VirtualBox

Changes between Initial Version and Version 10 of Ticket #4392


Ignore:
Timestamp:
09/13/09 07:42:15 (5 years ago)
Author:
sandervl73
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.

Legend:

Unmodified
Added
Removed
Modified
  • Ticket #4392

    • Property Status changed from new to reopened
    • Property Version changed from VirtualBox 3.0.0 to VirtualBox 3.0.6
    • Property Summary changed from windows xp VM extremely slow when AMD-v is enable with 2 cpu to 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 

www.oracle.com
ContactPrivacy policyTerms of Use