DDraceNetwork - developer

"\xff\xff\xff\xffgetstatus" not working on ddnet?

what is this? ^^

00:46

you can get status of all teeworlds and ddnet servers from https://master1.ddnet.org/ddnet/15/servers.json

the objective is to connect to a game server using the UDP protocol, identify yourself as a player and collect information from the server, I tested it with other games and got a response, but with ddnet there is no return

Is there a specific command for ddnet?

<ChillerDragon> @fregues if you want to identify yourself as a player to the server you have to speak the protocol and do a full token handshake. Its more than sending one message. But as heinrich already said the publicly listed servers data is served as json.

07:19

<ChillerDragon> @fregues what data exactly do you need?

def-

[ddnet-scripts:master] 1 new commit

3cead81 Add halloween graphics - def-

1

Github contributions are orange now boo

5

MilkeeyCat

Github contributions are orange now boo

I am more scared about how empty my contribution history is boo

imagine someone who can't tell the difference because it is empty

@Robyt3 hello android pro. Have you ever made/have experience with an app with high multi threaded workload?

Jupstar ✪

I am more scared about how empty my contribution history is boo

All my contributions are in filthy for profit private repositories pepeW

Jupstar ✪

@Robyt3 hello android pro. Have you ever made/have experience with an app with high multi threaded workload?

With high workload you mean you want to perform heavy calculations on all CPU cores? I don't really have more experience except the DDNet multi threading, which isn't really doing heavy calculations. According to https://developer.android.com/topic/performance/threads we should lower the thread priority for background jobs so the UI thread can run smoother.

Generally, threads in the foreground group get about 95% of the total execution time from the device, while the background group gets roughly 5%.

Robyt3

With high workload you mean you want to perform heavy calculations on all CPU cores? I don't really have more experience except the DDNet multi threading, which isn't really doing heavy calculations. According to https://developer.android.com/topic/performance/threads we should lower the thread priority for background jobs so the UI thread can run smoother.

Generally, threads in the foreground group get about 95% of the total execution time from the device, while the background group gets roughly 5%.

Yeah, the point is when I tried some stuff with dd-pg on Android I noticed that the main thread got completely blocked if 2 threads consume lot of CPU resource (e.g. during compilation of shaders) I even tested it on different devices. So something limits my workload and available_parallelism is not really reliable.

13:43

I wonder if that is some energy saving mechanism or smth

13:43

I have 8 cores, so at least 4 should be able to be used

yeah, I guess you need to be careful with threads since they inherit the priority from the thread that spawned them

13:43

Practically speaking, there’s a number of variables responsible for this, but picking a value (like 4, for starters), and testing it with Systrace is as solid a strategy as any other. You can use trial-and-error to discover the minimum number of threads you can use without running into problems.

13:43

Each thread costs a minimum of 64k of memory

Robyt3

yeah, I guess you need to be careful with threads since they inherit the priority from the thread that spawned them

Ok I try to lower the priority I use https://github.com/iddm/thread-priority for the main thread

The low prio threads dominate, and for some reason they still block the main thread :c

14:08

I assume the last 4 cores are the performance cores

it doesn't look like they're blocked by CPU usage, the cores aren't at 100%

14:11

is the main thread waiting for something?

heinrich5991

it doesn't look like they're blocked by CPU usage, the cores aren't at 100%

That doesn't matter if that is the energy management. Especially that they aren't at 100% makes no sense

heinrich5991

is the main thread waiting for something?

No

oh, energy management means that the cores could be below 100% and no more CPU time is available?

I guess good energy management means that CPU cores should clock as low as possible