free -m does not seems to include memory used by RAM disks (tmpfs filesystems). Maybe because it's something in the kernel space?
How do I get the real memory usage (or it's opposite, free memory) including the allocated space of filesystems that reside in RAM like
I currently check for the memory usage by running
df -h and adding the "In use" numbers to the
-/+ buffers/cache number. Is there a command available that gives me the real memory usage?