From what I can tell, Sepherosa Ziehau’s made some changes where you can control TCP timeout and keepalive timing on a per-tcpcb basis, or at least that’s what I gleaned from the docs. He’s been doing a lot of work lately, but it’s hard to link to because so much of it is at a basic level that makes it difficult to summarize in terms of how the features affect the user.
DragonFly had another good year with Google’s Summer of Code program. We had 6 slots, and 5 passed projects. (Irinia, if you’re reading this – where did you go?) This is our 4th year participating in Summer of Code, with I think the highest number of passed projects to date.
Here’s all the finished projects, with links to the original descriptions:
- Bring kernel event notification in DragonFly BSD to its logical conclusion – Samuel Greear
- Implementing a mirror target for device mapper – Adam Hoka
- Improve dsched interfaces and implement BFQ disk scheduling policy – Brills Peng
- Port PUFFS from NetBSD/FreeBSD – Nick Prokharau
- Porting Virtio Drivers from NetBSD to DragonFly BSD to speed up DragonFly BSD as a KVM guest – Stephanie Ouillon
Thanks is also due to the mentors and other that helped out, via IRC and email: Aggelos Economopoulos, Alex Hornung, Joe Talbott, Matthias Schmidt, Michael Neumann, Nathaniel Filardo, Pratyush Kshirsagar, Sascha Wildner, Thomas Nikolajsen, and Venkatesh Srinivas
You can also check the Digest’s “Google Summer of Code” category for progress reports made as the summer went on. The source code from the projects is available at the DragonFly/SOC 2011 Google Project Page. In even better news, 2 of the projects have already been partially committed to DragonFly – Brills Peng’s scheduler work, and Adam Hoka’s device mapper mirror project.
Some ISA devices have been removed from DragonFly. That probably affects approximately 0% of everyone, cause they’re old devices, but a few of them are were in the GENERIC kernel configs, so you’ll get an error for an unrecognized option when you next rebuild your kernel using a GENERIC-based config, based on an older version of GENERIC. The description of which drivers went is quite sensibly placed in UPDATING.
John Marino, who already has commit access for DragonFly, now also has commit access for pkgsrc. What does this mean? It means if you have a pkgsrc problem, submit it through NetBSD’s Problem Report system as normal, and maybe let him know about it too. He’s already made some DragonFly-specific fixes.
I posted some ideas about changing how DragonFly does releases. In short, I’d like to see a long term release, and otherwise point people at a rolling release; e.g. that day’s build. There are other people that think the same way about speeding up releases of other software. (Thanks, Samuel Greear for that last link)
Noticed through a saved Google search: DragonFly BSD support as part of Puppet. This was thanks to the work of a ‘jaydg’. Thanks, person whose name I probably should know!
The recent OpenBSD 5.0 pre-release announcement on undeadly notes that ALTQ is being replaced by new priority settings. This should make it to DragonFly at some point, since pf in DragonFly has been catching up to the current version of pf in OpenBSD, thanks to the efforts of Jan Lentfer…
The Call for Papers for the 28th Chaos Communications Congress is out, as Matthias Rampke noted. Each year, there seems to be at least a few DragonFly people there…
BSD Magazine’s September issue is out. This time, I have an article in it about data recovery with Hammer:
We’ve all experienced instant regret. That’s the feeling that comes within a second of executing a command like “rm -rf * .txt” (note the space) or of cutting the wrong cluster of wires at the end of a long conduit. Not that I am quoting from experience, or anything like that, no…
Sascha Wildner has updated ndis(4), the wrapper that makes Windows network drivers usable on DragonFly, with an extensive description of what’s changed.
Sascha Wildner updated time zone files again. It’s a regular thing, but I wanted to draw attention to this little change:
Samoa moves from east to west of the international date line (changes from UTC-11 to UTC+13). It will skip December 30, 2011.
2011/12/30 in Samoa will never exist or have existed, which is entirely odd.
Brills Peng has written up a nice description of his scheduler work for Google Summer of Code, with details on what it does, and how to try it out. Best of all, he plans to keep working on it!
Another batch of code has arrived from Google Summer of Code student work. In this case, it’s code from Adam Hoka’s “Implementing a mirror target for device mapper” project, committed by Alex Hornung. I think there’s potentially more to come.
Ferruccio Zamuner is doing a lightning talk about DragonFly at the sixth annual Italian Perl Workshop, September 9th in Turin, Italy. I mentioned this back in May, but now there’s a concrete date, and it’s about a week and a half away.
If DragonFly/x86_64 fails to install on your system, but DragonFly/i386 works, try again. Sepherosa Ziehau has a fix for the keyboard controller that may make x86_64 systems boot DragonFly when previously they did not.
The next release of pkgin, the binary package installer for pkgsrc, is imminent. I link to the note about this because the new features list sounds good, including a significant speedup.
Google Summer of Code for 2011 just finished, and there’s already source code from it showing up in DragonFly. In this case, scheduler work, including multiple schedulers. I’ll have a more detailed report soon…
As part of a larger thread, Chris Turner went into a longer explanation of how PPTP connections work. Do you have PPTP working on DragonFly? Please share details!
If you’re committing something to DragonFly, or even just working on your own Git repository so as to submit a patch, the new-to-me-and-not-actually-secret committer(7) man page has a lot of tips. I’m linking to it because it holds a lot of information that otherwise would be something you’d have to soak up over time from the community, maybe.