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I went to an OpenSolaris users group last year. They were talking about new network features like being able to assign sub-interfaces to different zones. Stuf
by illumin8 16y ago
I went to an OpenSolaris users group last year. They were talking about new network features like being able to assign sub-interfaces to different zones. Stuff that VMware ESX had available for years. I was thoroughly unimpressed. The concept of Zones or FreeBSD jails has some appealing aspects; not needing to load multiple kernels in memory, for example, but by this time, Hypervisors such as VMware that deduplicate memory blocks pretty much negate any advantage Zones/Jails once had.
ZFS definitely has some potential though. I hope it will be released under a more liberal license that will allow a direct Linux kernel module as opposed to fuse support.
- patrickgzill 16y agoWhat kind of ratios are you actually seeing with VMware's deduplicate memory features? I have not seen much on anything I am running, though I admit I don't have them overcommitted very much on RAM (total RAM allocated to all VMs is about the same as physical RAM in the system).
- illumin8 16y agoThis really depends on what you are running. If you're running an eclectic mix of Windows, Linux, all running different applications and software, you might not get much benefit. Most of our VMs are all running Windows Server 2003 (ugh!) and the exact same terrible web application so we get pretty good savings; about 50%.
- ant5 16y agoI went to an OpenSolaris users group last year. They were talking about new network features like being able to assign sub-interfaces to different zones. Stuff that VMware ESX had available for years. Zones and ESX are very different beasts, and de-duplication of memory is only part of the issue when you're talking about virtualization of user-space versus hardware virtualization.