Changes between Initial Version and Version 10 of Ticket #4392
- Timestamp:
- Sep 13, 2009 7:42:15 AM (15 years ago)
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Ticket #4392
- Property Status new → reopened
- Property Version VirtualBox 3.0.0 → VirtualBox 3.0.6
- Property Summary windows xp VM extremely slow when AMD-v is enable with 2 cpu → Huge IO-APIC/guest SMP overhead with 32 bits guests
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Ticket #4392 – Description
initial v10 1 ver 3.0.0 r49315 1 Symptoms are high CPU usage while running e.g. 32 bits Windows XP/2000 guests with IO-APIC enabled. 2 2 3 windows XP VM run extremely slow when 2 cpu is enable with AMD-V and IOAPIC on AMD x2 4800+ cpu. 4 Previous Windows XP created on 2.2.X Virtualbox run way faster than that created on 3.0 Virtualbox. 3 Current status: 4 - fixed for AMD-V in VirtualBox 3.0.6 (requires 3.0.6 guest additions to be installed) 5 - still relevant for certain Intel CPUs without the APIC access hardware optimization feature 6 - Solaris/OpenSolaris guests have similar issues, but a kernel fix is underway. 5 7 6 Furthermore, when enabling multiple CPU, the physical CPU's are pegged. 7 8 In addition, install of windows XP would never finish when using 2 VCPU, while install using 1 CPU does finish, but the speed in comparison to Virtualbox 2.2.X performance/install/experience is way worse than 2.2.X release. 9 10 Question, how do I get to the log files, that would be useful for debug ? 8 Does not apply to: 9 - 64 bits guests 10 - 32 bits Windows Vista of Windows 7