Justin Sherrill – Page 145 – DragonFly BSD Digest

2015/05/11

Shut up ARP

Sepherosa Ziehau has introduced a new sysctl:

net.link.ether.inet.log_arp_creation_failure

Set this to zero and you won’t get endless ARP events from networks you aren’t on. For example, I’m hooked up to a cable modem. I only get a public routable IP address, but the network used for the cable modem network itself bleeds ARP packets out where my DragonFly machine can see it. Since it’s on a different network segment than the address I receive through DHCP, it always fails and the system logs it. For example:

May 11 05:20:52 www kernel: arplookup 100.68.112.145 failed: host is not on local network

I can’t do much about it since that layer 2 leakiness is going to happen, but I can shut it up with this sysctl – and thank goodness, cause I’ve been seeing these messages since first using a DOCSIS modem in… 2001 or so?

2015/05/102015/05/08

Lazy Reading for 2015/05/10

Accidentally very roguelike this week.

It’s ALWAYS DNS!
scroll, a console game that is also a pager. (via)
Reenix: Implementing a Unix-Like Operating System in Rust (PDF, via)
Yet another Dwarf Fortress story.
Rogue’s Item ID in Too Much Yet Not Enough Detail. Mentions the 1st Edition Dungeon Master’s Guide Appendix N, which despite having that book for most of my life, I hadn’t noticed. Time to read!
And I accidentally found that tor.com has already gone through these books and written about them.
One of the least well-known books on that Appendix N list is The Face In The Frost. Possibly my favorite book ever; look for it.
Hipsterhammer, Warhammer 40k musings. I haven’t played a minatures game in years. Blame computers. (All three links via)
The theme continues: phantasia(8), a Tolkien-influenced game I didn’t even realize came preinstalled on DragonFly and probably most other BSDs.
90’s electronics in animated GIF form. (via)
Prochronisms. (via)
FPS Toilet Museum. I love that the Internet can still enable single-minded things like this. (via)
git push –force (linked for the image)
5 Unusual Unix Commands for Cinco De Mayo
My Top 100 Programming, Computer and Science Books: Part Two
PathPicker – dump output containing filepaths into it, get a file selection dialog. It’s a command line utility. (via)

2015/05/092015/05/07

In Other BSDs for 2015/05/09

Whee!

A week of pkgsrc #9.
WordPress versus FreeBSD.
OpenBSD now has disklabel templates.
Application management made easy. (PC-BSD video, via)
DiscoverBSD for 2015/05/04.

2015/05/08

Broadwell support, other video changes

Francois Tigeot has committed his Broadwell work, which has a longer-than-I-realized list of benefits. Does anyone have a 4k screen to try?

2015/05/07

BSDNow 088: Below the Clouds

BSDNow 088 has an interview of Ed Schouten about FreeBSD, and all the normal roundups. Also “DragonFlyBSD has officially won the race to get an Intel Broadwell graphics driver”.

Maybe I need to start doing In Other BSDs posts on Wednesdays, cause BSDNow often has the links I’m already saving for the weekend.

2015/05/062015/05/04

NYCBug and Bitrig talk, tonight

John Vernaleo is giving a talk for NYCBug about Bitrig, tonight at 6:45 in New York City. See the announcement for details on location and etc.

2015/05/052015/05/04

DragonFly server and desktop

Jesse Wattenbarger wrote in with his success story of switching to DragonFly, both for server and desktop. Of note is his noticeable speedup with swapcache.

2015/05/04

More Intel video testing

If you’re running DragonFly-master and you have an Intel video chipset, Francois Tigeot has an update for you. It brings accelerated Intel video up to match the Linux 3.14 version, adds Broadwell chipset support, and should generally improve performance. He lists how to test right in the message.

2015/05/032015/05/03

Lazy Reading for 2015/05/03

I started sparse because this was a busy week, but I’ve still got a pretty good amount of reading for you.

Comparing code layout. Not the code, but the visual arrangement. This could certainly be explored further.
Schemaverse, a space strategy game implemented entirely within PostgreSQL. (via)
The Cray 2 Computer System. (pdf, via)
How to Operate the Apple II Plus. (via)
“Analog“. (via)
noTCP. (via)
My Top 100 Programming, Computer and Science Books: Part One
distribution, for ASCII histograms. I can think of many times this would have been useful.
Disinformation Visualisation: How to Lie with Datavis. (via)
How to pronounce hexadecimal. Not the word itself, but the numbers derived. Don’t actually do this. (via)
Penrose binning. (via)
Also, Go by Example. Linked because I like the description for it at the source.
The Words the Media Industry Prefers. The narrative made me laugh. (via)

2015/05/02

In Other BSDs for 2015/05/02

I’ve already mentioned the Hammer2/OpenBSD Summer of Code project (one of several), but here’s more:

The April issue of BSD Magazine is out.
OpenBSD on an iBook G4
Midnight BSD 0.6 is out.
OpenBSD 5.7 is out.
Lumina Desktop 0.8.4 is out.
PC-BSD 10.1.2 RC1 is out.
DiscoverBSD for 2015/04/27.
FreeBSD project report for 2015Q1.
Hacking “/ on ZFS” and GELI Encrypted Drives, the Old-School Way
Michael W. Lucas is giving a “Tarsnap talk” at mug.org on May 12 to match his book.
vBSDCon is happening September 11-13 in Reston, VA.

(No mailing list links this week; I’m way behind in my reading because of work. Sorry!)

2015/04/30

Hammer spreads via GSoC

DragonFly committer Joris Giovannangeli has a Google Summer of Code project. He’s bringing Hammer2 to OpenBSD, in single-node form. It’s a very difficult project, but Joris is a very talented worker.

2015/04/30

BSDNow 087: On The List

BSDNow 087 has an interview with Christos Zoulas, about NetBSD and blacklistd, along with the usual collection of news stories that I’m trying not to peek at because I’m behind on my usual reading and I want to get my own collection together for Saturday’s In Other BSDs.

2015/04/29

Reblock all the things!

Tomohiro Kusumi has been quietly making a lot of commits to Hammer. I haven’t been linking them because they don’t necessarily equate to new features, but here’s an recent exception: the -A argument will make your Hammer command run on every PFS. It only affects reblocking/rebalancing – for now.

2015/04/262015/04/24

Lazy Reading for 2015/04/26

We’re already 2/3 of the way to Christmas!

UNIX history book recommendations.
Networking for System Administrators, a BSD-friendly book I was slightly involved with, reviewed on Slashdot.
How UNIX system administration is like filing your taxes.
The history of computer data storage, in pictures. (via)
Ops books. How much of Github is not-code? (via)
The Heirloom Laptop’s Custom Wood Composite.
BrowserHack: NetHack ported to the web. (via)
Text adventure speed runs. (via)
People who could really break the Internet. (via)
This, everytime someone says “the cloud” (via)
The Forgotten Ones: Unisys SCAMP-D Mainframe. Linking to it because that’s where “Master Control Program” came from. (via)
Textblade. Sounds neat; I’d want to see it in action. (via)
The Philco 2000 Model 212’s retirement party. (via)
Good UNIX (History) books / material ?
Copper vs. fiber. (via)
Used Thinkpad Buyer’s Guide. (via)

Your unrelated tea links of the week: Do you even steep? The actual title is different, but I like that part of the link more. (Thanks, Jeff Ramnani) Also: Tea With Strangers. It’s exactly what it sounds like. Unfortunately, it’s not in my city. (via)

2015/04/252015/04/24

In Other BSDs for 2015/04/25

It’s been a relatively calm week, for once.

New Delhi has a BSD user group. (via)
PC-BSD and 4K — Oh my!
Is nvidia the best option for gaming on FreeBSD?
EuroBSDCon 2015 has extended the time for paper submission, cause they have so much to work through.
Hipster keyboard layout on NetBSD
The pkgsrc-security GPG key has changed.
Binary packages of pkgsrc-2015Q1 for illumos and OS X are available.
I like cross–pollination.
PC-BSD can now restore encrypted volumes over iSCSI.
Two more mentions of OpenBSD (though any should work) on Vultr.
Better OpenBSD performance on KVM via x2apic mode.
OpenBSD rolls their own file(1).
OpenBSD has W^X support for i386 userland now.
2-factor authorization on FreeBSD. (via)
My switch to OpenBSD, first impressions (via)
Microsoft .NET Running on FreeBSD 10.1/amd64 (via)

2015/04/24

NFS and Hammer slaves

You can now export Hammer slave volumes as NFS mounts – but since slave volumes are updated from master, you’re mounting a snapshot of that point in time. That may actually be an advantage.

2015/04/23

Building only one compiler

DragonFly builds two compilers by default. If you weren’t interesting in building both, there were switches to build only the default, like NO_GCC47. This changed with every compiler update.

With the switch to GCC 5, the new switch is “NO_ALTCOMPILER”. That will last through compiler changes. I’m mentioning this now because sooner or later, you’ll want to gain back some time on a buildworld.

2015/04/23

BSDNow 086: Business as Usual

BSDNow 086, just out, has the usual roundup of news, plus an interview with Antoine Jacoutot about OpenBSD and BSD in business environments.

2015/04/22

GCC 5 released, switched

DragonFly now has GCC 5.1 release. If you are running DragonFly master (i.e. 4.1), you’ll probably want to both rebuild world and kernel, and update your packages so they all match. There’s already packages built with GCC 5.1, so binary package upgrades can happen quickly. There’s GCC 4.7 packages still available if you aren’t making the jump yet.

If you’re on DragonFly 4.0.x – nothing’s changed.

2015/04/202015/04/17

CPU, RAM temperature monitoring

I’m late posting about these, but they go together: Sepherosa Ziehau has added the ability to read CPU temperature through various sysctls, and the same for DIMM temperature readings.