalsign.com/en)

My Ubuntu-Server configurations:  
Ubuntu 20.04 X64  
1 GB RAM / 1 CPU / 25 GB SSD / 50 Mbit/s

 ![CPU_100_RocketChat](https://us1.discourse-cdn.com/flex021/uploads/rocketchat/original/2X/c/c569d1d6f33a7aa8a80558a756292a7b2e3d5bbd.png)

### Server Setup Information

- Version of Rocket.Chat Server: 4.5.1
- Operating System: Ubuntu 20.04 X64
- Deployment Method: snap
- Number of Running Instances:
- DB Replicaset Oplog:
- NodeJS Version: 14.18.3 - x64
- MongoDB Version: 4.2.17
- Proxy: nginx
- Firewalls involved:

### Any additional Information

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**Author:** ![dudanogueira](https://sea1.discourse-cdn.com/flex021/user_avatar/forums.rocket.chat/dudanogueira/32/2529_2.png) [@dudanogueira](https://forums.rocket.chat/u/dudanogueira)\
**Post date:** [March 28, 2022, 5:04pm UTC](https://forums.rocket.chat/t/cpu-usage-at-100/13680/2 "2022-03-28T17:04:45Z")

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Hi!

You have 0 of swap?

How many active users? Maybe you are running out mem/cpu there.

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**Author:** ![archie](https://avatars.discourse-cdn.com/v4/letter/a/ba9def/32.png) [@archie](https://forums.rocket.chat/u/archie)\
**Post date:** [March 28, 2022, 7:26pm UTC](https://forums.rocket.chat/t/cpu-usage-at-100/13680/3 "2022-03-28T19:26:18Z")

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Hi,  
Yes, for some reason I have 0 swap. I don’t know why  
Active users 1-2. At this moment, the chat is not loaded at all!  
Can you tell me: what does the mongodb --config=/var/snow/rocketchat-server/1513/mongod command actually do?

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**Author:** ![wispaws](https://avatars.discourse-cdn.com/v4/letter/w/f19dbf/32.png) [@wispaws](https://forums.rocket.chat/u/wispaws)\
**Post date:** [March 29, 2022, 8:19am UTC](https://forums.rocket.chat/t/cpu-usage-at-100/13680/4 "2022-03-29T08:19:42Z")

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I used to experience this with some frequency. I increased my initial memory from 1Gb to 2Gb and problem has completely disappeared. I believe 1Gb memory, even for very low user numbers ( we use system for iOS/macOS app development ), seems to be the issue.

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**Author:** ![archie](https://avatars.discourse-cdn.com/v4/letter/a/ba9def/32.png) [@archie](https://forums.rocket.chat/u/archie)\
**Post date:** [March 30, 2022, 10:22am UTC](https://forums.rocket.chat/t/cpu-usage-at-100/13680/5 "2022-03-30T10:22:01Z")

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Thanks, I’ll try to use 2GB of RAM

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**Author:** ![wispaws](https://avatars.discourse-cdn.com/v4/letter/w/f19dbf/32.png) [@wispaws](https://forums.rocket.chat/u/wispaws)\
**Post date:** [April 6, 2022, 10:46am UTC](https://forums.rocket.chat/t/cpu-usage-at-100/13680/6 "2022-04-06T10:46:28Z")

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Did it fix your issue?

Graeme