SANDISK
SDXC 64GB 와 SAMSUNG SDXC 64GB Micro SD 카드 테스트
이미지를 Write하여 부팅까지는 확인 함.
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# cat /sys/kernel/debug/mmc3/ios clock: 50000000 Hz actual clock: 49500000 Hz vdd: 21 (3.3 ~ 3.4 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) signal voltage: 0 (3.30 V) |
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Read속도 : (524 MB) copied, 0.878213 s, 597 MB/s Write 속도 : (419 MB) copied, 32.4127 s, 12.9 MB/s |
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dd if=/dev/zero of=/dev/mmcblk3p1 bs=4096 count=100K 102400+0 records in 102400+0 records out 419430400 bytes (419 MB) copied, 32.4127 s, 12.9 MB/s |
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root@imx6qsabresd:~# dd if=/dev/mmcblk3p1 of=/dev/zero bs=4096 count=100K 102400+0 records in 102400+0 records out 419430400 bytes (419 MB) copied, 0.690988 s, 607 MB/s root@imx6qsabresd:~# dd if=/dev/mmcblk3p1 of=/dev/zero bs=4096 count=200K 128000+0 records in 128000+0 records out 524288000 bytes (524 MB) copied, 0.878213 s, 597 MB/s |
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