Test your nand and sd card speed

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paolo-red1

Senior Member
Jun 29, 2011
671
263
36
Somewhere in the middle of Italy
Please do this test:

write in terminal emulator, not also (...):

(Write file 64MB (8k * 8192) bigger file is better)

busybox dd if=/dev/zero of=/data/out.img bs=8000 count=8192

(Read)

busybox dd of=/dev/null if=/data/out.img bs=8000

(to Remove out.img)

rm /data/out.img


If you don't have int2sd and let /data the phone writes in nand.
If you change / data in /sdcard or /sd-ext you can test your sd-card speed.

Report in this thread your results.
If the test is positive we can ask to our developer to try to include this NativeSD script in roms.
http://xdaforums.com/showthread.php?t=1869673



Edit: use androbench from market and try both /data and /system.
(I read this information from N1 jb evervolv thread)
 
Last edited:
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gie62001

Senior Member
Jan 21, 2011
364
123
London
Google Pixel 6 Pro
a/local/bin:$PATH <
u0_a53@android:/ $ su
ev/zero of=/data/out.img bs=8000 count=8192 <
dd: writing '/data/out.img': No space left on device
4004+0 records in
4002+1 records out
32022528 bytes (30.5MB) copied, 30.591187 seconds, 1022.3KB/s
dev/null if=/data/out.img bs=8000 <
4002+1 records in
4002+1 records out
32022528 bytes (30.5MB) copied, 0.244355 seconds, 125.0MB/s
u0_a53@android:/ # rm /data/out.img
u0_a53@android:/ #

That's for nand.

Using nikez jb p0.9 with a2sd y/n/y.
Hope this helps as I ran out of space during the test ;)


Below for sdcard . Using class 10 16GB Kingston (tested r/w speeds on PC they are of class 10).

a/local/bin:$PATH <
u0_a53@android:/ $ su
ev/zero of=/sd-ext/out.img bs=8000 count=8192 <
8192+0 records in
8192+0 records out
65536000 bytes (62.5MB) copied, 5.494354 seconds, 11.4MB/s
ev/zero of=/sd-ext/out.img bs=8000 count=8192 <
8192+0 records in
8192+0 records out
65536000 bytes (62.5MB) copied, 2.478820 seconds, 25.2MB/s
u0_a53@android:/ # rm /sd-ext/out.img
u0_a53@android:/ #
 
Last edited:

handy5876

Senior Member
Mar 10, 2011
212
51
Hyderabad
thinksparks.com
# busybox dd if=/dev/zero of=/data/out.img bs=8000 count=8192
busybox dd if=/dev/zero of=/data/out.img bs=8000 count=8192
8192+0 records in
8192+0 records out
65536000 bytes (62.5MB) copied, 18.992340 seconds, 3.3MB/s
# busybox dd of=/dev/null if=/data/out.img bs=8000
busybox dd of=/dev/null if=/data/out.img bs=8000
8192+0 records in
8192+0 records out
65536000 bytes (62.5MB) copied, 0.258057 seconds, 242.2MB/s

This was for NAND

---------- Post added at 10:33 AM ---------- Previous post was at 10:28 AM ----------

# busybox dd if=/dev/zero of=/sd-ext/out.img bs=8000 count=8192
busybox dd if=/dev/zero of=/sd-ext/out.img bs=8000 count=8192
8192+0 records in
8192+0 records out
65536000 bytes (62.5MB) copied, 0.590332 seconds, 105.9MB/s What ??
# busybox dd of=/dev/null if=/sd-ext/out.img bs=8000
busybox dd of=/dev/null if=/sd-ext/out.img bs=8000
8192+0 records in
8192+0 records out
65536000 bytes (62.5MB) copied, 0.256714 seconds, 243.5MB/s
# rm /sd-ext/out.img
rm /sd-ext/out.img

This was for sdcard
My class 4 sdcard is faster than NAND ????
 
Last edited:

gie62001

Senior Member
Jan 21, 2011
364
123
London
Google Pixel 6 Pro
Is nobody else interested in this to at least see how it works? Or it makes no sense on our desires.
I'm just wondering if our nands are faster than class 6/10 SD cards.

Sent from my HTC Desire using xda app-developers app
 

paolo-red1

Senior Member
Jun 29, 2011
671
263
36
Somewhere in the middle of Italy
yes, this script test reports false results, it is better to use the app: ANDROBENCH.
you can try both sdcard and internal. When I will have time to try new Nikez's release (or another non-int2sd rom) I will write my results.
 

gie62001

Senior Member
Jan 21, 2011
364
123
London
Google Pixel 6 Pro
Unfortunately androbench crashes without completing the test. Will try to reinstall or fix permissions maybe that will help. I'm on nikez jb p0.9

Sent from my HTC Desire using xda app-developers app
 

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    Please do this test:

    write in terminal emulator, not also (...):

    (Write file 64MB (8k * 8192) bigger file is better)

    busybox dd if=/dev/zero of=/data/out.img bs=8000 count=8192

    (Read)

    busybox dd of=/dev/null if=/data/out.img bs=8000

    (to Remove out.img)

    rm /data/out.img


    If you don't have int2sd and let /data the phone writes in nand.
    If you change / data in /sdcard or /sd-ext you can test your sd-card speed.

    Report in this thread your results.
    If the test is positive we can ask to our developer to try to include this NativeSD script in roms.
    http://xdaforums.com/showthread.php?t=1869673



    Edit: use androbench from market and try both /data and /system.
    (I read this information from N1 jb evervolv thread)