Hi everyone,

I am using unRAID 7.x and have some issues running CPU and I/O heavy Docker containers like Plex, HandBrake, and Nextcloud. Even though the CPU and RAM are still free, the container still lags, restarts randomly, or has slow I/O when reading and writing large data.

I want to ask the community:

What is the most effective way for people to use a CPU for containers on unRAID?

Are there any tips to optimize I/O speed (NVMe cache, mover schedule, etc.)?

Should I edit cgroup or daemon.json in Docker to improve performance?

Is there anyone who is running a similar configuration but smoother? Please share.

My configuration:

unRAID 7.8.2

CPU: Intel i9-10900K (10 cores)

RAM: 64GB

Cache: NVMe Samsung 970 EVO 1TB

Array: 4 x WD Red Pro 10TB

Containers: Plex, HandBrake, MariaDB, Nextcloud

Thanks everyone in advance! I will try the suggestions and update the results for everyone to refer to.

among us online

Edited October 20, 2025Oct 20 by laurawoods

Hi,

Be sure that your docker.img file is on your cache disk and not on your array.