<davidebeatrici>
mripard: I'm available for testing if you need someone with an H3.
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<wens>
libv: btw, full rgb capture + hdmi decoder sounds useful for automated tests
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<plaes>
basic chamelium board
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<libv>
wens: we will count ourselves lucky if we can hit 1280x720@60
<libv>
the bandwidth limit given for csi1 is not consistent
<libv>
sometimes it is full 1080p, sometimes it is 1920x1080@30Hz
<libv>
it is not clear which of those limits apply to, for instance, full 24bit rgb
<libv>
but, if 24bit rgb works at 1920x1080@30Hz, and some reduced bitdepth mode works at 1920x1080@60Hz, then it should work for 1280x720@60Hz if there is no trickery going on
<libv>
and 720p is good enough for slides and for the cameras we rent
<wens>
maybe displaying at the same time (and encoding) cuts into the overall bandwidth available?
<libv>
i calculated the bus bandwidth
<libv>
we're half of what ssvb his tool has proven and which is on the wiki
<libv>
almost exactly half
<libv>
and
<libv>
we need the blitter to go from rgb to yuv for the encoder, and we will only encode half the framerate
<libv>
but we want full rate hdmi output
<libv>
if we cannot have it, fine, then we go half
<libv>
but we definitely _need_ full rate capture
<libv>
as speakers laptops will all support that
<libv>
if we announce 30Hz in EDID, then there will be 2-300 laptops which will not accept that
<libv>
and we see 750+ laptops on the weekend
<libv>
we've been through that :)
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<libv>
basically, full rate capture, being piped to a small overlay on the 3.5" lcd, and being properly scaled for the projector on hdmi or vga
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<libv>
then half rate blit with colour space conversion, and then h264 encode, and then off on the ssd and over the network
<libv>
so a20 is currently perfect for our needs
<libv>
and it of course has the best software support
<libv>
as we already will have enough pain
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<libv>
there were also some people talking about vp8/9 or av1 for the encoder
<libv>
but that's all pointless, as this is a local storage and network encode, there are intel laptops set up to do the streaming transcode, and there are servers which do the final transcode
<libv>
(the laptops are cheap refurbished laptops, all 12" thinkpads, i think we were on sandy bridge this year, they get bought each year, and sold on, fosdem buys like 50 or so of them, and they don't lose a cent on them)
<libv>
and there are like 28 sitting on metal ikea stands under the K building
<libv>
one machine per stream
<libv>
and the servers are machines from the core organizers, or the companies the core organizers work for, sitting wherever in the world
<wens>
2 more transcodes huh
<libv>
well, the uplink and other network infrastructure from the new building was paid for by fosdem
<libv>
but there are buildings there from the 60s and 70s
<libv>
and there are 12k+ visitors with laptops and cellphones
<libv>
so we need to be able to send this over the network encoded already
<wens>
wait, wha? # infrastructure from the new building was paid for by fosdem
<libv>
the extra transcode formats are all going to be changing over time, depending on $format_of_the_day
<libv>
yeah
<libv>
wasn't that bad
<libv>
not that big a building as well
<libv>
fosdem has some money
<libv>
a 30th of, for instance, CCC
<wens>
(no idea what that is
<libv>
and they pay a yearly fee for renting the whole site, which is like 1/100th of what CCC pays for their site
<libv>
chaos computer congress
<wens>
which building in ULB is the new one?
<wens>
K? AW?
<libv>
K
<libv>
aw is very much 70s, insane layout, floaty staircases and single pane glass
<libv>
hr, even 60s
<libv>
H is 70s brutalism
<libv>
and U is a concrete maze which makes no sense
<libv>
we should map it into a few quake levels
<libv>
U is a pain to wire up for video
<libv>
and paulk and i wasted several hours there this year, and we only got to set up the power strips in our devroom after we were done, and we ended up being locked in, as everyone else had already left
<wens>
I think I remember U from the year I was there
<wens>
there was a fire alarm or something and everybody got locked in :/
<libv>
when were you there?
<wens>
2015
<libv>
i never heard that story :)
<libv>
how easy was it to find the devroom you wanted?
<libv>
at what time, approximately, did this fire alarm thing happen?
<wens>
be happy you didn't, we were stuck inside for 10~15 minutes :)
<wens>
I can't remember, sorry
<wens>
as for the devrooms, I think it was quite easy to find, though running around myself, I mostly end up not being able to get in
<libv>
yeah, the streaming is pretty solid these days
<libv>
and it takes off the pressure from getting in
<libv>
people who do not get in can be seen watching the stream just outside
<libv>
but fosdem has been slowly growing, and room sizes do not automatically grow with it
<libv>
all we can do is more rooms
<libv>
but that still means that people flock to specific talks
<wens>
it happens
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<wens>
bbl
<libv>
but now that we have the K building, things have massively improved
<libv>
K was first used in 2012 i think
<libv>
before that the hallway in H was just murder
<libv>
as it used to be full of stands
<libv>
and many thousands mulling around
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<ynezz>
Hi, just looking at one sunxi related PR https://github.com/openwrt/openwrt/pull/1702/commits/4ce1b174fae95d84d97be6b5c549ba2d4dfdc067 and from my point of view it should be probably rejected as this additional USB ports on Orange PI Zero are probably only accessible via the 26pin expansions connector, where the pins could be configured for other purposes as well, thus this patch isn't generic and use
<ynezz>
case specific, right?
<plaes>
yes, enable via dt overlay, if possible
<ynezz>
ok, thanks
<wigyori>
hey ynezz
<ynezz>
wigyori: hi!
<karlp>
even just a second dts file if it's a comonly sold readily available baseboard people use.
<MoeIcenowy>
karlp: no
<MoeIcenowy>
baseboard dts only if the core board cannot be directly used by the user
<MoeIcenowy>
or it‘s needed to solder the core board on the baseboard
<MoeIcenowy>
1st situation example is SoPine Baseboard model A, because SoPine has only goldfinger
<MoeIcenowy>
2nd example is Lichee Pi Zero dock, it connects to Lichee Pi Zero via soldering LPi0 on it
<karlp>
is there a statement on that from upstream?
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<karlp>
sounds kinda wrong headed.
<karlp>
if I'm selling a product that is a basebaord, I don't see why it should be an overlay rather than a new dts+dtsi for the core module.
<karlp>
there seems to be existing dts(i) files in this stuyle uðstream last time I looked, even if not prevalent.
<MoeIcenowy>
karlp: it's usually required by mripard
<MoeIcenowy>
I think he wants a DTS to only specify peripherals that removable by soldering iron
<MoeIcenowy>
karlp: but usually core module cannot be directly used by user, right?
<karlp>
depends, I'm just thinking of some of these opi/nanopi devices that _are_ useful by themselves, but are _also_ commonly sold in fixed configurations with extension boards.
<MoeIcenowy>
yes
<MoeIcenowy>
the only example that an addon to a usable board is supported in sunxi world is Lichee Pi Zero dock
<MoeIcenowy>
because it's soldered to the main board
<karlp>
I wsa under the impression that yo uwanted to have a dts for "products" and overlays for "private prototypes that are not readily available, or are reconfigurable at runtime"
<MoeIcenowy>
what do you mean "at runtime"?
<MoeIcenowy>
when board is powered?
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<karlp>
yeah, or for things that are pluggable between boots, and detected, like beagle capes and things
<MoeIcenowy>
so the main problem is that the *Pi Expansion boards are not detectable?
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<ynezz>
MoeIcenowy: it's not a problem, I think, that even detectable beagle capes could be nice support nightmare (if you screwup stacking, eeprom content etc.)
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<Mangy_Dog>
well these SD cards i got off aliexpress are the full 32 and 64gb... The speeds are lacking somewhat though... But that could just be the fact im reading them through my dell monitor card reader
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<KotCzarny>
the only interesting number is 4k random iops
<KotCzarny>
only.
<Mangy_Dog>
nods
<Mangy_Dog>
my speed figure it direct from h2test
<willmore>
SD cards from aliexpress? Oh, boy.
<Mangy_Dog>
not dont the other app but like i mention i dont trust the sd reader on my dell
<Mangy_Dog>
dell monitor
<Mangy_Dog>
it might be usb2......
<Mangy_Dog>
might
<KotCzarny>
use iozone
<Mangy_Dog>
but i do suspect these are legit cards
<Mangy_Dog>
the capacaty is real. the packaging was tbh as good as the original that you buy locally in the uk... just with chinese text rather than english
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<willmore>
I'm only buying A1 rated cards through reputable outlets these days.
<Mangy_Dog>
yeah i admit no idea if this is a1
<willmore>
Even the really cheap ones from NewEgg perform pretty well.
<Mangy_Dog>
its class 10 but thats all i can say
<willmore>
If you're buying it through grey channels, it doesn't matter what they claim it is. :)
<willmore>
I just got a batch of 16GB cards for $3 each from the egg. A1 rated and they test well for performance using CrystalDiskMark64
<Mangy_Dog>
well in fairness i did check the buyer comments... and a lot of people were showing benchmarks of these cards being legit so i took the punt
<KotCzarny>
no, thing is, class10 can be DOG SLOW at small blocks
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<Mangy_Dog>
yeah the cards are totally legit... just compared benchmarks to known store cards i have#
<Mangy_Dog>
they bench out the same so its my reader thats bottlenecking
<KotCzarny>
pastebin the results?
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<Mangy_Dog>
well out of crystel its 20 read and right
<Mangy_Dog>
4 4k clusters
<Mangy_Dog>
not great
<Mangy_Dog>
but other peoples of these cards go about 8 or so for 4k clusters
<Mangy_Dog>
but tbh im comfortable with these being legit
<Mangy_Dog>
IE not fake
<Mangy_Dog>
i just need a properly dedicated sd reader to get those kind of speeds
<KotCzarny>
keep in mind, they might still be of inferior quality
<KotCzarny>
:)
<Mangy_Dog>
b grade?
<Mangy_Dog>
i dunno maybe
<KotCzarny>
or after-hours run
<Mangy_Dog>
maybe
<Mangy_Dog>
but the h2test came back fine
<Mangy_Dog>
so theyre full capacity and no lost bits
<Mangy_Dog>
or dead bits
<Mangy_Dog>
but a 64gb card for 7 quid where if i brought it locally id pay 20 quid
<Mangy_Dog>
im happy with that
<Mangy_Dog>
and tbh it came quick too
<Mangy_Dog>
under 2 weeks
<Mangy_Dog>
more like just over 1 week
<Mangy_Dog>
normally china post is at least 2 weeks
<fALSO>
i wish
<Mangy_Dog>
and one item thats currently well over due is so far 4 weeks since i ordered it
<Mangy_Dog>
some buttons
<Mangy_Dog>
no wait
<Mangy_Dog>
a button is 4 weeks i have some push button rubber domed things that i ordered about 5 weeks ago
<Mangy_Dog>
im ordered some of these silicon domed micro switch buttons. So the usual square microbutton housing but instead of the little round black button its a rubber plunger thing... And ordered some metal dome contact buttons too.... Going to try them both out and then deside what feels better in the game controller
<Mangy_Dog>
fALSO, i wish what?
<fALSO>
2 weeks post from china
<Mangy_Dog>
ohh
<Mangy_Dog>
yeah my average is about 2 weeks
<Mangy_Dog>
but like i said sometimes its a lot longer
<Mangy_Dog>
and sometimes its a week
<Mangy_Dog>
heck i had a 5 day thing once
<Mangy_Dog>
no idea how that happened
<Mangy_Dog>
must have got mixed up with the express stuff
<Mangy_Dog>
:p
<fALSO>
lol
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<Mangy_Dog>
maybe its a logistics thing but i think because of all the land mass between china and the uk. china always airmails here... but to places like america or austrailia it might be boated on regular freight
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<willmore>
Just checked. $9 for 64GB A1 rated cards from Newegg with free shipping. I should have the stats on them on another machine. I'll post these when I can get them here.
<Mangy_Dog>
:o
<willmore>
fALSO, I tend to get stuff any time from 12 days (fastest ever) to 50 days. They generally show up 21-28 days. Depends on where in China they're coming from. I'm lumping all Aliexpress together as 'China' even though some of it has shipped from Singapore or HK, etc.
<Mangy_Dog>
thats actually rather cheap
<Mangy_Dog>
maybe its just british prices that are just really bad
<fALSO>
for me its normally 1 month
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<Mangy_Dog>
wow
<Mangy_Dog>
1 month thats bad
<Mangy_Dog>
funnily i think shenzen stuff turns up quicker than hong kong
<willmore>
There's one provence of China that's really slow. I can't remember the name, but it starts with Y....
<willmore>
Yanwen, IIRC.
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<willmore>
Mangy_Dog, I just checked, the shipment that came super fast was from ShenZhen.
<willmore>
20 NE555P chips. :) I went to build a project and found I was out of them. How can I not have 555's lying around? Now I have 20 and 20 more on the way. :)
<karlp>
yanwen is a shipping company isn't it?
<karlp>
but yeah, it's slow.
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<willmore>
karlp, is that what it is? Okay, the way it was used to describe the service, I assumed it was a geographical region. Thanks for the info.
<karlp>
well, it's how I understood it at least.
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