``Performance degradation and ADB timeouts when running multiple instances on single host``

[Sikoso774]

Hi,

I am using redroid/redroid:11.0.0-latest and 13.0.0-latest for automation. I manage containers programmatically using python docker-py.

Scenario:

1. Start Container A (Redroid 11). Works fine, ADB stable.

2. Start Container B (Redroid 11) while A is running.

Problem: As soon as the second container starts booting, the ADB connection to the second device becomes extremely unstable or unresponsive, leading to timeouts in my automation tools (Appium).

Configuration: I am launching containers with these flags (reconstructed from my python script):

• --privileged

• --shm-size=2g

• androidboot.redroid_gpu_mode=guest (Software rendering)

• androidboot.redroid_width=720 / height=1600 (Eco mode)

Host Specs:

• OS : Ubuntu 24.04.3 LTS x86_64
• CPU: Intel Xeon E5-2620 v4 (32) @ 2.100GHz
• RAM : 251GB
• Docker version : 28.2.2

Question: Is there a specific kernel module or host configuration required to run multiple instances smoothly? It feels like the I/O or CPU is choking when the second instance boots.

Thank you!