BSDDay Argentina is starting to look for speakers. The official site doesn’t list 2011 dates yet, but it’ll be in November, in Buenos Aires. (via Damian Vicino) Alex Hornung gave a DragonFly presentation there last year…
There’s still a few packages in pkgsrc that don’t support DESTDIR (e.g. being built by someone other than root). If you want to help out, here’s a list of those 60 packages.
A nice big pile of links this week. Some of these may have cropped other places by now, but oh well.
- An interview with Dennis Richie about inventing Unix. (via) I like that he sounds just absolutely tickled that there’s a version of ‘his’ operating system on his phone.
- A nice article describing Project Euler, for those who want to program; or program more. (via several places)
- Michael Lucas points out something that isn’t new but still needs reinforcement: avoid SSH1.
- Anecdotal evidence that SSD drives fail a lot. On the other hand, the bulk builds I’ve done of pkgsrc have worked the crap out of several SSDs and I haven’t killed a single one.
- Weird things in IPv6 routing. (indirectly via this, via ftigeot on #dragonflybsd IRC)
- Aw, Google’s BSD-specific search page is gone. Not that it was really needed at this point; I hadn’t seen a difference in the search results for some time. There’s more pressing issues.
- The FreeBSD Foundation has a trip report from Sergio Ligregni and from Thomas Abthorpe, from sponsored trips to BSDCan 2011. I’d encourage everyone to make it to a BSD convention – it’s energizing to see others working on BSD, in person.
- I don’t think you really need a guide for this. (via)
- Emacs user at work.
- Totally unrelated: best dubstep video ever.
The Open Source Business Resource magazine is going with a rare unthemed issue in August. So, this is your chance to get published on your own specific business/open source topic! Articles are due by July 10th.
Venkatesh Srinivas is making vmobj_token and vm_token much more fine-grained. That’s great, but watch out over the next few weeks as this work goes into 2.11. (i.e. don’t upgrade your DragonFly 2.11 unless you are ready for surprises.) Venkatesh has already found some.
Do you have a DragonFly workstation? That you play audio on? Do you have headphones hooked up? Is it using Intel High Definition Audio? (snd_hda) Does connecting the headphones disable the system speaker?
You can probably guess exactly what I’m trying to troubleshoot given the above questions.
Here’s two items I meant to post and for some reason did not:
- Sven Gaerner posted a short description of how he migrated his DragonFly system from a hard disk to a SSD. This may be useful for anyone considering a move. Decent-sized SSDs are reaching low prices these days.
- Tim Bisson posted an update on his work on TRIM support for DragonFly. The code is available now if you’re feeling lucky.
It’s World IPv6 Day. You can go to IPv6 right now with your DragonFly system. If your ISP doesn’t support IPv6, you can try a sixxs or HE tunnel. Also, nag your ISP about it.
The newest issue of the Open Source Business Resource is out, with this being a second issue on Technology Entrepreneurship.
The i386 architecture now supports LAPIC and I/O APIC. If you had weird interrupt problems when installing DragonFly before, now might be a good time to try the latest bleeding-edge version of DragonFly and see if the problem vanished.
Short but good this week.
- I always enjoy seeing other people’s window configs, even if I don’t use them.
- The CCBY license is very similar to the BSD license – and there’s some big institutions using it. That is good news for everyone.
- I linked to telehack before, but I didn’t realize how huge it was. There’s 25,000 virtual hosts in there, recreated from history, complete with realistic user lists. You can ‘hack’ into hosts, or run games and BASIC files. (hammurabi!) It even recreates early USENET. Read the description of what to do – it gets really interesting about halfway down. It’s an Internet Simulation, if ever there was one. (via)
- Remember I posted earlier this week about my results with deduplication? I had about a 7% gain of the disk. As time has gone on and the Hammer reblocker was able to work overnight, I’m now up to a gain of 10%. Neat!
- Also: I got Minecraft working (as a server) on DragonFly. See the comments on my original it’s-almost-working post.
- RAS Syndrome: Recursive Acronym Syndrome Syndrome. For anyone who has typed “GNU”. (via)
BSDTalk has a 17-minute interview with Josh Paetzel about FreeNAS 8. Every time Will Backman makes it to a convention with a tape recorder, we all benefit.
Sepherosa Ziehau’s made it possible for uniprocessor kernels to use the LAPIC and IOAPIC functions on x86_64, which means better timer support, less need to fiddle with configs, and more supported hardware. A win all around! Set hw.lapic_enable=”0″ if there’s trouble. The same changes for i386 are on the way.
The dragonflybsd.org network is going through some network changes; access may be spotty in the next… 24 hours?
The June issue of BSD Magazine is out, with the title being “NanoBSD and Alix”, but there’s plenty more articles in there. DragonFly news is on page 25 – if this month is better for me than last month, I hope to have more in there.
Stéphanie Ouillon has posted extensive details on the Virtio Google Summer of Code project; a few questions are included for anyone who wants to jump in and offer feedback.
I added a Google “+1” button to the site, over on the right. Not that the site really needs it, but it tickles me that they’re using an old (but still in use) meme for this idea. I’d link to places it was used on our own DragonFly mailing lists, but searching for “+1” isn’t working too well.
Fresh from BSDCan 2011, an interview with Ingo Schwartze and Kristaps Dzonsons, mostly about mdocml. (Which is already present in DragonFly.)
I moved to DragonFly 2.10 over the past few days, and I tried out deduplication, to see what kind of results I would get. The procedure is outlined below. I’m using /home here as an example, just to reduce the amount of text pasted in.
/pfs/@@-1:00004 966000640 566434576 399566064 59% /home
Move my various Hammer pseudo-file systems to version 5, which supports deduplication.
# hammer version-upgrade /home 5
Issue a deduplication simulate command, to see what it guesses will be the savings:
# hammer dedup-simulate /home
Dedup-simulate /home: objspace 8000000000000000:0000 7fffffffffffffff:ffff pfs_id 4
Dedup-simulate /home succeeded
Simulated dedup ratio = 1.22
That ratio turned out to be pretty accurate for the actual deduplication. I didn’t time it, unfortunately. I don’t know if the time taken is proportional to the amount of deduplication or the total volume of data, though I suspect the latter.
# hammer dedup /home
Dedup /home: objspace 8000000000000000:0000 7fffffffffffffff:ffff pfs_id 4
Dedup /home succeeded
Dedup ratio = 1.22
462 GB referenced
378 GB allocated
14 MB skipped
6869 CRC collisions
0 SHA collisions
0 bigblock underflows
The end result?
/pfs/@@-1:00004 966000640 505887504 460113136 52% /home
That data space is shared across all file systems, and it’s a 1TB disk, so it’s 7%, or 70GB. I was hoping for more, but I don’t have any obviously duplicated data (no local mail store, no on-disk backups), so perhaps this is normal. 70GB that I didn’t have before is no bad thing, though.
Incidentally, I was able to upgrade my installed software from pkgsrc-2009Q4 to pkgsrc-2011Q1 entirely using pkg_radd -u <pkgname>. Remarkably quick and painless, though pkgin may have been able to do it even faster since it would pull from the same place.
Whee!
- Do you like the Opera browser? Apparently all it takes is a little misspelling to confuse it with a U.S. daytime talk show host. The “Best of Oprah emails to Opera“. (via) Mistaken identity on the Internet is always fun.
- Popular free software licenses, described. (via) One of the better, non-polemic descriptions I’ve seen.
- For the opposite effect, the Free Software Foundation’s license recommendations. Somehow, the BSD license isn’t even mentioned. (via) A commenter at the source link notes that the GNU Free Documentation License isn’t even considered ‘free’ by Debian. Along those lines, I’ve always thought that GPL licensing creates a perverse incentive to keep your software undocumented.
- The FreeBSD and NetBSD Foundations have acquired a license for libcxxrt from PathScale, which I assume is for C++ support in conjunction with clang. (or pcc?) This isn’t as much of an issue for DragonFly right now since we’re continuing down the GCC route.
- Temple of the Roguelike, a searchable database of roguelike games. It’s an idea that you would totally expect for this genre. (via trevorjk on EFNet #dragonflybsd) Also: a roguelikedev subreddit.