This is my 16GB Sandisk Ultra - class 10, not UHS:hominoid wrote: โTue Dec 03, 2019 10:55 amThis is a 32GB SanDisk UltraCode: Select all
hominoid@xu4-lab:~$ uname -a Linux xu4-lab 5.4.0+ #2 SMP Sat Nov 30 23:09:24 EST 2019 armv7l armv7l armv7l GNU/Linux hominoid@xu4-lab:~$ time sh -c "dd if=/dev/zero of=ddfile bs=8k count=250000 && sync"; rm ddfile 250000+0 records in 250000+0 records out 2048000000 bytes (2.0 GB, 1.9 GiB) copied, 93.7846 s, 21.8 MB/s real 1m38.407s user 0m0.437s sys 0m25.387s
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odroid@odroid:~$ time sh -c "dd if=/dev/zero of=ddfile bs=8k count=250000 && sync"; rm ddfile
dd: error writing 'ddfile': No space left on device
151778+0 records in
151777+0 records out
1243361280 bytes (1.2 GB, 1.2 GiB) copied, 750.181 s, 1.7 MB/s
real 12m30.194s
user 0m0.129s
sys 0m12.217s
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odroid@hc1:~$ time sh -c "dd if=/dev/zero of=ddfile bs=8k count=250000 && sync"; rm ddfile
250000+0 records in
250000+0 records out
2048000000 bytes (2.0 GB, 1.9 GiB) copied, 64.5513 s, 31.7 MB/s
real 1m8.663s
user 0m0.214s
sys 0m26.716s