Monday, 09 January 2012
Back in September, I wrote about the machines that I set up to help bootstrap the new armhf port in Debian. Basing on Konstantinos' huge efforts in bringing up the new "architecture" in debian-ports, we started importing armhf into the main Debian archive on the 24th of November. Since then, those builders have been churning away night and day to build the huge collection of software that makes up the Debian archive. The current state can be seen on the armhf buildd status page, and there's a nice graph showing how quickly we've managed to run from 0 to over 90% of the archive here. (Click on the image for a larger version, or visit https://buildd.debian.org/stats/ for other versions. We overtook hurd-i386 quickly and are now ahead of the kfreebsd-* architectures.
We've recently brought 3 more similar build machines online (hildegard, howells and hummel), again sponsored by the nice folks at Linaro but now hosted at the York NeuroImaging Centre at the University of York. This gives us both more build horsepower to keep up with building more different bits of Debian (experimental, updates etc.) and more redundancy in case of problems.
We now have the vast majority of the archive built, and now a number of us are concentrating on fixing the remaining issues: language bootstraps and bugs. Also, on the 7th of January we were just added into testing, the next step on our path for inclusion as a Debian release architecture.
Setting up the machines
A lot of people have been asking me about the physical setup I showed in my last blog about these machines, so here's more details for those who are interested.
Mount the 6 boards into the mini-rack, connect up the Molex power connectors to each board, attach ethernet cables and turn it all on! Each board comes with a micro-SD card containing uboot and an Ubuntu installation. I've configured uboot to boot off the hard drive directly, but leaving configuration available to use the Ubuntu on the micro-SD as a simple rescue system should the need arise.
The Quickstart boards are not ideal physically for two reasons: the lack of SATA power, plus you need to push a power button on each board to boot it - they don't boot automatically the moment power is applied. However, they're quite inexpensive little machines and have done a great job of building the Debian archive so far! The ideal machines for us would also include more RAM at this point. CPU on these is adequate, but the larger C++ packages (yay webkit!) use a huge amount of memory at link time. Linking in swap is not the best thing, performance-wise... :-(
UPDATE 2012-01-12: Ian tells me that the newer Quickstart-R boards apparently have a different power controller; these now boot up straight away without needing you to push a button. That sounds useful.