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pawl/sd_card.txt

Created Dec 6, 2020
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samsung evo+ sd card vs samsung bar usb 3.1 flash drive write performance on raspberry pi 4
# samsung evo+ sd card
pi@raspberrypi:~ $ dd if=/dev/zero of=/home/pi/test bs=8k count=50k conv=fsync; rm -f /home/pi/test
51200+0 records in
51200+0 records out
419430400 bytes (419 MB, 400 MiB) copied, 17.0585 s, 24.6 MB/s
pi@raspberrypi:~ $ dd if=/dev/zero of=/home/pi/test bs=8k count=50k conv=fsync; rm -f /home/pi/test
51200+0 records in
51200+0 records out
419430400 bytes (419 MB, 400 MiB) copied, 13.8276 s, 30.3 MB/s
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