Build on
 OpenBSD 6.0-beta (GENERIC) #276: Sat Jul  9 12:44:52 AEST 2016

Ports tree
 2016-07-16

Build cluster
 - two Beaglebone Black Rev. A6 (2GB eMMC, 512MB RAM, 1-8GB SD-card)
 - two USB-to-UART (only for debug)
 - 5-port switch
 - WLAN access point
 - USB hub (only for power distribution)
 - 5V, 2.5A power brick

Notes
 As of right now building packages is done manually on very limted
 hardware. Packages are hand picked, the hardware is carefully
 massaged to stay working. One Beagle already lost the capability
 to boot from eMMC. One sd-card reports i/o errors above 4GB, so 
 50% less space. Internet connectivity is only on, when my main
 workstation is running. And uplading to this website is also done
 by hand. Sooo Yeahhh... fun times.

Update 2016-08-05
 Now building with a kernel that includes the pmap
 uvm_fault patch. 

Update 2016-08-06
 Upgrading to two 64GB SD-cards. Way less handholding required.

Update 2016-08-07
 Now building with a kernel that includes the page table
 in cacheable memory patch.

Update 2016-08-08
 New kernel with "remove most of the cache cleaning and
 invalidation from the pmap" and "non-cachable memory as
 cachable and subsequently changing the mapping to non-cachable
 is retarded" patches. All those pmap patches reduce the kernel
 build time by about 50%.

Update 2016-09-04
 Switched to dpb build, but still building independently
 on both Beagles.
 5090 Packages build so far.

Update 2016-09-11
 5800 Packages build.

Update 2016-09-28
 6440 Packages build.

Update 2016-10-15
 6800 Packages build.

Update 2016-10-25
 Stoping this experiment.
 Final pkg count 6863.