Times to build just devel/llvm50 via poudriere-devel: Pine64+ 2GB, RPi3, RPi2 V1.1

[Andreas Schwarz]

On 04.01.18, Mark Millard wrote:

> eMCC performance notes:
> The rpi3 can get between 10 MiByte/s and
> 12 MiByte/s, while the Pine64+ 2GB can get
> between 5 MiBytes/s and 6 MiBytes/s, from
> what I have observed.

Unfortunatly the DiskIO (to SD Card) of the Pine64 is very slow 
in comparsion to RPI2B (or RPI3).

root at rpi2b:~ # dd if=/dev/zero of=/var/zero.img bs=1m count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 80.823823 secs (13284967 bytes/sec)

root at pine64plus:~ # dd if=/dev/zero of=/var/zero.img bs=1m count=1024
1024+0 records in
1024+0 records out
1073741824 bytes transferred in 383.600722 secs (2799113 bytes/sec)

Both devices running r327391 with without any debugging, INVARIANTS, 
etc.. Used SD Cards: Samsung MB-MGBGB SDHC 32GB

Mark, can you perform the write test with your eMMC to MicroSD 
Adapter?

-asc