2016-02-02, 18:44
Keep in mind that microSD card performance differs based on the platform. My Samsung EVO 16GB Class 10 UHS-1 card has a random read speed ~40% lower on the Pi 2 than a PC. Numbers from my stock Pi 2 are below:
Code:
Creating test file flash-bench.tmp of size 512MB.
Benchmark: Sequential read Limits: Total size: 512MB Duration: 60s
512.0MB processed in 29.48s (17.37MB/s), CPU: user 0.03%, sys 1.40%
Benchmark: Sequential write Limits: Total size: 512MB Duration: 60s
512.0MB processed in 53.83s (9.51MB/s), CPU: user 0.02%, sys 1.35%
Benchmark: Random read Limits: Total size: 512MB Duration: 60s
278.8MB processed in 60.02s (4.64MB/s), CPU: user 0.03%, sys 1.54%
Benchmark: Random write Limits: Total size: 512MB Duration: 60s
171.9MB processed in 154.74s (1.11MB/s), CPU: user 0.00%, sys 0.32%