Toshiba SD-C16GJ(6A man:0x000002 oem:0x544d name:SA16G hwrev:0x1 fwrev:0x4 https://github.com/hglm/flash-bench pi@raspberrypi ~/flash-bench $ sudo ./flash-bench Creating test file flash-bench.tmp of size 512MB. Benchmark: Sequential read Limits: Total size: 512MB Duration: 60s 512.0MB processed in 30.44s (16.82MB/s), CPU: user 0.08%, sys 1.88% Benchmark: Sequential write Limits: Total size: 512MB Duration: 60s 406.8MB processed in 88.92s (4.57MB/s), CPU: user 0.02%, sys 0.93% Benchmark: Random read Limits: Total size: 512MB Duration: 60s 267.6MB processed in 60.04s (4.46MB/s), CPU: user 0.02%, sys 2.58% Benchmark: Random write Limits: Total size: 512MB Duration: 60s 198.0MB processed in 254.00s (0.78MB/s), CPU: user 0.00%, sys 0.17% pi@raspberrypi ~/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 30.34s (16.88MB/s), CPU: user 0.10%, sys 1.92% Benchmark: Sequential write Limits: Total size: 512MB Duration: 60s 415.1MB processed in 94.50s (4.39MB/s), CPU: user 0.02%, sys 0.66% Benchmark: Random read Limits: Total size: 512MB Duration: 60s 262.0MB processed in 60.04s (4.36MB/s), CPU: user 0.05%, sys 2.56% Benchmark: Random write Limits: Total size: 512MB Duration: 60s 199.3MB processed in 256.63s (0.78MB/s), CPU: user 0.00%, sys 0.17% pi@raspberrypi ~/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 30.24s (16.93MB/s), CPU: user 0.05%, sys 1.92% Benchmark: Sequential write Limits: Total size: 512MB Duration: 60s 414.2MB processed in 91.87s (4.51MB/s), CPU: user 0.02%, sys 0.75% Benchmark: Random read Limits: Total size: 512MB Duration: 60s 267.1MB processed in 60.05s (4.45MB/s), CPU: user 0.07%, sys 2.11% Benchmark: Random write Limits: Total size: 512MB Duration: 60s 195.5MB processed in 254.44s (0.77MB/s), CPU: user 0.00%, sys 0.17%