Linked by Thom Holwerda on Tue 6th Apr 2010 21:56 UTC, submitted by Stathis
BSD and Darwin derivatives DragonFly BSD 2.6.1 has been released. "There are numerous big-ticket features in this release as found in the release notes, plus a ton of stability and performance work."
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RE[3]: Coming along.
by kaiwai on Wed 7th Apr 2010 10:57 UTC in reply to "RE[2]: Coming along."
kaiwai
Member since:
2005-07-06

Yes, I'm curious what part of that requires dragonfly?

I like the roadmap and the design of hammerfs, not sure what the real tangible benefits of them are exactly. When designing an entire system like this, its tough to keep up with all of the other performance improvements in oses with more manpower.

I think dragonfly needs to a better job of "selling the dream" with specific use cases and a plan of how to get there from here, to enlist some fellow dreamers. Maybe even some dreamers with a business plan that builds on the dream.

I fear Dragonfly may end up being Plan 9 V2, a technically superiorly designed os by brilliant engineers, that isn't better enough than its predecessor.


Correct me if I am wrong but as I understand it DragonflyBSD approaches the issue of scalability from a different angle than traditional operating systems so what it should mean is that in the long run - in a world of multicoreness that we'll see operating systems like DragonflyBSD pull ahead of the competition because of the fundamental underpinnings that make it different from other operating systems.

Occasionally it takes not only a better operating system but also the right circumstances in the industry that results in the emergence of that operating system being 'the in thing' - just as Linux emerged as the good enough alternative to expensive proprietary UNIX's when it was first started to be used in ISP's. It was good enough and cheaper, now the other benefits that existed back then (open source) are only now starting to be appreciated by the mainstream.

Good things take time and I have a feeling that the lead programmer is quite happy to plod along at a steady pace knowing that the goal will be reached.

Reply Parent Score: 4

RE[4]: Coming along.
by ebasconp on Wed 7th Apr 2010 14:37 in reply to "RE[3]: Coming along."
ebasconp Member since:
2006-05-09

Completely agree.

What is beautiful about DragonFly is that is a set of new features or new approaches coming in an already usable system. They do a lot of very impressive things but their system is still running!

Their vkernel implementation is simply amazing, same than its HammerFS (ported to Mac OS X some days ago).

Reply Parent Score: 2

RE[4]: Coming along.
by Bill Shooter of Bul on Wed 7th Apr 2010 16:47 in reply to "RE[3]: Coming along."
Bill Shooter of Bul Member since:
2006-07-14

Yes, I would like more explanation about their differing approach to scalability and the potential benefits in a multi core environment over FreeBsd and Linux.

Something like this [forgive the technical mistakes I'm venturing into an area where i am not an expert]:


One of the features they mention is multiple processes working on a single file in a non blocking simultaneous manner.

One potential application of it would be something like Mysql's innodb table space. If it were previously blocked form simultaneous writes to the differing tables within, allowing multiple simultaneous writes to it could potentially speed things along.

Of course because the changes are at the os level, they couldn't be implemented in a portable manner, but lets say their was a special version just for dragonfly. Is there a driver for enterprise level flash PCI cards like io fusion? No .. well then the storage system on DragonFly is at a disadvantage and the technically inferior Linux/FreeBSD sequential write methodology could still beat the crap out of it due to the faster storage.

Reply Parent Score: 2

RE[5]: Coming along.
by kaiwai on Thu 8th Apr 2010 00:48 in reply to "RE[4]: Coming along."
kaiwai Member since:
2005-07-06

Yes, I would like more explanation about their differing approach to scalability and the potential benefits in a multi core environment over FreeBsd and Linux.


Here is a document I found, but it doesn't go greatly into depth:

http://www.dragonflybsd.org/presentations/dragonflybsd.asiabsdcon04...

Reply Parent Score: 2

RE[4]: Coming along.
by nt_jerkface on Wed 7th Apr 2010 18:39 in reply to "RE[3]: Coming along."
nt_jerkface Member since:
2009-08-26

in a world of multicoreness that we'll see operating systems like DragonflyBSD pull ahead of the competition because of the fundamental underpinnings that make it different from other operating systems.


Yes but only if the gains are significant.

Reply Parent Score: 2