Midnight Commander show disk usage

I am trying to use midnight commander (mc) to show disk usage of particular directories. I'm aware that I can use the command menu, but I need see individual directory sizes on the fly. I am using ctl + space, but it very quickly lists all the subdirectories/files in a popup which vanishes. As this popup with the disk usage vanishes it is not possible to see it. I am trying to use mc to find disk usage.