Max number of cores per chromosome file on the docker version

[yaacoo]

I am running the docker version (1.16) on a machine with 26 cores, and set the number of cores to 24 when I first ran the container.

On a test run, I have one chromosome (22) and 7600 samples, but only up to 3 CPU cores are being utilized at any given moment.

Is there a limit per job/file? should I split my chromosomes to smaller files? Will it behave differently when pushed to a Hadoop cluster?

Thank you!