At 10:14 -0800 11/2/10, Zane H. Healy wrote: >On Thu, 11 Feb 2010, Chris Jones wrote: > >>> Do either of those solutions allow you to throttle the virtual machines >>> running under them? If so I can setup a Linux instance specifically to run >>> a VAX emulator, and retire yet another system. >> >> Depends what you mean by throttle. I use VMware Fusion and with >>that you can certainly limit the amount of RAM, or number of CPU >>cores each VM gets to see. You can't (AFAIK) throttle them to only >>get x% of the available CPU power for a given core (so for instance >>give one VM 1GHz worth of a 2.5GHz core...). > >That was my fear. I'd like to be able to say that the instance gets 50% of >one core. Though if I can at least limit it to running on a single core, >that would help some. You can limit a VMware Fusion VM to a single CPU's worth of CPU, but it's still spread across all CPUs. So 1 CPU means 1/4 of the total on a 4 core iMac. Makes me wonder why they limited it to 1, 2 or 4 on a 4 core machine. I understood that Apple specifically don't license OSX on any virtual machine, even if that VM is running on Apple hardware. Has that changed? David -- David Ledger - Freelance Unix Sysadmin in the UK. HP-UX specialist of hpUG technical user group (www.hpug.org.uk) david.ledger at ivdcs.co.uk www.ivdcs.co.uk