Linked by Thom Holwerda on Tue 30th Jan 2007 21:36 UTC, submitted by David Dengg
BSD and Darwin derivatives DragonFly 1.8.0 has been released. The biggest kernel change in this release is the addition of virtual kernel support and a virtual kernel build target. The biggest user-visible changes include updates to third party applications included in the base system, a major rewrite of NULLFS which removes all directory recursion restrictions from mount_null and removes nearly all the kernel resource overhead when using such mounts, and a multi-ip feature for jails.
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Don T. Bothers
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"That's not hype, that's the truth. Linux has been proven to scale well to the biggest machines currently available (2048 CPUs I believe). I don't think DF can make that claim. "

It is obvious by your comments, you are talking through utter ignorance. DF, if successful, will be revolutionary. You say Linux scales up to 2048 CPUs, but on what kind of system? Is this the same kernel I get on RHEL. Can I use this same kernel on a 4 CPU systemm? What Linux version allows you to mix any amount of computers with whatever amount of cpus and treats them all as one logical computer while being able to scale linearly? The answer is none.

DragonFly is the only serious OS doing this type of research. It will be able to accomplish this type of scalability because rather than rely on locking, spinning, threading processes to infinity, it will assign processes to cpus and then allow the processes to communicate to each other through messages. The two models of scalability are sufficiently contradictory that it becomes relatively impossible to implement both. I can assure you that if there is someone working on it, they stole the idea from Dragonfly and will either a) be forced to fork the Linux kernel (hence it is no longer Linux) or b) spend so much time trying to synchronize their kernel with the production Linux kernel that they will not ever get anywhere.

Edited 2007-01-31 23:29

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