VirtualBox

Changes between Initial Version and Version 10 of Ticket #4392


Ignore:
Timestamp:
Sep 13, 2009 7:42:15 AM (15 years ago)
Author:
Sander van Leeuwen
Comment:

mike: please don't mention unrelated problems in this defect. If you still see this xp64 abort with 3.0.6, then open another defect with a proper description and VBox.log.

greerga: your Intel CPU doesn't support the APIC access optimization. I intend to enable the same fix once we get more feedback about AMD-V.

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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

  • Ticket #4392 – Description

    initial v10  
    1 ver 3.0.0 r49315
     1Symptoms are high CPU usage while running e.g. 32 bits Windows XP/2000 guests with IO-APIC enabled.
    22
    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.
     3Current 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.
    57
    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 ?
     8Does not apply to:
     9- 64 bits guests
     10- 32 bits Windows Vista of Windows 7

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