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VirtualBox VMs optimization
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| 1. Set paravirtualization provider KVM for Linux (since 2.6.25) guests and Hyper-V for Windows (since Windows 7) guests. | |
| 2. Set ICH9 chipset for guest machine (may have some issues). | |
| 3. Enable nested paging. | |
| 4. Enable VT-x virtualzation. Notice: Runing both software and hardware virtualization simlutaneously slows down the emulation. | |
| 5. Enable "Virtual Processor Identifiers" (VPIDs). Has large performance impact but guest's CPU may depend on hosts's CPU: | |
| VBoxManage modifyvm VM_NAME --vtxvpid on | |
| 6. Enable large pages - gives up to 5% performance boost: | |
| VBoxManage modifyvm VM_NAME --largepages on | |
| 7. Enable SSE 4.1 and 4.2 for guest VM (an experemental option!): | |
| VBoxManage setextradata VM_NAME VBoxInternal/CPUM/SSE4.1 1 | |
| VBoxManage setextradata VM_NAME VBoxInternal/CPUM/SSE4.2 1 |
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