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So I was wondering if anybody knew if there was any performance issues with virtualizing a 32 bit os, in my case 32 bit windows 7, on a 64 bit os, mac osX lion. I remember reading that running 32 bit processes in a 64 bit system can cause performance robbing situations with paging memory. Does this apply to virtualizing or am I misinformed?
I fully understand that the performance of the guest also depends on the amount or memory and cores you devote to your vm, but I was wondering more on the mechanics and the effects of mixing 32 bits with 64 bits.
Thanks everyone.
16-bit applications running in the 32-bit VM are going to require emulation when the host has put the processor into 64-bit mode. – Ben Voigt – 2012-02-19T01:30:47.220
3You are misinformed. There is no penalty with running 32-bit guests or applications on a 64-bit host OS that isn't more than made up for by the performance benefits of a 64-bit host OS. That is, a 32-bit application or guest will almost always be as fast or faster on a 64-bit host than it would be on an otherwise equivalent 32-bit host. – David Schwartz – 2012-02-19T01:56:47.570