Thread: SDHC kernel updated - mk3
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fanoush is offline fanoush
2007-03-12 , 12:53
Posts: 2,152 | Thanked: 1,490 times | Joined on Jan 2006 @ Czech Republic
#2
Anyone with Transcend 150x 4GB (non-SDHC one) could post clock debug log from this SDHC kernel and also test the speed like this (two times, post the second/slower one)?

Code:
Nokia-N800-51:~# time dd if=/dev/mmcblk1 of=/dev/null bs=8192 count=30000
I've got older 80x transcend 1GB which does run in high-speed SD mode (i.e. 48MHz) but still the read speed is ~7MB/s. I wonder whether the 150x one could be better (it should).

The kingston 2GB mmcmobile is my best card so far, it runs at 48Mhz over 4bits and read speed in N800 is 12MB/s, which is great. Can the 4GB 150x one match or exceed this?

Code:
Nokia-N800-51:~# time dd if=/dev/mmcblk1 of=/dev/null bs=8192 count=30000
30000+0 records in
30000+0 records out
real    0m 18.76s
user    0m 0.03s
sys     0m 3.07s
Nokia-N800-51:~#
240MB in 19 seconds =~ 12.5 MB/s