recommended micro sd card ?

[benpope81]

I can't see any tests here that have been run on the Pine64+ 2GB, so here goes: Samsung EVO 64GB (MB-MP64D):

Code:

ubuntu@pine64:~/development$ git clone https://github.com/hglm/flash-bench.git
ubuntu@pine64:~/development$ cd flash-bench/
ubuntu@pine64:~/development/flash-bench$ make
ubuntu@pine64:~/development/flash-bench$ sudo ./flash-bench 
Using test file flash-bench.tmp (using all 512MB).
Benchmark: Sequential read  Limits: Total size: 512MB Duration: 60s
512.0MB processed in 23.64s (21.66MB/s), CPU: user 0.01%, sys 0.99%
Benchmark: Sequential write  Limits: Total size: 512MB Duration: 60s
512.0MB processed in 31.47s (16.27MB/s), CPU: user 0.02%, sys 1.09%
Benchmark: Random read  Limits: Total size: 512MB Duration: 60s
512.0MB processed in 40.83s (12.54MB/s), CPU: user 0.02%, sys 1.17%
Benchmark: Random write  Limits: Total size: 512MB Duration: 60s
512.0MB processed in 52.24s (9.80MB/s), CPU: user 0.01%, sys 0.80%


ubuntu@pine64:~/development$ wget http://www.iozone.org/src/current/iozone3_434.tar
ubuntu@pine64:~/development$ tar xvf iozone3_434.tar
ubuntu@pine64:~/development$ cd iozone3_434/src/current
ubuntu@pine64:~/development$ make linux-arm
ubuntu@pine64:~/development$ sudo iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2
...
Include fsync in write timing
O_DIRECT feature enabled
Auto Mode
File size set to 102400 kB
Record Size 4 kB
Record Size 16 kB
Record Size 512 kB
Record Size 1024 kB
Record Size 16384 kB
Command line used: ./iozone -e -I -a -s 100M -r 4k -r 16k -r 512k -r 1024k -r 16384k -i 0 -i 1 -i 2
Output is in kBytes/sec
Time Resolution = 0.000001 seconds.
Processor cache size set to 1024 kBytes.
Processor cache line size set to 32 bytes.
File stride size set to 17 * record size.
                                                              random    random     bkwd    record    stride                                    
              kB  reclen    write  rewrite    read    reread    read     write     read   rewrite      read   fwrite frewrite    fread  freread
          102400       4     3123     3979     9709     9702     9697     4102                                                                
          102400      16    10940    12180    16150    16149    16167    12121                                                                
          102400     512    21655    21753    23216    23217    23216    21627                                                                
          102400    1024    21814    21794    23199    23202    23203    21834                                                                
          102400   16384    21868    21851    23219    23217    23217    21914