Memory card speed test - maemo.org

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	Rassilon7	2008-11-28 , 11:08
	Posts: 220 \| Thanked: 41 times \| Joined on Oct 2008	#1

Hi

I have been given some memory cards as gifts and wanted to test their speeds, how should I go about doing this?

I looked back through the archives and found this command:

sync; time sh -c "dd if=/dev/zero of=/media/mmc1/testfile bs=1M count=100; sync"

But I keep getting "media/mmc1/testfile No such file of directory" Should I be specifiying a file, or have things changed with OS2008?

Thanks in advance

Steve

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	pycage	2008-11-28 , 11:26
	Posts: 3,404 \| Thanked: 4,474 times \| Joined on Oct 2005 @ Germany	#2

If you have a Linux box, maybe the best way to test is to use

Code:

hdparm -tT /dev/sda

as root. /dev/sda should be replaced by the actual device file.
This will report read and write speeds.

But I keep getting "media/mmc1/testfile No such file of directory" Should I be specifiying a file, or have things changed with OS2008?

Make sure that /media/mmc1 exists and has the card mounted.

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	Rassilon7	2008-11-28 , 11:33
	Posts: 220 \| Thanked: 41 times \| Joined on Oct 2008	#3

I'm on a Mac.

Yes media/mmc1 exists and the card has been mounted.

I'm doing this on the N810 is that correct?

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	pycage	2008-11-28 , 13:07
	Posts: 3,404 \| Thanked: 4,474 times \| Joined on Oct 2005 @ Germany	#4

Code:

sync; time sh -c "dd if=/dev/zero of=/media/mmc1/testfile bs=1M count=100; sync"

This looks correct to me. Maybe you made a typo when trying on your N810?

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	Rassilon7	2008-11-28 , 13:49
	Posts: 220 \| Thanked: 41 times \| Joined on Oct 2008	#5

Ha!

I wasn't logged in as root... Idiot!

Thanks for your help.

Steve

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	ace	2008-11-28 , 14:02
	Posts: 296 \| Thanked: 80 times \| Joined on Dec 2007	#6

Originally Posted by Rassilon7

But I keep getting "media/mmc1/testfile No such file of directory" Should I be specifiying a file, or have things changed with OS2008?

Maybe the memory card had errors and was mounted read-only? Run "mount" and confirm that mmc1 is mounted read-write "rw".

As for OS2008, on my N800, the following command worked for me.

sync && time sh -c "dd if=/dev/zero of=/media/mmc1/test.data bs=1M count=100 && sync && echo success"

I changed the semi-colons to "&&", so that errors in one command stop the next command from being executed.

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	ace	2008-11-28 , 14:07
	Posts: 296 \| Thanked: 80 times \| Joined on Dec 2007	#7

Originally Posted by Rassilon7

I wasn't logged in as root... Idiot!

The normal user should have write permission to the memory cards, I didn't have to run the command as root. Are you using a filesystem on the memory cards other than the typical FAT? What's "mount" say about the memory card?

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	Rassilon7	2008-11-28 , 14:11
	Posts: 220 \| Thanked: 41 times \| Joined on Oct 2008	#8

Well it didn't work before, but now I am root it does.

Either way I got:

Real: 41.86
User: 0.00
Sys: 2.56

It was on an 8 gig Kingston Mini SD, I also tried a 2 gig micro SD and got

Real: 35.58
User 0.00
Sys: 1.60

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	Saturn	2008-11-28 , 21:29
	Posts: 1,648 \| Thanked: 2,122 times \| Joined on Mar 2007 @ UNKLE's Never Never Land	#9

There is also a compiled hdparm if you would like to run it in your tablet.

http://www.internettablettalk.com/fo...69&postcount=1

pycage has given the command to use it above..