On Monday 11 June 2012, David Brown wrote:
> 4MB variant:
> == 2 ==
> 4MiB 4.05M/s
> 2MiB 6.13M/s
> 1MiB 6.19M/s
> 512KiB 6.14M/s
> 256KiB 5.27M/s
> 128KiB 4.59M/s
> 64KiB 6M/s
> 32KiB 5.04M/s
> 16KiB 490K/s
> == 3 ==
> 4MiB 5.06M/s
> 2MiB 3.93M/s
> 1MiB 1.72M/s
> 512KiB 1.51M/s
> 256KiB 449K/s
> 128KiB 206K/s
> 64KiB 1.2M/s
> 32KiB 1.23M/s
> 16KiB 1.66M/s
> == 30 ==
> 4MiB 6.66M/s
> 2MiB 3.29M/s
> 1MiB 1.64M/s
> 512KiB 821K/s
> 256KiB 408K/s
> 128KiB 204K/s
> 64KiB 104K/s
> 32KiB 149K/s
> 16KiB 660K/s
Ok, thank you very much!
This confirms that it is the same as my 8 GB essential card, and I would
not recommend using this kind of card in production systems with an ext4
or similar file system.
>From what I can tell, all the good Samsung cards are marked "Made in
Korea" while all the bad ones are "Made in Taiwan". I would not treat
this as 100% reliable information as those things tend to change over
time, but it's certainly a good indication.
Arnd
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