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On 6/23/19 8:40 AM, Jonas Smedegaard wrote: Is it meaningful to test the SD cards with an USB-adapter? (the MicroSD slot would be occupied by the SD card the machine is running from/on)Testing SD cards on a different controller may help understand _potential_ features of cards, but not _actual_ reachable potentials. If you prefer an analogy: Reading in a magazine that some Formel-1 driver can cut a corner while driving 60km/h in same model car as yours does not mean that you can expect to cut that same corner at that speed: Depends not only on the vehicle (disk device) but also on the driver!
Sure. I have tried to drive the 4 cards along exactly the same
path (i.e. flashbench) to reduce my influence on the performance.
Unfortunately I cannot tell which one is the best from the
resulting data. If the fio benchmark can tell me which card is the best, I will
try it at some point. Of those figures, I consider the random ones more important in most configurations. i.e. if I had to choose between a device that supported a bit higher sequential read/write but much lower random read/write, I'd rather have the random read/write, because that tends to have more impact on interactive usage than sequential.Yes, going back and forth between Thunderbird and Firefox while copying text snippets from one app to the other sometimes ends in a mouse pointer freeze. That's basically what I do most of the time...Biggest speed gain (on a limited computer like Teres-I) is likely had with changing to less ressource hungry tools. Instead of Firefox try GNOME Web (apt install epiphany-browser). It uses the rendering engine "Webkit" so is likely to handle most websites. For an radically lighter browser rendering fewer real-world websites properly and with an arguably less friendly user interface, try Surf.
This is very helpful. I have installed epiphany now. Thanks! A lighter alternative with ok UI and somewhat decent rendering engine is Netsurf, but unfortunately that one won't make it into Debian Buster. Instead of Thunderbird try Balsa or Claws Mail.
OK. Thanks!
SD cards tend to have poor random IO speed so I would never use one for general purpose computing if I could use an HDD or SSD instead.If random IO speed most likely is the real bottle neck, do you know of any particular brand/label/kind/category of MicroSD card that is significantly better than others in that regard?https://github.com/ThomasKaiser/Knowledge/blob/master/articles/A1_and_A2_rated_SD_cards.md (this is perhaps 5th time I share that link with you; 2nd on this list)
Ahh.. there's another hint! For some applications, disk partition
matters? I hope there is no downside to having two browsers installed, as long as you don't use them at the same time! Best regards. //Erik |