From Xerox PARC: The first Ethernet cable, plus diagrams from Bob Metcalfe.
Month: June 2009
Sascha Wildner has added an option to the installer to create a UFS boot and Hammer volume as an install disk, in addition to the all-Hammer and all-UFS options already available. Programs expecting the booting kernel to be on UFS will be able to find it, but users still get the benefits of Hammer.
Updated: It replaces the all-Hammer option. Thanks for the correction, Sascha!
Matthew Dillon has a new version of Hammer, which speeds up listings from programs like ‘ls -la’ and ‘find’. This is only in 2.3.1.x code right now, so don’t force an upgrade via hammer version-upgrade if you’re still on DragonFly 2.2. His post includes some benchmarks.
On a side note: sili(4) tests look good.
Matthew Dillon has changed the way USB flash drives are attached, to make sure they don’t interfere with AHCI-attached disks. This is temporary, and will be replaced by a dynamic /dev.
Dru Lavigne is going to be doing blogging/tweeting for the FreeBSD Project and FreeBSD Foundation. This is a good thing – BSD in general is helped by more of a conversation about what’s going on. I daresay this Digest has established that there’s definitely enough events, just with DragonFly, for daily news.
Also, Dru’s published summaries of the articles in the upcoming July ‘Collaboration’ issue of the Open Source Business Resource.
Gleaned from the SoC mailing lists: the tenative dates for the 2009 Mentor Summit for the Google Summer of Code program is October 24th and 25th. Where? Probably Mountain View, CA.
This time, it’s what happens when you take Rogue, export it to Japan, and then see what you get back as a Sega Genesis console game.
I had no idea there were so many permutations of roguelike games. A few years ago, I’d have listed rogue, nethack, moria, [zmw]angband, and ADOM, and felt like I covered it all.
BSDTalk 175 (the semidemibicentennial?) has a 23 minute interview with Michael Dexter of BSD Fund. Did you know you can get a BSD Fund Visa card (if you are a U.S. resident) that contributes money on each purchase and has a beastie on the card? I did not.
The list of monthly topics for the Open Source Business Resource have been published. The list runs through the end of the year. If one of the topics is something you’re interested in, here’s your chance to get published!
Matthew Dillon’s made some small changes to Hammer; it should result in a small speedup when copying data.
It’s the weekend, so it’s a good time for a digression. This blog post from Matt Trout describes a lot of the code work he’s done for Perl, and what he thinks the best contribution is. The important part is the end of the post. He notes that for all the code he’s added, the best return has come from encouraging others to contribute. The net result has been a magnification of effort, as more people donate time.
The reason I’m posting this is to note that DragonFly, as a community, has been excellent so far at providing a low-drama environment for people to have ideas and contribute work. Keep this in mind; the best benefit to DragonFly isn’t lines of code, but people welcomed.
‘Haidut’ brings word of a 50-system DragonFly installation acting as web crawlers, with performance exceeding that of the Debian Linux systems they replaced. There’s more details about what’s being run, if you’re curious.
I recently did a bulk build of pkgsrc on two similar machines; the only significant difference being extra CPU work being done on one system, and Hammer snapshots on the other. However, they’re diverging in speed over time, which is interesting but not yet conclusive. Read my post about it for more details.
A good benchmarking project would be testing Hammer with snapshots on and with snapshots off.
Hasso Tepper posted his notes on the pkgsrc-users@ mailing list about the different video modes for the Intel video driver. Version 2.7 works, but only if you use certain options.
Matthew Dillon is relentlessly adding to his AHCI work, with a new status report summing up the speed and stability improvements. The driver will probably end up in the next DragonFly release.
Matthew Dillon has initial support in for port multipliers, along with other AHCI work. It’s not ready for production yet, and he lists the various issues going on, including a need for a different way to mount disks – AHCI changes devicenames from ‘ad’ to ‘da’, which can be a hassle.
Update: hot-swap support, too.
Update update: parallel scans for speed.
The freeze for pkgsrc’s 2009Q2 release starts this Sunday, the 14th. The 2009Q2 release should follow two weeks afterwards, which will be very close to the time of the next planned DragonFly release. (2.4, in case you weren’t counting.)
I’ve just finished a new build of the 2009Q1 packages for DragonFly 2.2, and it’s available on http://avalon.dragonflybsd.org/packages – setting BINPKG_SITES or using pkg_chk can get you these latest versions.
I plan to have a 2009Q2 package set for DragonFly 2.4 as soon as possible after release.
I’ve been posting a lot of “hey test this new technology” items, lately. That’s good. Since I haven’t done it already, here’s a description of AHCI.
Here’s some lazy Sunday reading about software licenses. Before you panic and quickly click away to something more fun, these are not flamewars.
This InformIT interview with David Chisnall of Étoilé talks about various things, but has an interesting note about BSD code and Apple about halfway down.
I think this is a much better way of encouraging corporate involvement in open source than legal bludgeons like the GPL. The BSD license is easy for even a non-lawyer to read and understand, so there is no confusion when using BSD-licensed code.
I’m thinking about this because there are people who still can’t figure out the difference.
Along the same lines, I was surprised by the number of open source programs found just by license listing in the new Palm Pre. I wish I had a spare $200.
If you want to try either one (warning: many parts still broken!), use a vkernel for the devfs so a physical system doesn’t get broken. There’s build instructions for pulling together AMD64 DragonFly.
Update: manual instructions for AMD64, too.
Not one, but two roguelike items! Close your eyes and click randomly if you have no interest in my little obsession.
I linked to articles from last week’s issue of the Economist before, but now that I made it to the other end of the magazine, there’s another one of interest that doesn’t mention open source but still relates to it: An article on intellectual property that covers how to handle antitrust legislation and companies where the property is mostly virtual. Useful to anyone who has dealt with the GPL and/or Microsoft. (i.e. everyone)
Also, not really open source related, but computer games can be good for you. I really like this magazine – not because I agree with them, but because they at least examine things in depth, and avoid the usual computing blunders you see in print.
If you don’t want to read the whole magazine yourself, there’s a nice summary available. (that link covers the previous week; recap of this issue possibly this weekend.
A useful BSD item from the Howling Void: BSD jails found to be more efficient than VMWare in given situations. I am both pleased and not really surprised.
The newest issue of the Open Source Business Resource covers Women in Open Source, with a larger-than-normal variety and length of articles.
As Hasso Tepper says, please don’t bring in any major changes until after DragonFly’s 2.4 release. This is mostly for the benefit of pkgsrc, so that we can have as complete a working set of packages as possible at release time. 2.4 will probably be in July.