On Wednesday 09 May 2012, Arnd Bergmann wrote:
> On Tuesday 08 May 2012, Michael Hudson-Doyle wrote:
> We also know that Samsung has caught up recently and is now making
> excellent controllers even for their "essential" series cards --
> these behave much better than anything else I've tested before
> (except eMMC and actual SSD drives).
A quick follow-up on this:
I've found another sample of 8GB Samsung "Essential" microSDHC from 2011. This
one was
rather bad, in fact worse than the 4GB one that I had tested before.
The samples I have for samsung are now
4 GB microSDHC "Essential", MB-MS4GA, manf. 11/2011 => rather bad
8 GB microSDHC "Essential", MB-MS8GA, manf. 11/2011 => rather bad, worse or
same as 4GB
8 GB SDHC "Plus" Class 10, MB-SP84GA, manf 6/2011 => pretty good, better than
most
8 GB microSDHC "Plus" Class 10 MB-MP8GA, identical to SDHC model
32 GB microSDHC "Essential" Class 10 MB-MSBGA, three samples, manf 12/2011 and
1/2012, best cards ever
I can always need more samples. If anyone has Samsung cards at hand, could you
send the output of "tail -n 100 /sys/block/mmcblk0/device/* /proc/partitions"?
I would definitely recommend the Samsung "Plus" models now for 8GB, and the
"Essential" 32 GB model, but there is no sample for the 16 GB model yet.
If you have a 16GB "Essential" card, I'd love to see the output of
"flashbench --open-au /dev/mmcblk0 --open-au-nr=2 --blocksize=3072
--erasesize=$[6*1024*1024]" and "flashbench --open-au /dev/mmcblk0
--open-au-nr=30". WARNING: that test overwrites data on the card.
Arnd
_______________________________________________
linaro-dev mailing list
linaro-dev@lists.linaro.org
http://lists.linaro.org/mailman/listinfo/linaro-dev
