https://things.bleu255.com/runyourown/index.php?action=history&feed=atom&title=Flash_Card_Testing 2026-05-11T14:20:39Z Revision history for this page on the wiki MediaWiki 1.43.8 https://things.bleu255.com/runyourown/index.php?title=Flash_Card_Testing&diff=415&oldid=prev 2020-03-06T17:37:12Z

<p></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:37, 6 March 2020</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Some oneliners to test flash card <del style="font-weight: bold; text-decoration: none;">devives </del>such as SD Cards.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Some oneliners to test flash card <ins style="font-weight: bold; text-decoration: none;">devices </ins>such as SD Cards.</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Testing cards with f3 ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Testing cards with f3 ==</div></td></tr> <!-- diff cache key db_runyourown:diff:1.41:old-412:rev-415:php=table --> </table>

320x200 https://things.bleu255.com/runyourown/index.php?title=Flash_Card_Testing&diff=412&oldid=prev 2020-03-06T17:34:12Z

<p>Created page with &quot;Some oneliners to test flash card devives such as SD Cards. == Testing cards with f3 == &#039;&#039;&#039;Note:&#039;&#039;&#039; These are just handy oneliners, it might be a good idea to [https://fight-...&quot;</p> <p><b>New page</b></p><div>Some oneliners to test flash card devives such as SD Cards.<br /> <br /> == Testing cards with f3 ==<br /> &#039;&#039;&#039;Note:&#039;&#039;&#039; These are just handy oneliners, it might be a good idea to [https://fight-flash-fraud.readthedocs.io read the documentation] at least once if you never used f3 before. <br /> * Installation:<br /> sudo apt install f3<br /> * Capacity test:<br /> sudo f3probe --destructive --time-ops /dev/sdx<br /> * Performance and file corruption test:<br /> sudo mount -o user,uid=someuser,gid=someuser /dev/sdx1 /some/where<br /> f3write /media/stuff<br /> f3read /media/stuff<br /> <br /> == Speed benchmarking with IOzone ==<br /> &#039;&#039;&#039;Note:&#039;&#039;&#039; speed benchmarking depends on a lot of factors, not just the card itself. For instance, different SD Card USB adapters can be several times faster or slower than others with the same SD card. So for most accurate result and/or testing different settings, best is to run &lt;code&gt;iozone&lt;/code&gt; on the final hardware where the card will be used, if possible.<br /> * Installation:<br /> sudo apt install iozone3<br /> * Run a test on 100MB big file with chunks of 4K, 512K, and 16M length. Depending on the usage you might be more interested in one or other result. For an active system partition or a storage with lots of small files, 4K read/write, both sequential and random are the important values to look at.<br /> iozone -e -I -a -s 100M -r 4k -r 512k -r 16M -i 0 -i 1 -i 2 -f /some/where/100M<br /> <br /> <br /> [[Category: Raspberry Pi]]<br /> [[Category: Storage]]</div>

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