id,summary,reporter,owner,description,type,status,component,version,resolution,keywords,cc,guest,host 4392,Huge IO-APIC/guest SMP overhead with 32 bits guests,rafael,,"Symptoms are high CPU usage while running e.g. 32 bits Windows XP/2000 guests with IO-APIC enabled. '''Current status:''' * fixed for AMD-V in !VirtualBox 3.0.6 (requires 3.0.6 guest additions to be installed) * fixed for VT-x, but only if the Intel CPU supports 64 bits (leaves out Core Solo/Duo); fixed in 3.0.12 (requires 3.0.12 guest additions to be installed) * Solaris/OpenSolaris guests have similar issues, but a kernel fix is underway. '''Does not apply to:''' * 64 bits guests * 32 bits Windows Vista or Windows 7 ",defect,closed,VMM/HWACCM,VirtualBox 3.0.6,fixed,,,other,other