Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2011-04-12
2011-04-12
Ellis, Kevin L (Department: 2187)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
Reexamination Certificate
active
07925850
ABSTRACT:
A system for increasing the efficiency of migrating, at least in part, a virtual machine from a source host to a destination host is described wherein the content of one or more portions of the address space of the virtual machine are each uniquely associated at the source host with a signature that may collide, absent disambiguation, with different content at the destination host. Code in both the source and destination hosts disambiguates the signature(s) so that each disambiguated signature may be uniquely associated with content at the destination host, and so that collisions with different content are avoided at the destination host. Logic is configured to determine whether the content uniquely associated with a disambiguated signature at the destination host is already present in the destination host memory, and, if so, to back one or more portions of the address space of the virtual machine having this content with one or more portions of the destination host memory already holding this content.
REFERENCES:
patent: 6075938 (2000-06-01), Bugnion et al.
patent: 6789156 (2004-09-01), Waldspurger
patent: 7634657 (2009-12-01), Stringham
patent: 2008/0127182 (2008-05-01), Newport et al.
Sapuntzakis, Constantine P. et al., “Optimizing the Migration of Virtual Computers,” USENIX Association,5thSymposium on Operating Systems Design and Implementation, pp. 377-390.
Waldspurger, Carl A., “Memory Resource Management in VMware ESX Server,”Proc. Fifth Symposium on Operating Systems Design and Implementation(OSDI '02), Dec. 2002, pp. 1-14.
Nelson, Michael et al., “Fast Transparent Migration for Virtual Machines,” USENIX Association, 2005USENIX Annual Technical Conference, Anaheim, California, Apr. 10-15, 2005, pp. 391-394.
Chen Xiaoxin
Colbert Osten Kit
Venkatasubramanian Rajesh
Waldspurger Carl
Davidson Chad L
Ellis Kevin L
VMware, Inc.
LandOfFree
Page signature disambiguation for increasing the efficiency... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Page signature disambiguation for increasing the efficiency..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Page signature disambiguation for increasing the efficiency... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2729696