The Mac Mini 6,1 (2012) base model ships with 4GB of Memory in a 2x2GB 1600Mhz 204 pin SODIMM configuration. 4GB as it turns out, is a little inadequate for running Ubuntu, FreeBSD, CentOS and XP simultaneously. The Linux VMs seem to need more than 512MB to compile kernels and XP is super sluggish with anything less than 1GB.
I thought it might be a good idea to turn on “safe sleep” (or Suspend To Disk) instead of the default “Suspend To RAM”; the motive was to save some batterry power whicle I move the laptop. Turns out that this was extremely painful when your system has 4G of memory.
It takes almost 20s to resume from disk. Might aswell just shutdown and restart instead. No more deep sleep for me.