W. H. Heydt wrote: ↑Thu Mar 15, 2018 4:41 pm
I would look on a pre-loaded card as a convenient, but not necessarily inexpensive, way to get an extra SD card and immediately re-flash it with a current image.
Unfortunately all those 'pre-loaded' things are old and insanely slow SD cards being often 100 times slower than any recent and good A1 rated card. Talking of course about random IO performance with small block sizes here (IOPS). That's entirely what 'storage usage with Linux on SBC' defines, sequential performance (MB/s) is close to irrelevant.
Unfortunately the majority of SBC users is not aware of this, buys slow or even crappy cards and then suffers from sluggish board behaviour. Cards of the same speed class (irrelevant sequential performance, e.g. 'Class 10') can differ by factor 10 or even 100 when it's about the important random IO performance.
See Jeff Geerling's pioneer work on this 'issue':
https://www.jeffgeerling.com/blogs/jeff ... crosd-card
See this 2018 update testing especially those new and insanely fast A1 cards:
https://forum.armbian.com/topic/954-sd- ... ment-49811
Switching from an average SD card to such an ultra fast one is comparable to replacing a HDD in a PC with an SSD. Since random IO performance matters!
