Performance is expected to be between 3x-10x slowdown depending on the workload, which for this class of systems is quite good. The gap, especially on the high end, will further shrink as the virtualization engine improves.

Not all parts of the ISA are as well optimized currently. The codegen for integer operations (the most common by far) is very sophisticated. Floating point and vector operations still have a pretty basic implementation.

WebVM can run any distro, barring bugs in our syscall layer of course :-)

You can add your own Dockerfile and deploy a custom version on GitHub: https://github.com/leaningtech/webvm/?tab=readme-ov-file#for...