Turl changed the topic of #linux-sunxi to: Allwinner/sunxi /development discussion - did you try looking at our wiki? https://linux-sunxi.org - Don't ask to ask. Just ask and wait! - https://github.com/linux-sunxi/ - Logs at http://irclog.whitequark.org/linux-sunxi
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<ullbeking> i'm doing some late nite shopping for a few micro-SD cards for my small range of OPis
<ullbeking> any brands or models recommended in particular? does it make a difference on an OPi?
<ullbeking> i'm browsing through aliexpress. are these memory cards legit?
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<lurchi_> ullbeking: I don't think you can save money when buying SDs from Aliexpress
<lurchi_> try to get some voucher or some specials for a normal vendor
<ullbeking> lurchi_: yeah, i tend to agree
<lurchi_> can -> can not
<lurchi_> sorry, getting confused, "I think you can not save money!" ...
<ullbeking> :D what's the difference between microSDXC and microSDHC when it comes to OPi?
<ullbeking> i get what you mean :-)
<lurchi_> ;-)
<lurchi_> All > 32G has to be SDXC (addressing)
<ullbeking> it says "form factor" on the sandisk website, so i thought the casings or connectors were differently shaped, physically
<lurchi_> Have different cards, Samsung Evo+, Sandisk, no issues so far
<lurchi_> all micros should be fine
<ullbeking> do you notice much difference in them? are the expensive ones noticeably better?
<ullbeking> somebody said sandisk industrial was very good
<lurchi_> don't buy the cheapest ones, but no need for UHS-II
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<lurchi_> Have a look at Amazon, people are doing some basic benchmarks in the reviews
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<ullbeking> is "class 10" a reasonable attribute to look for?
<MoeIcenowy> in fact I think current OPis even cannot make use of UHS-I
<lurchi_> MoeIcenowy: UHS-1 interface speed of course is not supported, but you will get likely higher IOPS/s
<MoeIcenowy> yes...
<lurchi_> ullbeking: class 10 is bare minimum, but that includes slow cards with shitty random access
<MoeIcenowy> and class 4 is a disaster
<MoeIcenowy> do not buy class 4 cards in 2017.
<lurchi_> Reasonable cards go for 25..30€ for 64GB
<ullbeking> 64 GB is pretty big for a cheap OPi Zero, for example
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<ullbeking> or is it still worth it?
<ullbeking> i bought these OPis so I could flash BIOSes
<ullbeking> then i decided to do other experiments with them
<ullbeking> firewalls, etc
<lurchi_> a) a reasonable 32GB card is not much cheaper b) the 64G card is faster
<ullbeking> ok cool
<ullbeking> also, on a related note...
<ullbeking> i want to buy a cheap arduino kit, particularly for the parts
<ullbeking> do you know anything about these or have a recommendation?
<ullbeking> (it was recommended to me here that i get the arduino kit)
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<lurchi_> ullbeking: what do you mean? sensors kit? baseboard?
<ullbeking> no idea
<ullbeking> i don't know anything about arduinos. just that someobody said get a kit for the parts, as they'll be useful for OPi experiments
<ullbeking> if the question makes no sense, please ignore
<lurchi_> so, probably sensors kit ...
<lurchi_> these typically go for ~40€ for 40 sensors and like, e.g. proxity, light, buttons, ...
<ullbeking> sounds interesting...
<lurchi_> if you just need a few of these, you are better off when you just buy the ones you really need
<lurchi_> most ones you can buy individually on ebay, ali, ...
<lurchi_> if you just want to play, get a breadboard, jumper wires, and the sensors and stuff you are interested in
<ullbeking> lurchi_, thank you for all the great advice. this is fabulous.
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<KotCzarny> ullbeking: 1/ class X doesnt mean anything (unless you choose class A1 or A2)
<KotCzarny> 2/ you want high random 4k r/w iops, sequential speed comes second
<KotCzarny> 3/ samsung evo+/pro+ are recommended
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<KotCzarny> 4/ there are thorough discussions about that topic on armbian forums
<ullbeking> KotCzarny: re: 4/, so it's a perpetual topic of discussion over there, then? ;-)
<KotCzarny> yup
<ullbeking> thanks for this advice
<KotCzarny> one of the few topics that come as a boomerang
<ullbeking> i can imagine
<KotCzarny> powering and heat being others
<ullbeking> probably one topic of discussion is value, i.e., the storage is far more expensive than the device itself, for example...?
<KotCzarny> yes
<KotCzarny> :)
<ullbeking> mmm
<ullbeking> that's what got me thinking in the first place
<ullbeking> that
<KotCzarny> but what can you expect for ~10usd boards?
<ullbeking> and the fact that i wasn't sure if the aliexpress vendors were selling legit tf cards
<KotCzarny> yup. better to buy local and return if card is fishy
<ullbeking> KotCzarny: well, i'm pretty excited to get mine working finally and see what it's capable of
<ullbeking> ooh, yeah i just checked my usual vendor of memory cards. the pro plus series is significantly more expensive than the evo plus, but otherwise evo plus is looking good
<ullbeking> 64 GB for £25, not too bad
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<ullbeking> KotCzarny: why don't you like the #orangepi channel?
<KotCzarny> too offtopic
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<fixmer> hi!
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<KotCzarny> heh
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<kilobyte> ullbeking: unless you use your OPis with no other machines nearby, it's far better to give them only minimal SD cards and put everything but the system on NBD
<kilobyte> ullbeking: drastically faster with GbE, adequate with 100E/WiFi
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<pmpp> kilobyte: +1 good over usb too, but aoe is faster than nbd because no tcp payload
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<kilobyte> pmpp: never used it, but is the tcp overhead even non-theoretical in real usage?
<pmpp> nbd has to go trough all network stack, while aoe is at ethernet frame layer
<pmpp> non routable but way faster
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<kilobyte> tcp is pretty optimized (zero-copy most of the time), and ethernet frame only means it doesn't work in any setup but directly attached link unless you muck with bridging (or tunnel it inside a higher-level protocol :p)
<kilobyte> lemme test it, though -- need to recompile the kernel with AOE first
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<pmpp> kilobyte: any chance you know any standalone nbd server for win32 that can run userspace ?
<kilobyte> pmpp: sorry, no idea. Teh googles say https://github.com/jeffbryner/NBDServer but I've never used that (nor do I have a working install of Windows outside a VM...).
<pmpp> that is worth a try thx for the link , i was searching with no luck in qemu ports
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<jmcneill> Hi! Has anybody ever tried booting a Pine64 (or any A64 for that matter) with a 32-bit kernel?
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