Ecrit par steph (Visiteur), le 10-07-2007 12:50
Légèrement en retrait ? La gestion de la mémoire et des entrées-sorties (16 canaux virtuels, 32 périphérique/canal) est 100% matérielle du côté d'AMD donc la participation d'INTEL dans l'introduction en Bourse (IPO) de WMware n'y changera rien. AMD-V (virtualisation totalement matérielle) : Shadow Page Tables + Nested Page Tables + I/O virtualization (512 périphériques) Ça n'est pas du tout le cas avec l'offre actuelle d'Intel... mais Nehalem (Core 3 ?) n'est plus très loin et copiera l'architecture DirectConnect d'AMD (contrôleur mémoire intégré + liens point à point full duplex)... AMD-V (virtualization) : To enhance speed and provide greater performance in multi-OS environments, a new hardware feature replaces a previous software algorithm, which translated virtual addresses into linear addresses (nested paging). While this process is slow in software, the hardware speedup will be notable. Since this translated information is required by the hypervisor (a hypervisor is a software program which allows virtualization to function), this new ability, according to AMD, will allow a cooperative environment with several operating systems running simultaneously to be observably faster due to the new hardware. + AMD I/O virtualization technology provides mechanisms to support virtualization software in managing, partitioning, and securing I/O devices, which is anticipated to result in improved performance and less implementation complexity in providing I/O in virtual environments. |