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Old 27th April 2011
J65nko J65nko is offline
Join Date: May 2008
Location: Budel - the Netherlands
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Default DragonFly Release 2.10

From the 2.10 release notes

Hardware and multiprocessor support - This release supports a much larger variety of hardware and multiprocessor systems than previous releases, thanks to updates of ACPI and APIC and ACPI interrupt routing support.

Hammer Deduplication - Hammer volumes can now deduplicate volumes overnight in a batch process and during live operation. The 'hammer dedup-simulate' command can be used to estimate space savings for existing data.

Packet Filter (pf) - Pf was updated to a version based upon OpenBSD 4.4. The previous version of pf in DragonFly was based on OpenBSD 4.2.

Compiler updates - DragonFly now uses gcc 4.4 as the default system compiler, and is the first BSD to take that step.

New bridging functionality - The bridging system has been rewritten. Multiple interfaces on a single system can be bound together transparently under a single virtual MAC address, and bandwidth aggregated to that new interface.

MP Performance - The MPLOCK (the primary lock, that when held ensures only a single cpu is operating within the kernel) has been removed from every area except the VM system. DragonFly is one of the few non-academic operating systems to use a primary sychronization mechanism that is not a blocking mutex

Overall Performance - DragonFly now offers significant performance gains over previous releases, especially for machines using AHCI or implementing swapcache(8).

ACPI Support - Major update to DragonFly's ACPI support have been made, particularly for interrupt routing.
You don't need to be a genius to debug a pf.conf firewall ruleset, you just need the guts to run tcpdump
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