A comment on “Memory Overcommitment in the ESX Server”

The VMware Technical Journal recently published a paper entitled “Memory Overcommitment in the ESX Server.” It traverses similar ground to my recent blog entries on the subject of VMware memory management, and similarly illustrates the large potential impact paging can have on the performance of applications running under virtualization. Using… Continue reading

VMware virtual memory management concepts

Virtual memory management refers to techniques that operating systems employ to manage the allocation of physical memory resources (or RAM) on demand, transparent to the applications that execute on the machine. Modern operating systems, including IBM’s proprietary mainframe OSes, virtually all flavors of Unix and Linux, as well as Microsoft… Continue reading