DragonFly BSD Digest » Google Code-In

Google Code-In 2012 winners

Justin Sherrill — Fri, 08 Feb 2013 02:43:42 +0000

DragonFly didn’t participate this year, but it’s worth looking at the winners of the Google Code-In work for 2012 – there’s two people that were working on NetBSD in there.

Google Code-In: participants?

Justin Sherrill — Wed, 26 Sep 2012 00:24:45 +0000

Google Code-In 2012 has been announced. I’m not going to be able to coordinate it for DragonFly this year… anyone want to step up?

Google Code-In for 2011

Justin Sherrill — Sat, 22 Oct 2011 03:22:14 +0000

Google’s running the Code-In project again for 2011, where open source projects mentor 13-17-year-olds on a variety of small projects. DragonFly participated last year and had lots of good work done. However, we need ideas, the more the better. Please add whatever comes to mind.

Trying out deduplication

Justin Sherrill — Mon, 30 May 2011 23:54:53 +0000

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 . Remarkably quick and painless, though pkgin may have been able to do it even faster since it would pull from the same place.

Hammer and the future

Justin Sherrill — Fri, 06 May 2011 01:59:07 +0000

Matthew Dillon’s been thinking about Hammer, and how to implement clustering well enough to work as a sort of RAID replacement. He’s written up a document describing his plans. Some highlights:

writable history snapshots
quotas and accounting
live rebuilds of data from mirrors
and the same history, mirroring, and snapshots as before.

It’s going to be a while before this “Hammer 2″ becomes a finished product, though, so don’t count on it for the next release.

Google Code-In winners listed

Justin Sherrill — Tue, 15 Feb 2011 03:45:45 +0000

The winners of Google Code-In have been posted. They win a trip to Google (remember, they are 13-18 years old) and an impressive item on their resume. And yes, some of those names there worked on DragonFly projects.

More Google Code-In work arrives

Justin Sherrill — Sun, 06 Feb 2011 05:05:17 +0000

Samuel J. Greear committed some more code that happened to come from DragonFly/Google Code-In projects. There’s a surprising large amount of code that came from those projects…

Google Code-In wrap-up write-up

Justin Sherrill — Thu, 27 Jan 2011 00:31:05 +0000

Samuel J. Greear has written a summary of DragonFly’s experience with Google Code-In 2011, noting that the students tacked harder projects than expected, and relatively easy documentation projects were less popular than expected. He has hard numbers on tasks done, too.

I think this article holds the “number of hyphens in a title” record for this blog.

Google Code-In, and sysctls too

Justin Sherrill — Fri, 24 Dec 2010 01:59:16 +0000

Ed Smith was thinking of working on sysctl documentation, but as it turns out, a lot of it has already been done via Google Code-In; Samuel Greear recently committed a lot of it. (Though there’s more sysctl work possible.)

While on that topic, Samuel Greear also posted a lengthy summary of all the Code-In work done so far. We need more code-related tasks! The existing ones have been so popular that they’re all getting done, quickly.

libfsid created

Justin Sherrill — Wed, 15 Dec 2010 02:55:43 +0000

Another Google Code-In project arrives: libfsid. It’s used to get the volume label for a given file system. (see man page) It makes me happy to see more Google Code-In projects coming to fruition and getting committed – suggest more, if you have them!

Google Code-In so far

Justin Sherrill — Sat, 11 Dec 2010 01:16:30 +0000

Samuel Greear wrote up a nice summation of Google Code-In progress. 30+ tasks are done now, which is great! Except! We need more projects, as we’re about halfway through the total. Suggestions are welcome, here or on the mailing lists. Recently finished projects include a devattr tool and vkernel usage documentation.

GCI work continues: sysctls

Justin Sherrill — Wed, 08 Dec 2010 02:01:43 +0000

There’s now descriptions for a number of the net.inet.* sysctls, thanks to Taras Klaskovsky as part of Google Code-In.

SHA256 for passwords

Justin Sherrill — Sun, 05 Dec 2010 03:07:11 +0000

Another Google Code-In task completed: passwords are now created using SHA256 (PDF link) by default, and libcrypt also now supports SHA512.

Visual update for bugs

Justin Sherrill — Sun, 05 Dec 2010 03:03:15 +0000

Courtesy of another Google Code-In project, bugs.dragonflybsd.org now matches the main Dragonfly website.

2.8 Installation Video

sjg — Sat, 04 Dec 2010 03:51:49 +0000

Another piece of work by one of the fine students participating in Google Code-In is a new 2.8 installation screencast/video. Check it out at the following link:

DragonFly BSD 2.8 Installation Screencast on YouTube

If you have been following along but have not yet tried DragonFly, this should evidence how easy it is — wait not a second longer!

Google Code-In progress

Justin Sherrill — Fri, 03 Dec 2010 02:00:39 +0000

The Google Code-In projects for DragonFly are bearing fruit, as there’s new pages in the new handbook, plus code commits from various finished projects. 14 tasks are done, and there’s 10 more in progress, out of… I think 50? This is a good rate, considering there’s more than a month left.

Google Code-In results, so far

Justin Sherrill — Sun, 28 Nov 2010 00:51:45 +0000

Several Google Code-In tasks for DragonFly have already been claimed and finished – a regression test and desktop documentation, plus others I haven’t been involved in.

The contest runs through January and is open to anyone 13-18, with Google paying per task. Hopefully we’ll have enough tasks to make it the full time, as it’s more popular than I anticipated.

Google Code-In started!

Justin Sherrill — Tue, 23 Nov 2010 02:20:08 +0000

If you’re between 12 and 18 years of age, Google Code-In has started. There’s plenty of tasks available for DragonFly BSD, so jump in now! (or, well, wait a few days for the holiday if you’re a U.S. resident.)

Last Call for Code-In tasks

Justin Sherrill — Wed, 17 Nov 2010 04:21:34 +0000

If you have any last-minute suggestions for Google Code-In tasks for DragonFly, pass them along now – it starts Monday! Post them here, or in #dragonflybsd on EFNet IRC, or on the kernel@ mailing list. We have 34 already, but you can never have too many.

Google Code-in: us too!

Justin Sherrill — Sat, 06 Nov 2010 00:53:26 +0000

We’re part of Google Code-In! One of 20 organizations, this time.

If you want to contribute something right now, we can always use more Code-In ideas on our project page. (Follow the categories on the Code-In page.) Applications start on Nov. 22nd.

Update: my mailing list post with details.