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Are there any SD Card diagnostic utility programs out there for Ubuntu? I would like to run tests on my SD card to check capacity, write speed etc. I have one for windows but I am looking for a Linux flavor and hope to find some source code.

landroni
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Eae
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4 Answers4

17

Look for Disk Utility on you dash (as an option press Alt+F2 and type palimpsest)

enter image description here

Click on the disk you want information from, to test it click on Benchmark

enter image description here

To start benchmark, select Read only or Read/Write benchmark

enter image description here

Bruno Pereira
  • 74,785
16

For Ubuntu 13.04 and later...

From the dash

Find <code>disks</code> in the launcher

From the command line

gnome-disks

Usage

Select the disk you wish to test. enter image description here Find the menu in the top right and select Benchmark...

enter image description here

A window will appear. Click Start Benchmark... to see: enter image description here

I left the defaults and clicked Start Benchmarking.... It will run for a while, building the chart over time. enter image description here You can see that my new SD card's read rate is around 7 MB/s, while the write rate is only slightly over 2 MB/s.

The model shown here is a SanDisk Ultra SDXC with an advertised speed of up to 30 MB/s. As you can see, the transfer rate is not as advertised.

Community
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Drew Noakes
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7

Reported Capacity

$ df -h /media/sdcard

Real capacity and write speed

$ dd if=/dev/zero of=/media/sdcard/testfile bs=10M
1xx+0 records in 1xx+0 records out 9xx bytes (9.4 GiB) copied, 34.xx seconds, 271 MB/s

dd will fill up all the space. Remove the testfile afterwards.

Rael Gugelmin Cunha
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cweiske
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6

There is also f3 (Repository, doc), that specifically aims at detecting fraudulent cards (f3 stands for "fight flash fraud").

It was suggested here first.

MayeulC
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