DragonFly BSD 4.0.1

A BSD distribution and environment that borrows many features from other BSD operating systems
DragonFly BSD
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DragonFly is an open source BSD operating system designed to be the logical continuation of the FreeBSD-4.x OS series. It is very similar to other BSD-based distributions, such as FreeBSD, NetBSD or OpenBSD. It is a fork in the path, so to speak, giving the BSD base an opportunity to grow in an entirely new direction from the one taken in the FreeBSD-5 series. On top of that, it includes an unique set of features that differentiate it from other similar OSes.

HAMMER is the main attraction

HAMMER is DragonFly’s main attraction, a modern, high performance filesystem that features historic access functionality and built-in mirroring. The kernel is also one of the reasons why DragonFly is a better BSD distribution.

Offers two different schedulers for the kernel

DragonFly’s kernel includes two different schedulers, one that schedules all executable entities (Light Weight Kernel Thread) and another one that selects a single user thread at a time for each processor and abstracts out user threads (User Thread Scheduler). Additionally, the kernel features a complex kernel memory allocator comprised of an object-oriented memory allocator and a basic kernel malloc called kmalloc(), the DragonFly device filesystem (DEVFS), a virtual kernel (VKERNEL), NFS V3 RPC asynchronization, and a disk I/O scheduler framework (dsched).

Features, lots of features

Among other interesting features, we can mention the NULL Filesystem Layer (NULLFS ) that supports non-looping arbitrary mount points, TMPFS (Temporary Filesystem VFS), transparent disk encryption, managed SSD (Solid Storage Device) support, variant (context-sensitive) symlinks, DNTPD (DragonFly Network Time Daemon) and DMA (DragonFly Mail Agent). In addition, users will be able to checkpoint or suspend processes to disk at any time. The distro provides strong AHCI drivers, stable device names, as well as well grounded encryption and volume management.

Bottom line

Overall, DragonFly proves to be a modern, user-friendly and very accessible UNIX-like operating system. It can be used on a daily basis as a desktop system or as a powerful BSD server.

Reviewed by , last updated on November 26th, 2014

license type:
BSD License 
developed by:
The DragonFly Team
ROOT \ System \ Operating Systems \ Other
DragonFly BSD
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What's New in This Release:
  • Version 4 of DragonFly brings Haswell graphics support, 3D acceleration, and improved performance in extremely high-traffic networks. DragonFly now supports up to 256 CPUs, Haswell graphics (i915), concurrent pf operation, and a variety of other devices.
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DragonFly BSDDragonFly BSD

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DragonFly BSD is an open source BSD operating system packed with a plethora of state-of-the-art features and core...

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