Cubietruck performance testing notes

Write performance (one large file)

SATA appears to be best for writing large files, then SD, then NAND (with pretty big differences between each one!):

# SATA
root@testnode:~# time dd if=/dev/zero of=/usr/local/tunapanda/data/1G bs=1G count=1
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 40.2311 s, 26.7 MB/s

real    0m41.104s
user    0m0.000s
sys     0m14.086s

# SD card
root@testnode:~# time dd if=/dev/zero of=/tmp/1G bs=1G count=1 
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 93.8171 s, 11.4 MB/s

real    1m34.353s
user    0m0.003s
sys     0m16.041s

# NAND nvram
root@testnode:~# time dd if=/dev/zero of=/mnt/nand2/1G bs=1G count=1
1+0 records in
1+0 records out
1073741824 bytes (1.1 GB) copied, 170.28 s, 6.3 MB/s

real    2m50.858s
user    0m0.000s
sys     0m19.805s