Description:
Uploading a relatively small video file, around 50 MB, caused the Rocket.Chat server to reach extreme resource usage. During/after the upload, disk I/O, disk throughput, CPU and memory usage went to the limit according to server monitoring.
The file was a normal video uploaded through the chat UI. I would not expect a 50 MB upload to put the whole server under this level of load.
Steps to reproduce:
- Open a room/channel in Rocket.Chat.
- Upload a video file of about 50 MB.
- Send the message with the video attachment.
- Watch server resource usage during and shortly after the upload.
Expected behavior:
Rocket.Chat should handle this upload without exhausting server resources. CPU, memory and disk usage may increase temporarily, but should remain within a reasonable range and return to normal after the upload/processing is finished.
Actual behavior:
After uploading the video, the server reached extreme values for disk, memory and CPU usage.
From monitoring:
- Disk I/O and disk throughput spiked heavily.
- CPU reached near 100%.
- Memory also reached the limit.
- The server stayed under heavy load after the upload.
I will attach screenshots from monitoring that show the disk I/O, disk throughput, CPU and memory behavior.
Server Setup Information:
- Version of Rocket.Chat Server: 8.4.1
- License Type: Starter
- Number of Users: 20
- Operating System: Docker
- Deployment Method: Docker
- Number of Running Instances: 1?
- DB Replicaset Oplog: unknown
- NodeJS Version: v22.22.2
- MongoDB Version: 8.2.7 / wiredTiger
- File upload storage type: unknown
- Reverse proxy: other
Client Setup Information
- Desktop App or Browser Version: Android
- Operating System: 16
Additional context
The video was about 50 MB. It was a normal user upload, not an import or automated upload.
This looks like the server may be doing very expensive processing or repeated disk reads/writes for video attachments. I do not know yet if this is related to file storage, preview/thumbnail generation, transcoding, antivirus scanning, or another upload-processing step.
Relevant logs:
I do not have relevant Rocket.Chat logs yet. I can provide logs around the upload timestamp if needed.
Description:
Uploading a relatively small video file, around 50 MB, caused the Rocket.Chat server to reach extreme resource usage. During/after the upload, disk I/O, disk throughput, CPU and memory usage went to the limit according to server monitoring.
The file was a normal video uploaded through the chat UI. I would not expect a 50 MB upload to put the whole server under this level of load.
Steps to reproduce:
Expected behavior:
Rocket.Chat should handle this upload without exhausting server resources. CPU, memory and disk usage may increase temporarily, but should remain within a reasonable range and return to normal after the upload/processing is finished.
Actual behavior:
After uploading the video, the server reached extreme values for disk, memory and CPU usage.
From monitoring:
I will attach screenshots from monitoring that show the disk I/O, disk throughput, CPU and memory behavior.
Server Setup Information:
Client Setup Information
Additional context
The video was about 50 MB. It was a normal user upload, not an import or automated upload.
This looks like the server may be doing very expensive processing or repeated disk reads/writes for video attachments. I do not know yet if this is related to file storage, preview/thumbnail generation, transcoding, antivirus scanning, or another upload-processing step.
Relevant logs:
I do not have relevant Rocket.Chat logs yet. I can provide logs around the upload timestamp if needed.