01:01 <Manouchehri> stipa / archetech: serious answer: I was thinking of doing network booting for fun, but with 0.5ms on each file I/O operation... yeaaah

01:38 <Armbian-Discord> <T​onymac32> That won't be how it works out, it isn't 1:1 disk I/I to network I/I 😀

01:38 <Armbian-Discord> <T​onymac32> Erm, I/O

02:16 <Armbian-Discord> <d​ave> oh I know it'll be worse

02:16 <Armbian-Discord> <d​ave> but the starting point of 0.5ms is pretty bad.

03:11 <Armbian-Discord> <h​otnikq> i have reached the maximum number of posts you can make per day just editing my post can somebody release my profile? https://forum.armbian.com/profile/204918-hotnikq/

03:11 <ArmbianHelper> ^ hotnikq - Armbian Community Forums

07:09 <Armbian-Discord> <D​aMiBear> Hello everyone😀 , I am new to armbian. According to the tutorial, I have successfully compiled the ubuntu system image of rock3a. According to my current understanding, compiling linux drivers requires the corresponding linux kernel source code. I went to "build/cache/sources/linux-mainline/linux-5.19.y" and found that this seems to be original kernel. If I want to build my own linux driver, what should I do ?

09:26 <Armbian-Discord> <W​erner> You're correct. These are stock kernel sources which within the building process will be patched against the patch series according to the selected board.

09:29 <Armbian-Discord> <W​erner> I don't know if you want to have them pre-built in or simply build a random driver on your board at runtime but if it is latter simply install the Linux source packages - which you will find in output/debs folder - on your board.

09:43 <Armbian-Discord> <W​erner> t/ec

13:59 <stipa> Manouchehri: you can have such latency if your office is in backyard

15:23 <Manouchehri> stipa: eh, tbh I still feel like it should be lower, it doesn't have to cross that many switches :p

18:39 <stipa> Manouchehri: try to connect your office with wifi, you would be thankful for 0.5 ms of latency via ethernet

18:40 <stipa> i get around 0.3-0.4 ms on half of meter of cable

18:41 <stipa> 2 meters, i lied

18:41 <stipa> but the speed is fine

18:41 <stipa> i mean, amount of data trasnfer per second

19:52 <Armbian-Discord> <d​ave> so to update u-boot, all I need to do is update linux-u-boot-nanopi-r4s-edge, no?

19:55 <Armbian-Discord> <I​gorPec> no

19:56 <Armbian-Discord> <I​gorPec> you need to go to armbian-install and run "update boot loader"

19:58 <Armbian-Discord> <d​ave> hmm, it still looks like it's my older build from Oct 14 2022 that's being booted

21:12 <yang2> stipa: when I was testing I had 2ms from one ISP to another ISP in the city distance of about 3-5 kilometres

21:12 <yang2> not sure how the cabling goes

21:13 <yang2> but it was on the other side of the town, and it went fiber to fiber

21:13 <stipa> only optics can do that

21:13 <Armbian-Discord> <d​ave> alright got serial working

21:14 <yang2> stipa: I think that the connection even went over IX

21:14 <Armbian-Discord> <d​ave> optics have higher latency than DACs on average afaik

21:14 <yang2> so the actual cabling was likely 10 km or so

21:15 <yang2> well if you want a really precise measurement, the "ping" is not good enough

21:15 <yang2> the other side can have hardware delay and so on

21:15 <Armbian-Discord> <d​ave> @yang2: my country did not have a local exchange until about a year ago, so all local traffic between ISPs would go through Miami and back lol.

21:16 <yang2> FL ?

21:16 <Armbian-Discord> <d​ave> yeah, Miami FL

21:16 <Armbian-Discord> <d​ave> I live in Grand Cayman

21:16 <stipa> you guys are taking about stuff as fast as backbones are

21:17 <yang2> dave, that's nice

21:18 <Armbian-Discord> <d​ave> my inter-island latency went from like 50-60ms down to 1-3ms.

21:18 <stipa> but, you can't go faster than light

21:18 <yang2> dave, I am curious how many ISP's do the Cayman islands have?

21:19 <nekomancer[m]> nobody use local traffic in 21st century.

21:19 <nekomancer[m]> only pirates.

21:19 <stipa> brazil does

21:19 <Armbian-Discord> <d​ave> Three. Only one (C&W) has access to the internet though, everyone else has to use them for upstream

21:20 <Armbian-Discord> <d​ave> C&W has two cables, one is their part of MAYA-1 (goes to Miami), and the other goes to Jamaica. They don't seem to ever route traffic properly to Jamaica, I think it's just a failover or something. (Traffic to Jamaica goes to Miami and back stupidly.)

21:21 <yang2> yeah weird, that adds a lot of latency

21:22 <Armbian-Discord> <d​ave> tbh they probably have zero big business customers they care about latency to Jamaica.

21:22 <yang2> Do you have fiber on the islands?

21:22 <stipa> dave, what's the ping to jamaica from you rn

21:23 <Armbian-Discord> <d​ave> yeah, I have three fiber connections in my office building, and one fiber connection at the condo

21:24 <stipa> 1000 km air distance

21:24 <stipa> 2000 km fro a signal to come back

21:25 <yang2> that would be around 10 ms

21:25 <stipa> and there's cuba in the middle

21:25 <Armbian-Discord> <d​ave> stipa: 60ms from Grand Cayman to Jamaica (Netflix co-hosted server test target)

21:25 <stipa> so, could be they're splitting the signal with silicon

21:26 <Armbian-Discord> <d​ave> yeah if I ever have a spare $10 to $30 mil, I want to run a fibre cable from Grand Cayman to Cayman Brac, and Cayman Brac to Trinidad Cuba.

21:27 <Armbian-Discord> <d​ave> and if I have >$100 mil to spend: Grand Cayman to Cancun, Cancun to Freeport (Texas).

21:27 <stipa> i get 30ms just from my modem to a 4G tower

21:29 <stipa> i sense like 10mS of added latency from 100km further

21:30 <stipa> so, 4G adds 30mS + what internet adds

21:31 <yang2> 4G latency probably varies

21:32 <stipa> i dunno, with my setup it's like that

21:32 <stipa> i haven't tried others, next would be 5G or fibre, or both

21:33 <stipa> fibre is promoted heavily around me

21:33 <stipa> they're fighting for the costumers

21:34 <stipa> like, knocking on the doors type of sales

21:35 <stipa> i think even my hometown has fibre now

21:36 <stipa> it's like in the middle of nowhere

21:36 <stipa> there 4G is at max the modem provides, like 60Mbs

21:36 <stipa> at capital it's like 18

21:37 <stipa> probably due everyone having it on phones

21:37 <stipa> for my needs it's ok

21:38 <stipa> i was even fine with 256Kbs ADSL

21:38 <yang2> stipa: some places have to pay a lot of money to get fiber built, so if they offer you for free, grab it :)

21:38 <nekomancer[m]> starlink wants you

21:40 <stipa> yang2: i guess the fibre in my hometown goes over ground, via power columns

21:40 <stipa> via electricity grid columns

21:40 <yang2> ok

21:41 <stipa> not sure

21:41 <stipa> so no digging and stuff

21:41 <yang2> that's still good enough

21:43 <stipa> yeah, should ask around for the ping

21:43 <stipa> i lost contact with everybody

21:54 <stipa> nekomancer[m]: do you have starlink?

21:55 <stipa> "Starlink ping has been measured as low as 20 ms"

21:55 <nekomancer[m]> no

21:57 <stipa> enough for retirement needs

21:57 <nekomancer[m]> more than enough.

23:31 <Armbian-Discord> <N​_uraad> i cant ssh ;-;