Re: Why systemd-nspawn is slower than docker, podman and qemu?! how to Improve nspawn performance?

[Mantas Mikulėnas <grawity@xxxxxxxxx>]

On Mon, Jan 25, 2021, 12:56 Badr Elmers <badrelmers@xxxxxxxxx> wrote:

Hi,

Why nspawn is slow compared to docker podman and even qemu?! 

CPU tasks take twice of the time it takes in docker, podman or qemu 

here I filled a request to improve nspawn performance which contain the steps and the full test result: https://github.com/systemd/systemd/issues/18370

Do you know why systemd-nspawn is slower? how can I improve it?

thank you

Have you tried completely *disabling* the syscall filtering and all other seccomp-based features? Export SYSTEMD_SECCOMP=0 before running nspawn and check if it makes any difference...

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