The ‘hammer show’ command can be used to dump the B-Tree structure of a Hammer volume, and CRC errors can be spotted. It’s rare that anyone would need it, but if you do, this dumped information will include file hierarchy information.
If that makes you a bit nervous to repost any of that information when talking about it in public, Tomohiro Kusumi has added an ‘obfuscate’ option to ‘hammer show’ that does just that – it hides path information from the debug output.
Sepherosa Ziehau has continued his quest of making large-scale data transmission on DragonFly effortless; his latest change has cut the kqueue contention rate by two-thirds when dealing with a connection rate of nearly 400,000 connections per second. Note that’s number of connections, without even tracking the bandwidth used by each.
John Marino rearranged how GCC5 handles CPUTYPE settings. If you are specifically setting the target CPU when compiling, his commit will give you an exact list of what to target.
Note that I am not saying another architecture – this is all x86_64. I also don’t recommend doing this unless you have a specific use for it – compiler overoptimizations often create more problems than they fix.
All over the map this week.
Your unrelated link of the week: teasmades, 50% off with the code ‘MOTHERSDAY2016’ until March 9th. Given the difference in US – UK voltage, I don’t know if this would be a good investment for me, but I’d sure like to have one.
I hope you have some time for reading this week.
Garbage 16 is out, with OpenBSD news and general tech talk. There’s apparently progress on Raspberry Pi 3 support.
(Podcasts tend to be timely, and time-dependent, so I’m not saving this for the weekend In Other BSDs)
Daniel Bilik has found there’s an issue with i915 acceleration, Baytrail CPUs, and some AUTODEEP low-power states. This will only affect you if you are using that specific hardware combo and setting certain low power modes. Interestingly, it affects other platforms, too, as it appears to be a symptom of how the video is addressed, not a DragonFly-specific bug.
BSDNow 131 is out, and has an interview of Jamie McParland, on I assume the topic of BSD in school environments, guessing by the title and guest’s email address. It has the normal summary of news items, including explanations of load average I think many people would find useful.
I almost missed this: There’s a NYCBUG meeting tonight, at 6:45 PM, at the Stone Creek Bar and Lounge in New York City. The presentation will be from Raul Cuza, titled “BSD init(8) and rc(8): Room for Improvement?“. I imagine there will be an opportunity to complain about systemd’s very existence, at this meeting.
UNIX tools are this week’s unintentional theme.
Your unrelated robot link of the week: Every new Boston Dynamics robot is creepier than the last.
Look at the ZFS discussions if you want to feel smug as a BSD user.
Normally I’m just linking to BSDNow, but there’s even more BSD-themed media coming up today: BSDNow 130 is out, titled “Store all the Things“, with an extended summary of the recent Storage Summit.
Garbage episode 15 is out, titled “Compressing with Broccoli“. It notes a lack of activity for Bitrig – I still see commits happening, though.
Bill Yuan has added ‘ipfwsync’ to ipfw3 in DragonFly. As you may expect from the name, it’s a way to sync ipfw3 configurations across multiple devices.
I see this bite people irregularly over the years: if your default shell on login can’t run, what do you do? I’ve seen it happen because of a missing /usr/lib, and it can happen with out-of-date library references, too. There’s several different ways to deal with it:
That last one may be useful if your dports setup gets mangled, somehow – though ‘pkg upgrade’ has always worked for me.
Francois Tigeot has again updated Intel i915 video support in DragonFly, bringing it even with what’s in Linux 4.2. This will be very useful for Broadwell and Skylake users, and even Broxton, apparently the newest Atom platform.
Welcome the newest DragonFly committer: Bill Yuan. His ipfw3 work has been going on for a while.
I earn the roguelike tag this week.
- “I built Space invaders into Dwarf Fortress.” Featuring the Almighty Dwarven Calculator. (via)
- Free Lovecraft stories. (via)
- Imagining your future projects is holding you back. Talking about fiction, but this applies to open source work too. (via)
- Happy 25th, Webcam!
- @Play 83: HyperRogue
- Mac System 1.0 (via)
- ASCII cows. (via)
- The website of Bob Bemer, the Father of ASCII. COBOL, too? (via)
- Bell Labs in the 1960s. Note how many women were there. Rementioning. (Thanks, BSD32x)
- The scarcity of college graduates with FOSS experience. The license isn’t the important part where students learn; it’s the workflow: coordinating with others, source control, discussion channels, etc. That’s what isn’t taught enough. (via)
- “Here’s a quant fact: the online space is measurably dumber than it was two years ago.“
- Wired Style: A Linguist Explains Vintage Internet Slang. (via)
- The Lonely Dungeon, the random RPG rulebook generator linked last week, now has random illustrations to go with it. (via)
Your unrelated link of the week: The Voynich Manuscript and Codex Serahinianus, in PDF form. Ignore the “never-cracked ancient mystery” bit about the Voynich Manuscript, but it’s still interesting to look at.
Keep an eye out for BSD user group meetings in your area – just because I didn’t note it doesn’t mean it isn’t happening.
BSDTalk 262 is available, talking with Tex Andrews for 23 minutes about LightZone, “open source digital darkroom software”.
BSDNow 129 is available. Along with the normal news summary, it has an interview with John Marino, the fellow behind DragonFly’s dports system, and author of recently-noted-here synth, which has reached version 1.0.
DragonFly 4.4.2, a bugfix release to 4.4.1, is out. This was mostly prompted by the recent OpenSSL update, but other little fixes have made it in, too. It’s available for download and is probably available at your nearest mirror by now, if you want an image. The release page is updated, and there’s always the Git tag summary for 4.4.2 for the most exact details.
I have DragonFly shirts, helpfully printed up by Sepherosa Ziehau in China. I have a list of people that are interested in shirts, most of whom remembered to give a shirt size. I don’t have anyone’s email address or mailing address on that list.
If you are on that list, send me your mailing address.
The shirts are marked L/XL/XXL/XXXL, but they run smaller than U.S. versions of those sizes. I usually find a U.S. XL shirt baggy, but “XXXL” is the one that fit me, for instance. I’ll do my best to place the appropriate one. This is just an advance apology, since it’s too late to change anything if it turns out tight.
I’ll mail these out as I have the spare cash and time on hand. (I hope most of you live in the continental U.S.)
Rapid topic shifts this week.
Your unrelated tea link of the week: Cuppa Thugs.
Several book links this week.
Thing I should link more regularly: Garbage, a podcast that isn’t specifically about BSD but happens to cover it a lot. I linked to it when it was starting, but didn’t catch new episodes (fixed by finding the RSS feed). There’s been a bunch since then, so you have plenty of listening material now.
If you have a Broadwell system, the drm.i915.enable_execlists tunable added by Imre Vadász may keep your system stable. (thanks, zach on EFNet #dragonflybsd)
It would help with Burp, which is being ported to a number of BSDs.
BSDNow 128 has an interview of Nick Wolff, the usual roundup of news items, and I’m sure something that matches the title of the episode, but I haven’t listened to it yet.
Rimvydas Jasinskas has consolidated/restored/updated a large number of papers into share/doc on DragonFly. I’m not going to link to his large number of commits, but instead point you at the directory where they all went. There’s a number of design documents in there that date back to 4.4BSD and beyond (and some much newer), which may interest or educate you. Of special note: The Guide to the Dungeons of Doom, for rogue, or the KAME IPv6 implementation notes.
If you’re building from dports, and you want to include debugging information, you’ll want to put ‘WITH_DEBUG=yes’ in /etc/make.conf. Note that this affects anything you build at that point, including world, which you’d want to rebuild anyway.
These probably apply cross-BSD, but in this case, it’s DragonFly tips for printing with CUPS.
A bit nostalgic this week.
Your unrelated video link of the week: Aircraft Crash Tests Composite Data Film. (via)
If you have a Core2 processor in a DragonFly system, it may not work with accelerated video. If that happens to you with this (admittedly old) processor, switch to VESA for now.
Once again, I’m a bit late posting about BSDNow; blame my classes. BSDNow episode 127 is up, with Willem Toorop as the interview subject, talking about getdns, with a link to his vBSDCon presentation.
The slides from yesterday’s shell-fu presentation at NYCBUG have been posted.
NYCBUG is having a presentation tomorrow, February 3rd, 18:45, Stone Creek Bar & Lounge at 140 E 27th St. in New York City. The presenter will be Isaac Levy and the title is “shell-fu”. .ike is an energetic speaker and it’s worth your time if you are near enough.
BSDTalk 261 is up, and it’s a half-hour conversation with Kris Moore about jails, system management, and other I assume PC-BSD features.
AsiaBSDCon 2016 is happening in Tokyo, March 10-13. Registration for it opens today. The registration page isn’t up as I post this, but I assume very soon. (via)
I am proud of finding some of these links this week; they are not the usual “here’s what everyone else linked to” that you see.
Your unrelated graph link of the week: Visualizing HipHop trends from 1989 – 2015. (via)
Another week with plenty of links.
For those of you running DragonFly-current, the already-mentioned library privatization going on means that ports have to be rebuilt. You will want to do it yourself, or wait a little bit before upgrading if you want to install binaries.
BSDNow 126 has an interview with Ken Moore and Kris Moore of PC-BSD, along with the usual news roundup. There’s a DragonFly mention in the “open source work helps your career” news item that I did not know about but am happy to see.
That’s a pretty cryptic headline, isn’t it? John Marino has ‘privatized’ several libraries in DragonFly, so that they can’t get included involuntarily as part of a port build. That may mean you will need to perform a full rebuild of your system if you are tracking DragonFly-current.
(This is the way to fix ‘system’ languages like Perl was in FreeBSD 4.x – keep them clearly separate from the port version. It’s about a decade too late for that idea to work out, though.)
This has no effect on the actual operation of DragonFly, but it makes me feel better that it’s done: Rimvydas Jasinskas has gone through DragonFly source and removed the unnecessary 3rd BSD license clause, which is no longer needed.
For those of you with i915 video on your DragonFly system, there’s another update bringing DragonFly support to match what’s in the Linux 4.1 kernel. ValleyView and Skylake processor owners will benefit, along with a slew of other bugfixes and improvements.
The links get weird this week; get ready!
I’m always happy when I can compile news for at least 4+ different BSDs at once.
If you are looking to validate the data on your HAMMER volume, there’s several ways to do so, with one common-sense caveat.
This week’s BSDNow has an interview of John Baldwin, with a focus on running a DevSummit.
(linking to the Jupiter Broadcasting page cause the bsdnow.tv site isn’t updated as of this typing.)
Are you using a i915 video chipset? Are you using the DisplayPort? Imre Vadasz has added a tunable that may make it work better.
DMA, the DragonFly Mail Agent, is available in dports and FreeBSD ports, and is now available for NetBSD through pkgsrc-wip. (Thanks, Christian Koch)
I’m taking an online course and don’t have as much clicking-about time, unfortunately.
Your unrelated link of the week: Golem Arcana. For the miniatures gamer with a handheld.
There’s a lot of convention links this week, which is mostly an accident. If any of them are near you, go! BSD conventions are always fun, in my experience.
I almost missed it again! BSDNow 124 is up, with an interview of Igor Sysoev about nginx, plus the normal roundup.
Sepherosa Ziehau has an update to the em/emx(4) (or other Intel NICs) driver, for testing. Hey, remember what I said the other day about Skylake support?
There’s two important security updates for SSH. DragonFly release and development have been updated for it, and you can correct for it on your running system using the one-liner at Undeadly.
Note: keep in mind this is a client bug – it’s an information leak when you as a client connect out to somewhere else. A server, as an endpoint, is not affected.
New CPU support in DragonFly is continuing, and Matthew Dillon will be testing one of the newer Intel ‘Skylake‘ processors soon. That may mean even more accelerated graphics support at some point, too.
I’ve never heard of ‘McCabe Complexity‘ before now. It’s a description of how complicated software can be, measured by the number of possible paths through it. Pierre Abbat used that measure on Hammer code and not surprisingly, got a high number.
I am prewriting most of this post because I have a significant hardware changeout happening this weekend at work; let’s hope for quiet.
Your unrelated food link of the week: The teas to make you forget all about coffee. Not as smug as the usual tea article, thank goodness.
I had so many tabs open of things to post that I lost some until the last minute.
John Marino has opened up his new utility for testing: Synth. It’s made for building custom package repositories, similar to poudriere, but much less setup work. If you’ve ever said “I like binary installs, but I want my own build options”, this is for you. The README includes screenshots to show all the things it can do.
This week’s BSDNow episode has an interview with Josh Paetzel about ZFS, and lots of end-of-year/start-of-new-year prognostication.
This is a little thing, but so useful: the Wi-Fi indicator light on your iwm(4)-using device will now show its status under DragonFly.
Please welcome DragonFly’s newest committer: Rimvydas Jasinskas. He’s already done some adding and removing, and he’s been making a ton of dports changes for some time.
A reminder: NYCBUG is having an installfest tomorrow night, at 6:45 PM, at Stone Creek. Even if you’ve already installed a BSD on every bit of hardware you have, it’s still a good time.
The first link will bring you a lot more reading.
Your off-topic link of the week: The food timeline. This is one of those old-school sites without fancy formatting, created mostly though one person’s focus on a topic, and astonishingly in-depth. This sort of thing makes me so happy to see.
That first link is important. DragonFly, as a project, hasn’t had issues like that yet, but that’s more a side effect of it being a smaller project rather than anything else.
I missed posting this before: A new episode of BSDNow, with new items plus an interview with Alex Rosenberg, “Former Manager of Platform Architecture at Sony”. I assume that means Sony has or had a significant BSD installation, which I totally did not know about.
Even though DragonFly is not incorporated as a non-profit, there’s been a rash of unsolicited donations in the last few weeks, all of which are appreciated. For end-of-year – or start-of-new-year donations – there’s also the 501(c)3 organizations behind FreeBSD, NetBSD, and OpenBSD, too.
Francois Tigeot has updated DragonFly to match the video support found in the Linux 4.0 kernel. This will benefit you most if you are running Skylake, Cherryview, or Valleyview chipsets. Don’t ask me how to tell; the improvement has been so rapid I’ve lost track of which model codename is which.
The 32nd Chaos Communication Congress is running now, and is being streamed if you want to watch the talks as they happen. There’s a posted schedule.
Last of the year, and all the links are terse!
There’s some DragonFly links I snuck in here because why not?
Christmas doesn’t stop BSDNow from happening, and this week – along with the normal news summary – has an interview with Trent Thompson about virtualization on FreeBSD. Specifically, iohyve, the new management system.
(Linking directly to the broadcast site instead of the page with the full summary on the BSDNow site, because that summary page isn’t up as of me posting this.)
A number of people have reported problems with qemu and DragonFly, both running locally and on a host. It turns out to be a problem with the getcontext(), setcontext(), and swapcontext() functions, but Matthew Dillon fixed it in a way that doesn’t affect performance very much.
That apparently wasn’t good enough, so he added _quick versions of those same functions, so it became not just a fix, but an improvement.
In related qemu news: qemu-devel can use vknetd similar to a vkernel, now.
I was going to point at a new igb(4) update for testing, but Sepherosa Ziehau has already merged it. Try it if you have the right Intel networking hardware.
For those of you that are very bandwidth-constrained, or just impatient, there are xz-compressed images of DragonFly 4.4 available. (see ‘download live image’ area) The mirrors should have them too.
The latest episode interviews Robert N. M. Watson and George V. Neville-Neil for 36 minutes, about teachbsd.org. Also, BSDTalk has been running for 10 years! It’s been long enough I couldn’t remember if it started before the Digest.
Finally, a week of links you can get through in one sitting.
Yet another week that I started 2 weeks ago; this end-of-calendar-year is full of BSD goings-on.